2003 Pacific typhoon season#Tropical Depression 22W (Ursula)

On March 5, 2003, meteorologists from the University College London at the Tropical Storm Risk (TSR) Consortium issued an extended range forecast for the typhoon season, noting the likelihood of near average tropical cyclone activity as a result of projected neutral sea surface temperatures. The forecast indicated the potential for 26.2 tropical storms, compared to the 10– and 30-year average of 27.8 and 26.3 storms, respectively.{{cite web|title=Extended Range Forecast for Northwest Pacific Typhoon Activity in 2003|url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastMar2003.pdf|publisher=University College London|access-date=October 17, 2013|location=London, United Kingdom|date=March 5, 2003|author1=Lea, Adam|author2=Saunders, Mark}} The following month, the group raised their forecast for tropical storms to 26.7, indicating a slightly above average season.{{cite web|title=April Forecast Update for Northwest Pacific Typhoon Activity in 2003|url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastApr2003.pdf|publisher=University College London|access-date=October 27, 2013|location=London, United Kingdom|date=April 11, 2003|author1=Lea, Adam|author2=Saunders, Mark}} Over next two months, however, fluctuations in sea surface temperatures, particularly those in the Central Pacific, caused the group to revise their predictions downward and indicated the probability for a slightly below average typhoon season in their June forecast.{{cite web|title=June Forecast Update for Northwest Pacific Typhoon Activity in 2003|url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastJun2003.pdf|publisher=University College London|access-date=October 27, 2013|location=London, United Kingdom|date=June 10, 2003|author1=Lea, Adam|author2=Saunders, Mark}} A rise in sea surface temperatures in the following months prompted the forecasting group to once again raise their forecasts to indicate a near-average season in their final August forecast update, which predicted 27 tropical storms.{{cite web|title=August Forecast Update for Northwest Pacific Typhoon Activity in 2003|url=http://www.tropicalstormrisk.com/docs/TSRNWPForecastAug2003.pdf|publisher=University College London|access-date=October 27, 2013|location=London, United Kingdom|date=August 5, 2003|author1=Lea, Adam|author2=Saunders, Mark}} The group was very accurate in their forecasts, with their April and August forecasts being the most accurate.{{cite web|title=Summary of 2003 NW Pacific Typhoon Season and Verification of Authors' Seasonal Forecasts|url=http://www.tropicalstormrisk.com/docs/TSRNWP2003Verification.pdf|publisher=University College London|access-date=October 27, 2013|location=London, United Kingdom|date=January 12, 2004|author1=Lea, Adam|author2=Saunders, Mark}}

Similarly, meteorologists working with the City University of Hong Kong issued a seasonal projection on April 24, 2003, indicating the likelihood of a normal or below normal season with 29 total tropical cyclones, 26 tropical storms, and 16 typhoons. As with the TSR, the group primarily based their forecast numbers on the prevailing status of the El Niño-Southern Oscillation.{{cite web|title=2003 Prediction of Seasonal Tropical Cyclone Activity over the Western North Pacific and the South China Sea, and the Number of Landfalling Tropical Cyclones over South China|url=http://weather.cityu.edu.hk/tc_forecast/2003_forecast_APR.htm|publisher=City University of Hong Kong's School of Energy and Environment|access-date=October 27, 2013|author=Laboratory for Atmospheric Research|location=Hong Kong, Hong Kong|date=April 24, 2003}} The City University of Hong Kong revised their forecasts on June 24, 2003, indicating a slight increase of total tropical cyclones to 30.{{cite web|title=Updated Prediction of Seasonal Tropical Cyclone Activity over the Western North Pacific and the South China Sea, and the Number of Landfalling Tropical Cyclones over South China|url=http://weather.cityu.edu.hk/tc_forecast/2003_forecast_JUN.htm|publisher=City University of Hong Kong's School of Energy and Environment|access-date=October 27, 2013|author=Laboratory for Atmospheric Research|location=Hong Kong, Hong Kong|date=June 24, 2003}} The group was also accurate in their forecasts for the entirety of the Northwest Pacific, though their specialized forecasts for the South China Sea were substantially off.{{cite web|title=Verification of Forecasts of Tropical Cyclone Activity over the Western North Pacific in 2003|url=http://weather.cityu.edu.hk/tc_forecast/2003_Verification.htm|publisher=City University of Hong Kong's School of Energy and Environment|access-date=October 27, 2013|author=Laboratory for Atmospheric Research|location=Hong Kong, Hong Kong|date=January 30, 2004}}

During the year, the Japan Meteorological Agency (JMA) issued advisories on tropical cyclones west of the International Date Line to the Malay Peninsula, and north of the equator; this was due to the agency's status as the official Regional Specialized Meteorological Center, as designated by the World Meteorological Organization in 1989. The JMA issued forecasts and analyses four times a day, beginning at 0000 UTC and continuing every six hours. The JMA issued forecasts based on a climatological tropical cyclone forecast model. The agency estimated 10 minute sustained winds and barometric pressure based on the Dvorak technique and numerical weather prediction. The JTWC also issued warnings on storms within the basin, operating from Pearl Harbor in Hawaii to represent the interests of the United States Armed Forces in the Indian and Pacific Oceans.

File:Ketsana and Parma 24 oct 2003 0350Z.jpg

The Accumulated Cyclone Energy (ACE) index for the 2003 Pacific typhoon season as calculated by Colorado State University using data from the Joint Typhoon Warning Center was 337.4 units.{{cite web| title=Basin Archives: Northwest Pacific Ocean Historical Tropical Cyclone Statistics|url=http://tropical.atmos.colostate.edu/Realtime/index.php?arch&loc=northwestpacific|publisher=Colorado State University|location=Fort Collins, Colorado|access-date=25 May 2023}}

Throughout the season, sea surface temperatures within the western equatorial Pacific were above normal, including those in the South China Sea. Areas of convection persisted year-round in the lower latitudes, particularly around the Philippines. Atmospheric divergence was also prevalent in the same regions, resulting in enhanced tropical cyclogenesis east of the Philippines in 2003; the mean region of development of tropical systems during the year was more southwest than the 1971–2000 30-year average. In 2003, the JMA monitored 21 tropical cyclones of at least tropical storm intensity; of those, 14 reached typhoon intensity. Though the number of tropical storms was below average, the ratio between tropical storms and typhoons was 66% greater than normal. The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) monitored three additional cyclones of at least tropical storm intensity that were not monitored by the JMA.{{cite web|title=Monthly Global Tropical Cyclone Summary August 2003|url=http://australiasevereweather.com/cyclones/2004/summ0308.htm|work=Summaries and Track Data|publisher=Australiansevereweather.com|access-date=October 27, 2013|author=Padgett, Gary|author2=Boyle, Kevin|author3=Chunliang, Huang |date=August 2003}}

The season began with the formation of Tropical Storm Yanyan on January 15. After its dissipation five days later, no tropical cyclones of at least tropical storm intensity developed over the next two months. This period of inactivity ended with the formation of Typhoon Kujira in mid-April; Kujira was one of the longest lived Pacific storms on record and was the first typhoon with 1-minute sustained winds of at least {{convert|240|km/h|mph|abbr=on}} in April since Typhoon Isa in 1997. Tropical activity was enhanced from May to June, and during this period the JMA monitored four tropical storms, while the PAGASA monitored a fifth storm off the eastern Philippines. Three of the four tropical storms monitored by the JMA approached or hit Japan, including Typhoon Soudelor, which brought heavy rainfall and wind across the Ryukyu Islands and the Korean Peninsula.

Tropical activity once again declined towards the second half of June and first half of July. The second half of July, however, featured the development of typhoons Imbudo and Koni, which both tracked westward across the Philippines before striking areas near Saipan and other regions of southeastern China. Imbudo caused the deaths of 78 people and US$383 million in damage.{{#tag:ref|All monetary totals are in their respective 2003 values, and were converted to United States dollars via the Oanda Corporation website.{{cite web|publisher=Oanda Corporation|year=2013|title=Historical Exchange Rates|access-date=October 5, 2013|url=http://www.oanda.com/currency/converter/}}|group=nb}} August was a highly active month for tropical cyclogenesis, with a total of six tropical storms monitored by the JMA, JTWC, and PAGASA. This included typhoons Krovanh and Dujuan, which also struck southeastern China. Typhoon Etau earlier in the month made landfall in Japan, resulting in 17 deaths.{{Cite web |url=http://lwf.ncdc.noaa.gov/oa/climate/research/2003/aug/hazards.html |title=NCDC: Climate of 2003: Global hazards and significant events |access-date=September 23, 2006 |archive-url=https://web.archive.org/web/20061001055020/http://lwf.ncdc.noaa.gov/oa/climate/research/2003/aug/hazards.html |archive-date=October 1, 2006 |url-status=dead }}

Activity was somewhat below average in September, with only one tropical cyclone making landfall, Maemi.{{cite web|title=Monthly Global Tropical Cyclone Summary September 2003|url=http://australiasevereweather.com/cyclones/2004/summ0309.htm|work=Summaries and Track Data|publisher=Australiansevereweather.com|access-date=October 27, 2013|author=Padgett, Gary|author2=Boyle, Kevin|author3=Chunliang, Huang|date=September 2003}} However, Maemi was the strongest tropical cyclone of the season and was the costliest with roughly US$4.8 billion in damage, mostly in South Korea. Tropical cyclogenesis and activity continued to decline after August, with October featuring only three tropical storms. However, two, Ketsana and Parma, reached typhoon intensity; both stayed away from land.{{cite web|title=Monthly Global Tropical Cyclone Summary October 2003|url=http://australiasevereweather.com/cyclones/2004/summ0310.htm|work=Summaries and Track Data|publisher=Australiansevereweather.com|access-date=October 27, 2013|author=Padgett, Gary|author2=Boyle, Kevin|author3=Chunliang, Huang|date=October 2003}} November featured less storms but was climatologically average, with two typhoons developing.{{cite web|title=Monthly Global Tropical Cyclone Summary November 2003|url=http://australiasevereweather.com/cyclones/2004/summ0311.htm|work=Summaries and Track Data|publisher=Australiansevereweather.com|access-date=October 27, 2013|author=Padgett, Gary|author2=Boyle, Kevin|author3=Chunliang, Huang |date=November 2003}} The second typhoon, Lupit, devastated portions of Yap State, resulting in approximately $1.7 million in damage.{{citation |pages=242–243 |title=Storm Data and Unusual Weather Phenomena with Late Reports and Corrections |date=April 2004 |volume=24 |number=4 |publisher=National Oceanic and Atmospheric Administration |access-date=January 27, 2013 |url=http://www1.ncdc.noaa.gov/pub/orders/IPS-0FF500DC-E840-48A1-89B5-CB059E6A6E53.pdf |archive-date=January 29, 2013 |archive-url=https://www.webcitation.org/6E1SWQKZD?url=http://www1.ncdc.noaa.gov/pub/orders/IPS-0FF500DC-E840-48A1-89B5-CB059E6A6E53.pdf |url-status=dead }} In December, the JTWC and PAGASA monitored a sole tropical system east of the Philippines, though the JMA did not monitor or classify any tropical cyclones during the month.{{cite web|author=Kevin Boyle|publisher=Gary Padgett|title=Monthly Global Tropical Cyclone Summary December 2003|access-date=July 6, 2014|url=http://australiasevereweather.com/cyclones/2004/summ0312.htm}}

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{{Infobox Hurricane Small

| Basin = WPac

| Image = Yanyan 2003-01-18 0345Z.jpg

| Track = Yanyan 2003 track.png

| Formed = January 15

| Dissipated = January 20

| 10-min winds = 35

| 1-min winds = 50

| Pressure = 1000

}}

On January 11, the JTWC began monitoring the disturbance that would eventually develop into Yanyan near the International Date Line. As the system tracked westward, it gradually moved into a more favorable environment for tropical cyclogenesis. On January 14, surface observations indicated that the low-pressure area had developed a closed, low-level circulation center indicative of a tropical cyclone, satellite imagery remained inconclusive.{{cite web|title=Monthly Global Tropical Cyclone Summary January 2003|url=http://australiasevereweather.com/cyclones/2003/summ0301.htm|work=Summaries and Track Data|publisher=Australiansevereweather.com|access-date=October 6, 2013|author=Boyle, Kevin |date=January 2003}} Nonetheless, the JMA classified the pressure area as a tropical depression west of the Marshall Islands at 0600 UTC on January 15. The JTWC would follow suit by classifying the storm as such at 1800 UTC later that day. At the time, the depression was tracking west-northwest under the influence of a subtropical ridge to the north. Over the next day the system waned in convective activity before resuming its previous track and accelerating. At 0000 UTC on January 17, the JTWC upgraded the system to tropical storm intensity, though the storm remained nameless as the JMA continued to classify it as a tropical depression.

Throughout January 17 the tropical storm would again oscillate in strength, resulting in a brief downgrade by the JTWC to tropical depression intensity. However, an increase in deep convection resulted in its reclassification as a tropical storm at 1800 UTC that day, followed by the JMA upgrading the system to tropical storm intensity at 1200 UTC on January 18. As such, the storm received the name Yanyan. At roughly the same time, the tropical cyclone began to stall east of the Mariana Islands and curve sharply northeastward. Whilst the JTWC indicated that Yanyan peaked in strength late on January 18 with 1-minute sustained winds of {{convert|60|km/h|mph|abbr=on}}, the JMA considered the system to have maintained the same intensity throughout its stint as a tropical storm. Steered by the same nearby subtropical ridge, Yanyan would continue to track towards the northeast into a less favorable tropical cyclone environment. The JMA downgraded Yanyan to tropical depression at 1200 UTC on January 20 before the storm transitioned into an extratropical cyclone as its low-level circulation center decoupled from the primary mass of convection due to strong wind shear. At 0000 UTC, both the JTWC and JMA discontinued the monitoring of Yanyan.

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{{Infobox Hurricane Small

| Basin = WPac

| Image = Super Typhoon Kujira 2003.jpg

| Track = Kujira 2003 track.png

| Formed = April 9

| Dissipated = April 25

| 10-min winds = 90

| 1-min winds = 135

| Pressure = 930

}}

{{main article|Typhoon Kujira (2003)}}

Kujira developed from a broad area of disturbed weather as a tropical depression on April 9 well removed from any landmasses. Shortly after development, Kujira quickly intensified in its early stages, and was upgraded to a tropical storm just two days after cyclogenesis. Strengthening slowed afterwards, though the storm attained typhoon intensity on April 14. Intensification continued and late on April 15, Kujira reached its peak intensity with winds of {{convert|165|km/h|mph|abbr=on}} and a minimum barometric pressure of 930 mbar (hPa; 27.46 inHg). Following peak intensity, Kujira would begin to track northwest and oscillate in strength, cresting an additional two times in intensity. On April 21, the typhoon was downgraded to tropical storm intensity and began to track erratically for several days east of Taiwan. However, on April 24, Kujira would resume a northward track and begin to weaken, and on April 24 was downgraded to tropical depression strength as it made landfall on Kyushu. Following landfall, Kujira transitioned into an extratropical cyclone on April 25, which persisted until crossing the International Dateline towards the end of April 2003.

Shortly after developing, Kujira caused two fatalities in Pohnpei in addition to minor agricultural and infrastructural damage;{{cite web|title=Monthly Global Tropical Cyclone Summary April 2003|url=http://australiasevereweather.com/cyclones/2003/summ0304.htm|work=Summaries and Track Data|publisher=Australiansevereweather.com|access-date=October 6, 2013|author=Padgett, Gary|author2=Boyle, Kevin|author3=Chunliang, Huang |date=April 2003}} similar effects were felt in Guam.{{cite news|title=Earthweek: A diary of the planet|newspaper=The Vancouver Sun|date=April 19, 2003|author=Newman, Steve|agency=Tribune Media Services|location=Vancouver, British Columbia|page=F2}}b Several days later, the typhoon prompted cyclone warnings and other precautionary measures in the Philippines after forecasts indicated the potential for strong winds and rain.{{cite news|title=Typhoon Veers, Threatens Bicol Region|url=http://www.newsflash.org/2003/04/hl/hl017814.htm|access-date=October 6, 2013|date=April 18, 2003|author=Vanzi, Sol Jose|agency=Philippine Headline News Online|location=Quezon City, Philippines|archive-date=March 4, 2016|archive-url=https://web.archive.org/web/20160304003136/http://www.newsflash.org/2003/04/hl/hl017814.htm|url-status=dead}}{{cite news|title=Typhoon weakens, mild quake hits MM|url=https://news.google.com/newspapers?id=ZysaAAAAIBAJ&sjid=oAsEAAAAIBAJ&pg=5564,1813184&dq=kujira&hl=en|access-date=October 6, 2013|newspaper=Manila Standard|date=April 23, 2003|author=Araja, Rio|agency=Associated Press|location=Manila, Philippines}} However, ultimately any effects in the archipelago associated with Kujira remained minimal.{{cite news|title=Weakened Kujira spares the Philippines, heads for Taiwan|date=April 22, 2003|agency=Agence France Presse|location=Manila, Philippines}}{{subscription required|via=Lexis Nexis}} The typhoon also prompted warning products in Taiwan,{{cite news|title=ROUNUP: Taiwan issues warnings for typhoon Kujira|date=April 21, 2003|agency=Deutsche Presse-Agentur|location=Taipei, Taiwan}}{{subscription required|via=Lexis Nexis}} making it the first April typhoon since 1978 to cause such a feat. Unlike in the Philippines, however, Kujira would bring significant rainfall to Taiwan.{{cite news|title=Earthweek: A diary of the planet|newspaper=The Vancouver Sun|date=April 26, 2003|author=Newman, Steve|agency=Tribune Media Services|location=Vancouver, British Columbia|page=G7}}{{subscription required|via=Lexis Nexis}} Effects from the typhoon were most significant in Japan,{{cite web|title=Typhoon 200302 (KUJIRA)|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200302&basin=wnp&lang=en|publisher=National Institute of Informatics|access-date=October 6, 2013|author=KITAMOTO Asanobu}} particularly in the Ryukyu Islands. Strong winds, rain, and waves caused US$230,000 (¥27.8 million) in agricultural damage on Ishigaki Island. One person was killed due to injuries resulting from the waves.{{cite web|title=Digital Typhoon: Weather Disaster Report (2003-918-15)|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-918-15&lang=en|work=Digital Typhoon Weather Disaster Database|publisher=National Institute of Informatics|access-date=October 6, 2013|author=KITAMOTO Asanobu|language=ja}} In Kyushu, heavy rainfall, peaking at {{convert|196|mm|in|abbr=on}} in Ōita Prefecture, was reported. Overall, despite its distance away from land and weak intensity at the time of its sole landfall, Kujira resulted in three fatalities.

{{Infobox Hurricane Small

| Basin = WPac

| Image = Batibot 2003-05-18 1650Z.jpg

| Track = Batibot 2003 track.png

| Formed = May 16

| Dissipated = May 21

| 10-min winds = 30

| 1-min winds = 30

| Pressure = 1002

}}

An area of convection formed on May 16 to the southwest of Palau, located within an area of weak wind shear. The next day, the JMA and the JTWC both classified the system as a tropical depression. The convection was disorganized in association with multiple circulation centers, although it gradually organized. Moving westward initially, the depression turned more to the north into an area of increasing wind shear. On May 19, the JTWC upgraded the system to Tropical Storm 03W, and on the same day, PAGASA classified it as Tropical Depression Batibot.{{cite web|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|title=Tropical Depression "Batibot" (19 to 20 May 2003)|access-date=October 5, 2013|url=http://kidlat.pagasa.dost.gov.ph/cab/track302.htm|archive-url=https://web.archive.org/web/20131109021806/http://kidlat.pagasa.dost.gov.ph/cab/track302.htm|archive-date=November 9, 2013}} Soon after, the convection decreased from the center, and by May 20, all warning agencies had discontinued advisories.

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{{Infobox Hurricane Small

| Basin = WPac

| Image = Typhoon Chan-Hom 2003.jpg

| Track = Chan-Hom 2003 track.png

| Formed = May 19

| Dissipated = May 27

| 10-min winds = 85

| 1-min winds = 115

| Pressure = 940

}}

Midday on May 18, the JTWC began to monitor an area of persistent disturbed weather associated with a broad low-pressure area southwest of Chuuk. Within highly conductive conditions, the disturbance quickly organized and became classified as a tropical depression at 0000 UTC the following day. In its initial stages, the depression tracked slowly northeastwards. However, a shortwave trough forced a weakness in a nearby ridge, allowing for the storm to take a more streamlined, northward path. At 1200 UTC on May 20, the JMA upgraded the depression to Tropical Storm Chan-hom. Following the system's naming, Chan-hom temporarily meandered towards the northwest before resuming its northeasterly track. The next day, the storm began to develop an eye; this was reflected with an upgrade by the JMA to typhoon status at 0600 UTC on May 23. Gradual intensification followed, and at 1800 UTC that day Chan-hom reached its peak intensity with maximum sustained winds of {{convert|155|km/h|mph|abbr=on}} and a minimum pressure of {{convert|940|mbar|hPa inHg}}.

Following peak intensity, Chan-hom began to intake dry air beginning on May 25. At roughly the same time, the typhoon began to weaken and accelerate towards the northeast. Conditions continued to worsen as the storm moved further north, and as the cyclone passed east of Minamitorishima, it was downgraded to tropical storm classification. By this time, Chan-hom had lost much of its convection due to wind shear. Early on May 27, Chan-hom had fully transitioned into an extratropical cyclone, and these remnants continued to track towards the northeast. These extratropical remnants dissipated south of the Aleutian Islands the following day. Early in the typhoon's existence, Chan-hom posed a potential threat to Guam, but remained well east of the island. However, after passing to the northeast, winds from the typhoon fanned volcanic ash from the recently erupting Anatahan volcano towards the island, prompting precautionary measures in Guam. Ashfalls were reported on the island, forcing the cancellation of several flights.{{cite web|title=Storm Event Report for Volcanic Ash in Saipan|url=http://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5355684|publisher=National Oceanic and Atmospheric Administration|access-date=October 19, 2013|author=National Climatic Data Center|location=Saipan, Guam|date=May 23, 2003}} As a tropical storm, Chan-hom caused some damage to homes and crops on Chuuk, mostly due to heavy rains brought forth by the storm. Offshore, a 1,040 ton fishing vessel, the Nien Feioch, sank during the storm. The ship was valued at $16 million.

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{{main article|Tropical Storm Linfa (2003)}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Linfa 2003-05-30 0155Z.jpg

| Track = Linfa 2003 track.png

| Formed = May 25

| Dissipated = May 30

| 10-min winds = 55

| 1-min winds = 60

| Pressure = 980

}}

Tropical Storm Linfa developed as a tropical depression just off the western coast of Luzon on May 25. The disturbance quickly intensified to reach tropical storm intensity a few hours after cyclogenesis. However, intensification leveled off as Linfa executed a small clockwise loop before a subsequent landfall on Luzon on May 27. Due to land interaction the storm temporarily weakened and decoupled before reforming in the Philippine Sea. Afterwards Linfa began reintensifying and reached its peak intensity on May 29 with maximum sustained winds of {{convert|100|km/h|mph|abbr=on}} and a barometric pressure of 980 mbar (hPa; 28.94 inHg). Following its peak the tropical storm began to deteriorate and transitioned into an extratropical cyclone on May 30; these extratropical remnants continued to track northward through Japan before dissipating in the Sea of Okhotsk on June 4.

The erratic and slow movement of Linfa off the western Philippines was the catalyst for extreme rainfall and flooding, killing 41 persons in the archipelago. Precipitation peaked at {{convert|723|mm|in|abbr=on}} near Dagupan. Rising floodwaters resulted in the temporary shutdown of government offices and numerous mudslides.{{cite news|title=Tropical storm Linfa hits northern Philippines, killing three|newspaper=Channel NewsAsia|date=May 27, 2003|agency=Singapore Pte Ltd.}}{{subscription required|via=Lexis Nexis}}{{cite web|title=Northern Philippines - Heavy rains from Tropical Storm Linfa - Flooding and mudslides|url=http://www.dartmouth.edu/~floods/images/2003121sum.htm|publisher=Dartmouth Flood Observatory|access-date=October 11, 2013|author=Dartmouth College|location=Hanover, New Hampshire|archive-date=October 12, 2013|archive-url=https://web.archive.org/web/20131012015844/http://www.dartmouth.edu/~floods/images/2003121sum.htm|url-status=dead}} In addition, strong winds caused widespread power outages. Overall damage from Linfa in the Philippines amounted to ₱192.3 million (US$3.65 million). The floods also displaced 8,367 people in 1,686 families and destroyed 178 homes.{{cite news|title=ROUNDUP: Death toll in tropical storm in Philippines rises to 15|date=May 27, 2003|agency=Deutsche Presse-Agentur|location=Manila, Philippines}}{{subscription required|via=Lexis Nexis}}{{cite news|title=State of calamity declared in northern Philippines|date=May 29, 2013|agency=Xinhua News Agency|location=Manila, Philippines}}{{subscription required|via=Lexis Nexis}} Linfa and its extratropical remnants later brought torrential rainfall and widespread flooding to Japan, particularly in southwestern regions. Rainfall there peaked at {{convert|727|mm|in|abbr=on}}.{{cite web|title=Digital Typhoon: Typhoon 200304 (LINFA) - Disaster Information

|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200304&basin=wnp&lang=en|work=Digital Typhoon Weather Disaster Database|publisher=National Institute of Informatics|access-date=October 25, 2013|author=KITAMOTO Asanobu|language=ja}} Flood damage was worst in Kōchi and Tokushima Prefectures, where several buildings were destroyed by floodwater.{{cite web|title=Digital Typhoon: Weather Disaster Report (2003-893-04)|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-893-04&lang=en|work=Digital Typhoon Weather Disaster Database|publisher=National Institute of Informatics|access-date=October 25, 2013|author=KITAMOTO Asanobu|language=ja}}{{cite web|title=Digital Typhoon: Weather Disaster Report (2003-895-06)|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-895-06&lang=en|work=Digital Typhoon Weather Disaster Database|publisher=National Institute of Informatics|access-date=October 25, 2013|author=KITAMOTO Asanobu|language=ja}} Other locations in Japan experienced considerable agricultural damage as well as numerous landslides.{{cite web|title=Digital Typhoon: Weather Disaster Report (2003-651-03)|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-651-03&lang=en|work=Digital Typhoon Weather Disaster Database|publisher=National Institute of Informatics|access-date=October 25, 2013|author=KITAMOTO Asanobu|language=ja}} Overall, Linfa caused roughly $28.2 million in damage, much of which occurred in Japan, though the entirety of deaths associated with the cyclone took place in the Philippines.

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{{Infobox Hurricane Small

| Basin = WPac

| Image = Tropical Storm Nangka 2003.jpg

| Track = Nangka 2003 track.png

| Formed = May 30

| Dissipated = June 3

| 10-min winds = 50

| 1-min winds = 40

| Pressure = 985

}}

In late May, an area of disturbed weather began to persist in the South China Sea. The JTWC began to monitor the storm cluster on May 29. The following day, the JMA reclassified the system as a tropical depression; initially the system remained highly disorganized due to the lack of deep convection. Persistent moderate wind shear and dry air prevented the cyclone from strengthening significantly in the storm's early stages. These conditions abated as the depression tracked northeast, and at 0000 UTC on June 1, the JMA upgraded the system to Tropical Storm Nangka. Throughout the course of the day, Nangka continued to strengthen as it accelerated northeast, and peaked in strength with a barometric pressure of {{convert|985|mbar|hPa inHg|abbr=on}} and maximum sustained winds of {{convert|95|km/h|mph|abbr=on}}, making it a severe tropical storm.

However, upon moving through the Bashi Channel, conditions began to deteriorate due to increased wind shear, weakening the system and resulting in its downgrade to tropical depression status by the JMA at 1200 UTC on June 3. Nangka continued to become increasingly disorganized as it moved further north, and late that day, the depression transitioned to an extratropical cyclone. The resulting remnants continued to track well east of Japan before dissipating on June 7. Due to its track away from landmasses, damage remained minimal; however, as Nangka passed to the south and east of Japan, the storm brought light rainfall to the country, peaking at {{convert|81|mm|in|abbr=on}} in Minamidaitō, Okinawa.{{cite web|title=Digital Typhoon: Typhoon 200305 (NANGKA) - Disaster Information|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200305&basin=wnp&lang=en|work=Digital Typhoon Weather Disaster Database|publisher=National Institute of Informatics|access-date=October 26, 2013|author=KITAMOTO Asanobu|language=ja}}

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{{Main article|Typhoon Soudelor (2003)}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Soudelor 2003-06-18 0225Z.jpg

| Track = Soudelor 2003 track.png

| Formed = June 12

| Dissipated = June 19

| 10-min winds = 80

| 1-min winds = 115

| Pressure = 955

}}

A tropical disturbance persisted in the monsoon trough northwest of Pohnpei on June 7, and moved westward without development due to wind shear.{{cite web|author=Kevin Boyle|publisher=Gary Padgett|title=Monthly Global Tropical Cyclone Summary June 2003|access-date=January 29, 2013|url=http://australiasevereweather.com/cyclones/2003/summ0306.htm}} On June 11, the shear decreased enough to allow the convection to organize, and the next day the JMA classified it as a tropical depression northeast of Palau. On June 13, the JMA upgraded it to Tropical Storm Soudelor to the east of the Philippines, and PAGASA gave it the local name "Egay".{{cite web|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |title=Typhoon "Egay" (13 to 18 June 2003) |access-date=January 30, 2013 |url=http://kidlat.pagasa.dost.gov.ph/cab/track305.htm |archive-url=https://archive.today/20130416141100/http://kidlat.pagasa.dost.gov.ph/cab/track305.htm |url-status=dead |archive-date=April 16, 2013 }} Soudelor moved to the northwest and later to the north, parallel to the eastern Philippines, and on June 17, the JMA upgraded it to typhoon status. The storm rapidly intensified to the east of Taiwan as it developed a well-defined eye, and while doing so passed over the Japanese island of Iriomote-jima at around 2030 UTC on June 17. At 0600 UTC on June 18, the JTWC estimated peak 1 minute winds of {{convert|215|km/h|mph|abbr=on}}, while the JMA estimated peak 10 minute winds of {{convert|150|km/h|mph|abbr=on}}. Increased shear weakened the typhoon to tropical storm strengthen on June 19, and later that day the JMA declared the storm as extratropical near the Oki Islands. The extratropical remnants of Soudelor continued to the northeast, crossing northern Japan on June 20 and dissipating on June 24.

While offshore the Philippines, Soudelor dropped heavy rainfall that caused flooding and left thousands homeless. The storm caused ₱131 million (PHP, US$2.46 million) in damage and 12 deaths.{{cite web|publisher=National Disaster Coordinating Council|year=2003|access-date=February 1, 2013|title=Aftermath report for the Philippines|url=http://baseportal.com/cgi-bin/baseportal.pl?htx=/miso/typhoons&cmd=list&range=220,20&cmd=all&Id=220}} On the Japanese island of Iriomote-jima, where wind gusts reached {{convert|204|km/h|mph|abbr=on}}. It also affected Taiwan, where floods covered highways and caused mudslides.{{cite news|author= Chiu Yu-tzu|newspaper=Taipei Times|date=June 19, 2003|access-date=February 1, 2013|title=Typhoon's rains cause landslides|url=http://www.taipeitimes.com/News/taiwan/archives/2003/06/19/2003055834}} In Japan, the storm caused widespread power outages, although damage was minimal, and there were 21 injuries.{{cite news|agency=Associated Press|newspaper=USA Today|date=June 20, 2003|access-date=February 1, 2013|title=Powerful storm injures 21 in Japan|url=https://www.usatoday.com/weather/news/2003-06-20-japan-storm_x.htm}} In South Korea, there was $12.1 million in damage and two deaths.{{cite web|publisher=Ministry of Land, Transport and Maritime Affairs |date=September 27, 2008 |access-date=February 2, 2013 |title=Water Resources of Korea |url=http://portal.worldwaterforum5.org/wwf5/en-us/worldregions/Asia-Pacific/Northeast%20Asia%20Sub-Region/Consultation%20Library/27Sep08_Northeast%20Mt_Korea.pdf |url-status=dead |archive-url=https://web.archive.org/web/20120213225749/http://portal.worldwaterforum5.org/wwf5/en-us/worldregions/Asia-Pacific/Northeast%20Asia%20Sub-Region/Consultation%20Library/27Sep08_Northeast%20Mt_Korea.pdf |archive-date=February 13, 2012 }}

{{clear}}

{{Infobox tropical cyclone small

| Basin = WPac

| Image = Falcon 2003-07-09 0545Z.jpg

| Track = Falcon 2003 track.png

| Formed = July 9

| Dissipated = July 10

| 10-min winds = 30

| Pressure = 1004

}}

On July 9, PAGASA classified a system as Tropical Depression Falcon, off the west coast of the Philippines. The JMA also briefly initiated advisories before dropping them later on July 10.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Super Typhoon Imbudo 2003.jpg

| Track = Imbudo 2003 track.png

| Formed = July 15

| Dissipated = July 25

| 10-min winds = 90

| 1-min winds = 130

| Pressure = 935

}}

{{Main article|Typhoon Imbudo}}

On July 15, the JMA estimated that a tropical depression formed, and the next day the JTWC initiated advisories on Tropical Depression 09W about {{convert|665|km|mi|abbr=on}} east of Yap. A subtropical ridge near Okinawa steered the nascent depression to the west-northwest for much of its duration. With warm waters and favorable upper-level conditions, the depression quickly organized, first to Tropical Storm Imbudo on July 17, and to typhoon status two days later, when PAGASA begin issuing advisories on Typhoon Harurot.{{cite web|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|title=Super Typhoon "Harurot" (19 to 23 July 2003)|access-date=October 5, 2013|url=http://kidlat.pagasa.dost.gov.ph/cab/track308.htm|archive-url=https://web.archive.org/web/20131014133604/http://kidlat.pagasa.dost.gov.ph/cab/track308.htm|archive-date=October 14, 2013 }} Around that time, Imbudo was rapidly intensifying, developing a well-defined eye. At 1200 UTC on July 20, the JMA estimated peak 10 minute sustained winds of {{convert|165|km/h|mph|abbr=on}}, and the same time, the JTWC estimated 1 minute sustained winds of {{convert|240|km/h|mph|abbr=on}}, making it a super typhoon. Imbudo maintained peak winds for about 12 hours, before undergoing an eyewall replacement cycle. At 0300 UTC on July 22, Imbudo struck northern Luzon, with 1 minute winds estimated at {{convert|205|km/h|mph|abbr=on}} by the JTWC. It weakened over land, but re-intensified in the South China Sea, striking southern China near Yangjiang, Guangdong on July 24.{{cite web|publisher=Hong Kong Observatory|title=Typhoon Imbudo (0307) : 17-25 July 2003|access-date=October 6, 2013|url=http://www.weather.gov.hk/publica/tc/tc2003/pdf/section3_2.pdf|date=|archive-date=October 15, 2013|archive-url=https://web.archive.org/web/20131015014703/http://www.weather.gov.hk/publica/tc/tc2003/pdf/section3_2.pdf|url-status=dead}} Imbudo rapidly weakened, dissipating on July 25.

In the Philippines, officials evacuated over 14,000 people. Imbudo was the strongest typhoon to strike since Typhoon Zeb five years prior, The typhoon left widespread areas flooded for several days.{{cite news|newspaper=The Philippine Star|title=Harurot Exits, Leaves 21 Dead|access-date=October 8, 2013|date=July 24, 2003|url=http://www.newsflash.org/2003/05/hl/hl018458.htm|archive-url=https://web.archive.org/web/20030818080108/http://www.newsflash.org/2003/05/hl/hl018458.htm|url-status=dead|archive-date=August 18, 2003}} Damage was heaviest in the Cagayan Valley, where over 80,000 people were displaced by the storm.{{cite web|publisher=World Bank Institute|title=Assessing the Socio-Economic Impacts of Typhoon "Haruruot", Cagayan Valley, July 2003. UNESCAP-NDCC Project|year=2005|access-date=October 10, 2013|url=http://worldbank.mrooms.net/file.php/466/2524/NDCC-Damage-reading-final.pdf|archive-url=https://web.archive.org/web/20131014103632/http://worldbank.mrooms.net/file.php/466/2524/NDCC-Damage-reading-final.pdf|archive-date=October 14, 2013|url-status=dead}} In Isabela, high winds wrecked most of the banana crop and severely damaged other crops.{{cite journal|author=Marco G.A. Huigen|author2=Isabella C. Jens|year=2006|title=Socio-Economic Impact of Super Typhoon Harurot in San Mariano, Isabela, the Philippines|journal=World Development|access-date=October 8, 2013|url=http://cbr.tulane.edu/PDFs/huigenjens2006.pdf|doi=10.1016/j.worlddev.2006.03.006|volume=34|issue=12|pages=2116–2136|archive-date=October 14, 2013|archive-url=https://web.archive.org/web/20131014115848/http://cbr.tulane.edu/PDFs/huigenjens2006.pdf|url-status=dead}} Throughout the Philippines, Imbudo damaged or destroyed 62,314 houses, causing P4.7 billion (2003 PHP, $86 million 2003 USD) in damage. There were 64 deaths in the country. In southern China in Yangjiang, more than 30,000 people evacuated ahead of the storm,{{cite news|author=Chow Chung-yan|author2=Cathy Li|agency=South China Morning Post|date=July 25, 2003|title=30,000 evacuated as typhoon destroys 4,500 homes in Yangjiang}}{{subscription required|via=Lexis Nexis}} and more than half of the trees in the city fell due to strong winds.{{cite news|author=Stephanie Hoo|date=July 25, 2003|title=Seven deaths reported from Typhoon Imbudo in southern China, thousands of homes wrecked|agency=Associated Press}}{{subscription required|via=Lexis Nexis}} High winds killed a man in Hong Kong after knocking him off a platform. Throughout Guangdong, Imbudo destroyed 595,000 houses and caused eight deaths. Heavy rains spread across southern China, peaking at {{convert|343|mm|in|abbr=on}} at Hepu County in Guangxi province. There, 12 people died from the storm. Overall damage in China was about ¥4.45 billion (CNY, $297 million USD).

{{clear}}

{{main article|Tropical Storm Koni}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Koni 2003-07-20 0530Z.jpg

| Track = Koni 2003 track.png

| Formed = July 15

| Dissipated = July 23

| 10-min winds = 60

| 1-min winds = 65

| Pressure = 975

}}

Koni originated from a tropical depression situated within the monsoon trough to the east of the Philippines on July 15. Tracking westward, intensification was slow and the system remained a tropical depression as it moved across the central Philippines on July 17. Upon moving into the South China Sea, conditions allowed for quicker strengthening, and the cyclone reached tropical storm status on July 18 before reaching its peak intensity with maximum sustained winds of {{convert|110|km/h|mph|abbr=on}}, making it a severe tropical storm. However, atmospheric conditions began to deteriorate as Koni made landfall on Hainan on July 21, weakening the system. The tropical storm continued to weaken as it moved over the Gulf of Tonkin prior to a final landfall near Hanoi, Vietnam the following day. Tracking inland, the combination of land interaction and wind shear caused Koni to dissipate over Laos on July 23.{{cite web|title=Monthly Global Tropical Cyclone Summary July 2003|url=http://australiasevereweather.com/cyclones/2004/summ0307.htm|work=Summaries and Track Data|publisher=Australiansevereweather.com|access-date=November 5, 2013|author=Padgett, Gary|author2=Boyle, Kevin|author3=Chunliang, Huang |date=July 2003}}

Shortly after development, Koni tracked through the Philippines, killing two people.{{cite web|title=Tropical Cyclones in 2003|url=http://www.hko.gov.hk/publica/tc/tc2003.pdf|publisher=Hong Kong Observatory|access-date=November 3, 2013|location=Hong Kong, China|date=April 2004}} After moving into the South China Sea, turbulence produced by the storm resulted in an aviation incident involving a commercial airliner off the western Philippines. Three of the plane's occupants received minor injuries.{{cite web|title=Turbulence, Report on the accident to Airbus A330-342 B-HYA Within the Manila Flight Information Region on 18 July 2003|url=http://www.fss.aero/accident-reports/dvdfiles/HK/2003-07-18-HK.pdf|publisher=Flight Simulation Systems, LLC|access-date=November 6, 2013|author=Civil Aviation Department of Hong Kong|location=Hong Kong, China|date=May 2005}} In Hainan, Koni caused heavy rainfall, peaking at {{convert|189|mm|in|abbr=on}} at a station on Wuzhi Mountain. The rains resulted in the collapse of 1,400 homes and an estimated CN¥140.27 million (US$16.9 million) in direct economic losses. Effects were worst in Vietnam, where three people were killed.{{cite web|title=Typhoon Koni kills two, injures 18 in Vietnam|url=http://www.terradaily.com/2003/030723073608.hm58fcph.html|publisher=TerraDaily|access-date=November 6, 2013|author=Agence France-Pesse|location=Hanoi, Vietnam|date=July 23, 2003}} Widespread power outages occurred, and strong winds resulted in agricultural and infrastructural damage, particularly in Vietnam's northern provinces.

{{clear}}

{{Infobox tropical cyclone small

| Basin = WPac

| Image = TDIneng03.jpg

| Track = Ineng 2003 track.png

| Formed = July 30

| Dissipated = July 31

| 10-min winds = 25

| Pressure = 1004

}}

In July 30, the PAGASA briefly issued advisories on Tropical Depression Ineng off the east coast of Mindanao. The depression dissipated the next day, causing about P8 million (PHP, US$145,000) in damage.{{cite web|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |title=Tropical Depression "Ineng" (30 to 31 July 2003) |access-date=November 8, 2013 |url=http://kidlat.pagasa.dost.gov.ph/cab/track309.htm |archive-url=https://archive.today/20131108055639/http://kidlat.pagasa.dost.gov.ph/cab/track309.htm |url-status=dead |archive-date=November 8, 2013 }}

{{clear}}

{{main article|Tropical Storm Morakot (2003)}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Morakot 2003-08-03 0240Z.jpg

| Track = Morakot 2003 track.png

| Formed = July 31

| Dissipated = August 4

| 10-min winds = 45

| 1-min winds = 65

| Pressure = 992

}}

Morakot spawned from an area of disturbed weather in the Philippine Sea on July 31. Tracking northwest, favorable conditions allowed for the intensification of the system to tropical storm strength on August 2. Morakot reached peak intensity later that day with winds of {{convert|85|km/h|mph|abbr=on}} and a minimum barometric pressure of 992 mbar (hPa; 28.29 inHg). This intensity was held for several hours until less conducive atmospheric conditions slightly weakened the system; this was followed by Morakot making landfall on southern Taiwan on August 3. Subsequently, the storm weakened and moved into the Taiwan Strait before making its final landfall near Quanzhou, China the next day. The storm quickly weakened over the Chinese mainland, and dissipated entirely several hours after landfall.

In Taiwan, where Morakot first made landfall, heavy rainfall resulted in flooding. Commercial flights, schools, and rail service in some areas was cancelled in advance of the storm.{{cite news|title=Taiwan Morakot lands on south Taiwan on way to China|date=August 3, 2003|agency=Deutsche Presse-Agentur|location=Taipei, Taiwan}}{{subscription required|via=Lexis Nexis}}{{cite news|title=Tropical storm Morakot floods southern Taiwan, causes landslides|date=August 4, 2003|agency=Agence France Presse|location=Taipei, Taiwan}}{{subscription required|via=Lexis Nexis}} Precipitation there peaked at {{convert|653|mm|in|abbr=on}} over a period of nearly two days in Taitung County. Crop damage also resulted from the rainfall, and was estimated at over NT$70 million (US$2 million). In China, record rainfall was reported. The worst impacted city was Quanzhou, where losses due to Morakot reached CN¥240 million (US$29 million) and one death was reported. Power outages were also widespread across southeastern China. Due to preexisting drought conditions, 703 cloud seeding operations took place in order to artificially generate added rainfall; such operations resulted in moderate precipitation over the targeted area. Overall, Morakot caused roughly $31 million in damage and three deaths.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Typhoon Etau 2003.jpg

| Track = Etau 2003 track.png

| Formed = August 2

| Dissipated = August 9

| 10-min winds = 85

| 1-min winds = 110

| Pressure = 945

}}

{{main article|Typhoon Etau (2003)}}

A tropical depression developed on August 2 southeast of Guam, and gradually intensified while moving to the northwest, becoming a tropical storm on August 3 and a typhoon a day later. Etau formed an eye and became a large storm by the time it approached Okinawa on August 7. The typhoon attained peak winds of {{convert|155|km/h|mph|abbr=on}} before weakening slightly while turning to the northeast. Etau made landfall on the Japanese island of Shikoku on August 8, and later moved across portions of Honshu and Hokkaido. After weakening to tropical storm status, the cyclone became extratropical on August 9 and dissipated three days later.

While passing northeast of the Philippines, the typhoon caused light damage in the archipelago.{{cite web|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|title=Typhoon "Kabayan" (04-06 August 2003)|access-date=November 3, 2013|url=http://kidlat.pagasa.dost.gov.ph/cab/track311.htm|archive-url=https://web.archive.org/web/20131105062341/http://kidlat.pagasa.dost.gov.ph/cab/track311.htm|archive-date=November 5, 2013}} The eye crossed over Okinawa, where Etau left 166,800 people without power and caused 10 injuries.{{cite web|author=Digital Typhoon|title=Digital Typhoon: Weather Disaster Report (2003-936-06)|access-date=November 4, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-936-06&lang=en}} Near where Etau first struck Japan, Muroto reported a peak wind gust of {{convert|166|km/h|mph|abbr=on}}, at the time the third strongest on record there. The typhoon also dropped torrential rainfall peaking at {{convert|683|mm|in|abbr=on}}.{{cite web|author=Digital Typhoon|title=Typhoon 200310 (Etau)|access-date=November 4, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200310&basin=wnp&lang=en}} The combination of winds and rainfall caused landslides, particularly on Hokkaido.{{cite journal|author=Yasuhiro Murakami|author2=Osamu Shimizu|author3=Hajime Sato|author4=Takashi Yamada|journal=International Journal of Erosion Control Engineering|volume=1|year=2008|title=Sediment-related Disaster Caused by Typhoon 0310 (Etau) in Hidaka Region of Hokkaido, Japan|publisher=Japan Society of Erosion Control Engineering|access-date=November 4, 2013|url=http://www.jsece.or.jp/jece/archive/1/Murakami%20et%20al..pdf|archive-date=November 5, 2013|archive-url=https://web.archive.org/web/20131105062352/http://www.jsece.or.jp/jece/archive/1/Murakami%20et%20al..pdf|url-status=dead}} Nationwide, Etau killed 20 people, destroyed 708 houses, and caused ¥35.1 billion (JPY, $294.8 million USD) in damage.

{{clear}}

{{main article|Typhoon Krovanh (2003)}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Krovanh 2003-08-25 0340Z.jpg

| Track = Krovanh 2003 track.png

| Formed = August 13

| Dissipated = August 26

| 10-min winds = 65

| 1-min winds = 90

| Pressure = 970

}}

Krovanh originated from a tropical disturbance within the monsoon trough east of Chuuk State on August 13. Despite rather favorable conditions, the initial tropical depression did not intensify significantly and degenerated into a remnant low on August 18. However, these remnants were able to reorganize and the system was reclassified as a tropical cyclone a day later. Intensification was rather rapid upon the storm's reformation – the depression reached tropical storm status on August 20 and then typhoon intensity two days later. Shortly after, Krovanh made landfall on Luzon at peak intensity with winds of {{convert|120|km/h|mph|abbr=on}}. The typhoon emerged into the South China Sea as a much weaker tropical storm, though it was able to restrengthen over warm waters. Once again at typhoon intensity, Krovanh clipped Hainan before moving over the Leizhou Peninsula on its way to a final landfall near Cẩm Phả, Vietnam on August 25. Quick weakening due to land interaction occurred as Krovanh moved across northern Vietnam, where the storm met its demise the following day.

Krovanh first struck the Philippines, resulting in heavy rainfall and displacing approximately 1,000 families. The flooding caused severe damage and killed one person. Krovanh's effects were much more severe in China. In Hong Kong, eleven people were injured and isolated flooding occurred as a result of the typhoon's outer rainbands. However, Guangdong Province, Hainan Province, and Guangxi were the Chinese regions most extensively impacted. The typhoon brought record wind gusts into Guangxi. In those three regions combined, 13,000 homes were estimated to have collapsed and a large swath of farmland was damaged. Two people were killed in China and economic losses approximated to ¥2.1 billion (US$253 million). Due to its positioning and track, of all areas in Vietnam only the country's more northern regions were impacted by Krovanh. Flash flooding occurred in earnest in those regions, and 1,000 homes were flattened.{{cite news|title=Typhoon Krovanh kills one, injures five in northern Vietnam|date=August 26, 2003|agency=Agence France Pesse|location=Hanoi, Vietnam}}{{subscription required|via=Lexis Nexis}} One person was killed and five others were injured in Vietnam.{{cite news|title=Typhoon Kronvanh kills one, injures five in Vietnam|date=August 26, 2003|agency=Deutsche Presse-Agentur|location=Vietnam}}{{subscription required|via=Lexis Nexis}} Overall, the typhoon was responsible for the deaths of four persons.

{{Infobox Hurricane Small

| Basin = WPac

| Image = Vamco 2003-08-20 0450Z.jpg

| Track = Vamco 2003 track.png

| Formed = August 18

| Dissipated = August 20

| 10-min winds = 35

| 1-min winds = 35

| Pressure = 996

}}

The monsoon trough spawned several tropical disturbances in the middle of August, one of which became Tropical Depression Lakay near the Philippines. On August 18, an area of convection persisted on the southern side of a circulation, developing into a tropical depression east of Luzon. It moved quickly northward and later to the northwest in an area generally unfavorable for strengthening, such as the presence of wind shear and land interaction. On August 19, the JMA upgraded the depression to Tropical Storm Vamco to the east of Taiwan. Later that day, the circulation passed just {{convert|55|km|mi|abbr=on}} north of Taipei, although the convection was exposed that time. On August 20, the JMA assessed Vamco as dissipating in the Taiwan Strait, although the JTWC continued advisories until the storm moved ashore in southeastern China.

Rainfall in Taiwan reached {{convert|69|mm|in|abbr=on}} in Ilan County. On the island, the storm left several hundred houses without power due to a lightning strike.{{cite news|agency=Agence France-Presse|date=August 19, 2013|title=Tropical storm Vamco approaches Taiwan, disrupts power supply|newspaper=Terra Daily|access-date=November 8, 2013|url=http://www.terradaily.com/2003/030819121443.j9znnlpw.html}} On mainland China, rainfall peaked at {{convert|101|mm|in|abbr=on}} in Wenzhou, Zhejiang, which were largely beneficial in easing drought conditions, while winds gusted to {{convert|100|km/h|mph|abbr=on}}. The storm damaged or destroyed 5,880 houses and flooded {{convert|1287|ha|acre|abbr=on}} of paddy fields, causing ¥38.6 million (CNY, US$4.7 million) in damage.

{{clear}}

{{Infobox tropical cyclone small

| Basin = WPac

| Image = Lakay 2003-08-19 0540Z.jpg

| Track = Lakay 2003 track.png

| Formed = August 18

| Dissipated = August 20

| 10-min winds = 30

| Pressure = 996

}}

The monsoon trough spawned a tropical depression north of Luzon on August 18, with PAGASA naming it Lakay. There were several circulations in the region, with Tropical Storm Vamco to the northeast near Taiwan, and the overall system moved generally westward. PAGASA briefly classified Lakay as a tropical storm on August 19 before ending advisories the next day. The system spread rainfall across China, reaching {{convert|82.4|mm|in|abbr=on}} in Xiamen, Fujuan.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Dujuan 2003-09-01 0513Z (remake).jpg

| Track = Dujuan 2003 track.png

| Formed = August 27

| Dissipated = September 3

| 10-min winds = 80

| 1-min winds = 125

| Pressure = 950

}}

{{main article|Typhoon Dujuan (2003)}}

On August 27, a tropical depression developed about {{convert|520|km|mi|abbr=on}} northwest of Guam, which initially drifted to the southwest before turning to the northwest. On August 29, the JMA upgraded it to Tropical Storm Dujuan, and that day PAGASA began issuing advisories on Tropical Storm Onyok.{{cite web|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|title=Typhoon "Onyok" (29 August to September 2 2003)|access-date=October 12, 2013|url=http://kidlat.pagasa.dost.gov.ph/cab/track315.htm|archive-url=https://web.archive.org/web/20131112033308/http://kidlat.pagasa.dost.gov.ph/cab/track315.htm|archive-date=November 12, 2013}} The storm quickly intensified into a typhoon, after developing an eye in the center. On September 1, the JMA estimated Dujuan attained peak 10 minute winds of {{convert|150|km/h|mph|abbr=on}}, and the JTWC assessed peak 1–minute winds of {{convert|230|km/h|mph|abbr=on}}. While near peak intensity, the center of Dujuan passed about {{convert|45|km|mi|abbr=on}} south of the southern tip of Taiwan. The typhoon weakened steadily and was a severe tropical storm by the time it made landfall on September 2 just east of Hong Kong. The JTWC estimated landfall winds of {{convert|185|km/h|mph|abbr=on}}, making it the strongest typhoon to strike the Pearl River Delta since Typhoon Hope in 1979.{{cite news|agency=Reuters|date=September 4, 2003|title=Scores dead as floods, storm wreak havoc in China|publisher=ReliefWeb|access-date=October 14, 2013|url=http://reliefweb.int/report/china/scores-dead-floods-storm-wreak-havoc-china}} Dujuan rapidly weakened while continuing westward through China, dissipating on September 3 over Guangxi.

In the Philippines, Dujuan interacted with the monsoon to produce heavy rainfall,{{cite news|date=September 3, 2003|author=Rainier Allan Ronda|title=Classes Suspended as Typhoon 'Onyok' Flood Metro|newspaper=Philippine Star|access-date=October 13, 2013|url=http://www.newsflash.org/2003/05/hl/hl018713.htm|archive-date=July 14, 2014|archive-url=https://web.archive.org/web/20140714125616/http://www.newsflash.org/2003/05/hl/hl018713.htm|url-status=dead}} killing one person.{{cite web|publisher=National Disaster Coordinating Council Office of Civil Defense Operations Center|title=Destructive Typhoons 1970–2003|access-date=October 14, 2013|url=http://baseportal.com/cgi-bin/baseportal.pl?htx=/miso/typhoons&cmd=list&range=0,20&YEAR~=2003&cmd=all&Id=226}} While in the vicinity, Dujuan produced gusts of {{convert|100|km/h|mph|abbr=on}} on Yonaguni, a Japanese subdivision of Okinawa.{{cite web|author=Digital Typhoon|title=Weather Disaster Report (2003-918-09)|access-date=October 14, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-918-09&lang=en|language=ja}} Heavy rainfall in Taiwan reached {{convert|628|mm|in|abbr=on}} in Pingtung County, and winds peaked at {{convert|176|km/h|mph|abbr=on}} on Orchid Island before the anemometer was destroyed. The caused about NT$200 (NWD, $115 million USD) in crop damage, and killed three people.{{cite web|publisher=Hong Kong Observatory|title=Tropical Cyclones in 2003|access-date=October 14, 2013|url=http://www.hko.gov.hk/publica/tc/tc2003/english/section3_4rpt.htm|date=|archive-date=September 24, 2015|archive-url=https://web.archive.org/web/20150924044715/http://www.hko.gov.hk/publica/tc/tc2003/english/section3_4rpt.htm|url-status=dead}} Damage was minor in Hong Kong, and four fishermen were missing and presumed drowned after their boat sank. On the Chinese mainland, strong winds left 90% of the city of Shenzhen without power, and killed 16 construction workers due to a half-finished building collapsing. Across Guangdong, the typhoon damaged crops and destroyed 54,000 homes were destroyed.{{cite news|agency=Agence France-Presse|date=September 5, 2003|title=Freak weather spells misery for 12 million Chinese|publisher=ReliefWeb|access-date=October 14, 2013|url=http://reliefweb.int/report/china/freak-weather-spells-misery-12-million-chinese}} Overall damage in China was estimated at ¥2.3 billion (CNY, US$277 million), and across Guangdong, the typhoon killed 40 people.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = File:Typhoon maemi 2003.jpg

| Track = Maemi 2003 track.png

| Formed = September 5

| Dissipated = September 13

| 10-min winds = 105

| 1-min winds = 150

| Pressure = 910

}}

{{Main article|Typhoon Maemi}}

Typhoon Maemi formed on September 4 from the monsoon trough in the western Pacific Ocean. It slowly intensified into a tropical storm while moving northwestward, and Maemi became a typhoon on September 8. That day, it quickly intensified due to favorable conditions, developing a well-defined eye and reaching peak maximum sustained winds of {{convert|195|km/h|mph|abbr=on}}. While near peak intensity, Maemi was decelerating and began turning to the north-northeast. The eyewall soon after passed over the Japanese island of Miyako-jima on September 10, producing the fourth lowest pressure on record in Japan after a pressure of {{convert|912|mbar|inHg|abbr=on}} was recorded. With warm waters, Maemi was able to maintain much of its intensity before it made landfall just west of Busan, South Korea on September 12.{{cite web|publisher=National Emergency Management |title=Disaster Reports |year=2008 |access-date=October 22, 2013 |url=http://eng.nema.go.kr/sub/cms3/3_2.asp |url-status=dead |archive-url=https://web.archive.org/web/20131029185710/http://eng.nema.go.kr/sub/cms3/3_2.asp |archive-date=October 29, 2013 }} On Jeju Island, Maemi produced a peak wind gust of {{convert|216|km/h|mph|abbr=on}} and a minimum pressure of {{convert|950|mbar|inHg|abbr=on}}, both setting records for the country, and making it the most powerful typhoon to strike South Korea since record-keeping began in the country in 1904.{{cite web |author=Guy Carpenter |title=Typhoon Maemi Loss Report 2003 |access-date=October 18, 2013 |url=http://gcportal.guycarp.com/portal/extranet/popup/pdf/GCPub/GC%20Typhoon%20Maemi%20report.pdf?vid=1 |format=PDF |archive-url=https://web.archive.org/web/20131019163654/http://gcportal.guycarp.com/portal/extranet/popup/pdf/GCPub/GC%20Typhoon%20Maemi%20report.pdf?vid=1 |archive-date=October 19, 2013 |url-status=dead }} The typhoon became extratropical in the Sea of Japan the next day, although the remnants persisted for several more days, bringing strong winds to northern Japan.

The typhoon first affected the Ryukyu Islands of Japan. On Miyako-jima, strong winds damaged 104 buildings,{{cite web|author=Digital Typhoon|publisher=National Institute of Informatics|title=Weather Disaster Report (2003-927-03)|access-date=October 18, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-927-03&lang=en}} and 95% of residents lost power.{{cite news|agency=Japan Economic Newswire|date=September 10, 2003|title=Typhoon Maemi hits Miyakojima Island, 63 injured}}{{subscription required|via=Lexis Nexis}} Maemi dropped heavy rainfall there, including rates of {{convert|58.5|mm|in|abbr=on}} in an hour, and {{convert|402.5|mm|in|abbr=on}} in 24 hours, the latter setting a record. One person died on Miyako-jima after being struck by flying glass.{{cite news|agency=Associated Press International|author=Eric Talmadge|date=September 11, 2003|title=Powerful typhoon sweeps across Japan's southern islands; one dead, dozens injured}}{{subscription required|via=Lexis Nexis}} Elsewhere in Japan, the storm caused flights to be canceled,{{cite news|agency=Japan Economic Newswire|date=September 10, 2003|title=Typhoon Maemi likely to swerve by Miyakojima Thursday}}{{subscription required|via=Lexis Nexis}} while rainfall-induced landslides blocked roads.{{cite web|author=Digital Typhoon|publisher=National Institute of Informatics|title=Weather Disaster Report (2003-893-13)|access-date=October 18, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-893-13&lang=en}} There were two other deaths in Japan, and damage totaled ¥11.3 billion (JPY, $96 million USD).{{cite web|author=Digital Typhoon|title=Typhoon 200314 (Maemi)|access-date=October 18, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200314&basin=wnp&lang=en|archive-url=https://archive.today/20131018152747/http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200314&basin=wnp&lang=en|archive-date=October 18, 2013|url-status=dead}} Damage was heaviest in South Korea, notably where it moved ashore. Winds in Busan near the landfall location reached {{convert|154|km/h|mph|abbr=on}}, the second-highest on record.{{cite news|agency=Korea Times|author=Hong Seo-rim|date=September 14, 2003|title=Typhoon Causes Blackouts, Floods}}{{subscription required|via=Lexis Nexis}} There, the port sustained heavy damage, causing disruptions to exports in the months following the storm. Nationwide, the high winds destroyed about 5,000 houses and damaged 13,000 homes and businesses, leaving 25,000 people homeless.{{cite news|agency=Agence France-Presse|date=September 14, 2003|title=109 people dead or missing as South Korea counts cost of killer typhoon|publisher=ReliefWeb|access-date=October 24, 2013|url=http://reliefweb.int/report/republic-korea/109-people-dead-or-missing-south-korea-counts-cost-killer-typhoon}} About 1.47 million lost power,{{cite web|agency=Korean Information Service|publisher=ReliefWeb|date=September 15, 2003|title=Rep. of Korea: Government provides funds for rescue operations in typhoon-hit areas|access-date=October 24, 2013|url=http://reliefweb.int/report/republic-korea/rep-korea-government-provides-funds-rescue-operations-typhoon-hit-areas}} and widespread crop damage occurred, resulting in the worst rice crop in 23 years.{{cite news|agency=Korea Times|date=November 15, 2003|title=Rice Output Lowest in 23 Yrs}}{{subscription required|via=Lexis Nexis}} Across South Korea, Maemi killed 117 people, and overall damage totaled ₩5.52 trillion won (US$4.8 billion).

{{clear}}

{{Infobox tropical cyclone small

| Basin = WPac

| WarningCenter = PAGASA

| Image = Quiel 2003-09-17 0510Z.jpg

| Track = Quiel 2003 track.png

| Formed = September 15

| Dissipated = September 19

| 10-min winds = 30

| Pressure = 1000

}}

Later in September, the monsoon trough spawned a disturbance east of the Philippines that PAGASA classified as Tropical Depression Quiel on September 15. The system moved westward but never intensified, dissipating west of Luzon on September 19.{{cite report|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |title=Tropical Depression "Quiel" (15 to 19 September 2003) |access-date=November 8, 2013 |url=http://kidlat.pagasa.dost.gov.ph/cab/track317.htm |archive-url=https://archive.today/20131108055605/http://kidlat.pagasa.dost.gov.ph/cab/track317.htm |url-status=dead |archive-date=November 8, 2013 }} The broad system also spawned Typhoon Choi-wan.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Choi-wan 2003-09-21 0140Z.jpg

| Track = Choi-wan 2003 track.png

| Formed = September 16

| Dissipated = September 23

| 10-min winds = 70

| 1-min winds = 100

| Pressure = 955

}}

In the middle of September, the monsoon trough spawned a rapidly organizing disturbance east-northeast of Luzon, with weak wind shear and favorable conditions. On September 16, the JMA classified it as a tropical depression, and the JTWC initiated advisories the next day. The system moved to the northwest due to the subtropical ridge to the northeast and later to the north. On September 18, the JMA upgraded the depression to Tropical Storm Choi-wan, the same day that PAGASA classified it as Tropical Storm Roskas (the only time this name was used, as it was retired the following year). An eastward-moving trough turned the storm to the northeast, bringing the track over Okinawa and Amami Ōshima on September 19. Choi-wan continued gradually intensifying, becoming a typhoon on September 20 to the southeast of Japan. That day, the JMA estimated peak winds of {{convert|130|km/h|mph|abbr=on}}, and the JTWC estimated peak 1 minute winds of {{convert|185|km/h|mph|abbr=on}} on September 21, after Choi-wan developed a well-defined eye. The typhoon weakened due to increasing wind shear, deteriorating to severe tropical storm status on September 22 before JMA declared it extratropical on September 23. The remnants of Choi-wan continued to the northeast, exited the basin on September 24, and eventually struck southern Alaska on September 25.{{cite report|author=George P. Bancroft|date=April 2004|title=Mariners Weather Log Vol. 48, No. 1|publisher=National Oceanic and Atmospheric Administration|access-date=November 9, 2013|url=http://www.vos.noaa.gov/MWL/april_04/pacific.shtml}}

Wind gusts in Okinawa reached {{convert|115|km/h|mph|abbr=on}}, while on the volcanic island of Hachijō-jima, gusts reached {{convert|214|km/h|mph|abbr=on}}. On the Japanese mainland, winds gusted to {{convert|126|km/h|mph|abbr=on}} at Chōshi, Chiba. Choi-wan dropped heavy rainfall while near Japan, peaking at {{convert|316|mm|in|abbr=on}} on Miyake-jima.{{cite report|author=Digital Typhoon|title=Typhoon 200315 (Choi-wan)|access-date=November 9, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200315&basin=wnp&lang=en}} In Okinawa, Choi-wan flooded a boat, forcing its occupants to be rescued by the Coast Guard. Also on the island, heavy rainfall caused landslides and flooded houses.{{cite report|author=Digital Typhoon|title=Weather Disaster Report (2003-936-11)|access-date=November 9, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-936-11&lang=en}} In Amami Ōshima, the storm left 10,810 people without power.{{cite report|author=Digital Typhoon|title=Weather Disaster Report (2003-827-27)|access-date=November 9, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-827-27&lang=en}} On Hachijō, wind gusts of {{convert|214|km/h|mph|abbr=on}} damaged about 200 houses.{{cite journal|author=Hitomitsu Kikitsu|author2=Yasuo Okuda|author3=Hisashi Okada|title=High Wind Damage in Japan from Typhoon Maemi and Choi-wan on September 2003|publisher=Public Works Research Institute|access-date=November 9, 2013|url=http://www.pwri.go.jp/eng/ujnr/joint/36/paper/33kikits.pdf}} Nationwide, Choi-wan destroyed 191 homes, injured 9 people, and left about ¥300 million (JPY, US$2.5 million).

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Typhoon Koppu 2003.jpg

| Track = Koppu 2003 track.png

| Formed = September 24

| Dissipated = September 30

| 10-min winds = 70

| 1-min winds = 90

| Pressure = 960

}}

Towards the end of September, the monsoon trough spawned a tropical disturbance east-northeast of Yap, which became a tropical depression on September 24. There were initially several circulations, with a tropical upper tropospheric trough to the northeast increasing outflow. After slowing and turning to the northeast, the depression intensified into Tropical Storm Koppu on September 26. After the storm developed a large eye feature, the JTWC upgraded it to typhoon status on September 27, although the JMA did not follow suit until the following day while near Chichi-jima. Also that day, Koppu passed {{convert|95|km|mi|abbr=on}} west of Iwo Jima, and the JMA estimated peak 10 minute winds of {{convert|130|km/h|mph|abbr=on}}. The JTWC estimated peak 1 minute winds of {{convert|165|km/h|mph|abbr=on}}, before an approaching trough caused the typhoon to accelerate northeastward. The convection diminished near the center, causing Koppu to become extratropical on September 30. The remnants continued generally northeastward through the Aleutian Islands, eventually passing south of mainland Alaska on October 7.

On Chichi-jima, Typhoon Koppu produced sustained winds of {{convert|102|km/h|mph|abbr=on}}, with gusts to {{convert|200|km/h|mph|abbr=on}}, which was the third strongest on record for the station. Rainfall there reached {{convert|183|mm|in|abbr=on}}.{{cite report|author=Digital Typhoon|title=Typhoon 200316 (KOPPU)|access-date=November 10, 2013|language=ja|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200316&basin=wnp&lang=en}} Wind gusts on Iwo Jima peaked at {{convert|109|km/h|mph|abbr=on}}.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = 18W 2003-10-08 0530Z.jpg

| Track = 18W 2003 track.png

| Formed = October 6

| Dissipated = October 10

| 10-min winds = 30

| 1-min winds = 25

| Pressure = 1004

}}

On October 6, the JTWC classified Tropical Depression 18W early in the month off the west coast of Luzon. With weak steering currents, the system moved slowly southwestward before looping to the northwest. On October 10, the depression dissipated just off the coast of southern China.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = 19W 2003-10-10 0215Z.jpg

| Track = 19W 2003 track.png

| Formed = October 10

| Dissipated = October 13

| 1-min winds = 30

| Pressure = 1000

}}

Following the demise of 18W, the JTWC monitored Tropical Depression 19W, which developed on October 12 after an extratropical storm produced an area of convection. Described as a subtropical low, the depression moved generally northeastward toward Japan due to an approaching cold front. The depression moved through Kyushu and Honshu before dissipating on October 13.

The depression dropped {{convert|285|mm|in|abbr=on}} of rainfall in Kōchi, while strong winds associated reached {{convert|217|km/h|mph|abbr=on}} through a storm-produced downburst. The winds knocked over two cranes, killing two people, and left about 9,000 homes without power. The depression also killed two people due to drownings.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Typhoon Ketsana 2003.jpg

| Track = Ketsana 2003 track.png

| Formed = October 17

| Dissipated = October 27

| 10-min winds = 90

| 1-min winds = 125

| Pressure = 940

}}

In the middle of October, an area of convection persisted along the monsoon trough between Luzon and Guam, developing into a tropical depression on October 17. The same monsoon trough later spawned Typhoon Parma to the east. For several days, the system remained disorganized while drifting to the west-northwest due to weak steering currents south of the subtropical ridge. On October 19, the JMA upgraded the depression to Tropical Storm Ketsana, and by that time the storm had begun drifting to the northeast. With favorable outflow, Ketsana quickly intensified into a typhoon on October 20 after developing an eye, and two days later, the JMA estimated peak winds of {{convert|165|km/h|mph|abbr=on}}. The JTWC estimated peak 1 minute winds of {{convert|230|km/h|mph|abbr=on}} around the time the well-defined eye had expanded to {{convert|37|km|mi|abbr=on}}. Subsequently, the typhoon accelerated northeastward into the westerlies and began weakening due to increasing wind shear and dry air. On October 26, Ketsana became extratropical to the east of Japan and dissipated the next day. The passage of the typhoon caused surface chlorophyll a concentration in the ocean to increase 30-fold.{{cite journal|author=Mitsuhiro Toratani|journal=SPIE Proceedings|date=December 2008|volume=7150|title=Primary production enhancement by typhoon Ketsana in 2003 in western North Pacific|access-date=November 10, 2013|url=http://spie.org/x648.html?product_id=806426}}

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Super Typhoon Parma 2003.jpg

| Track = Parma 2003 track.png

| Formed = October 19

| Dissipated = October 31

| 10-min winds = 95

| 1-min winds = 130

| Pressure = 930

}}

The same monsoon trough that spawned Typhoon Koppu also produced an area of convection to the north-northeast of Guam, becoming a tropical depression on October 19. The system moved northwestward and later turned to the northeast around the subtropical ridge. With low wind shear and favorable outflow, the convection became better organized, and the JMA upgraded it to Tropical Storm Parma on October 21. After an eye began to form, Parma was upgraded to typhoon status the next day. An approaching trough caused Parma to accelerate northeastward while also increasing outflow. On October 24, the JMA estimated peak winds of {{convert|175|km/h|mph|abbr=on}} while the JTWC estimated winds of {{convert|240|km/h|mph|abbr=on}}, an unusually high intensity for 30° N. Subsequently, Parma rounded the subtropical ridge and began moving to the east-southeast, beginning a nearly week-long loop. The cold front had passed to the north and failed to bring the typhoon northeastward.

Increasing wind shear weakened the convection, and Parma deteriorated into a severe tropical storm on October 26. The next day, it began moving westward while passing about {{convert|345|km|mi|abbr=on}} north of Wake Island. A large eye of {{convert|110|km|mi|abbr=on}} in diameter developed, and on October 28, the JMA re-upgraded Parma to typhoon status. The next day, the typhoon turned to the northeast due to another approaching trough. With decreasing wind shear and warmer waters, Parma re-intensified significantly on October 29, reaching a secondary peak of {{convert|165|km/h|mph|abbr=on}} according to JMA, and {{convert|215|km/h|mph|abbr=on}} according to JTWC. The storm moved very closely along the track it took several days prior. Increasing wind shear on October 30 caused rapid weakening, resulting in the eye dissipating. By the next day, the center was exposed, and Parma became extratropical, later exiting the basin on November 1. The remnants weakened, later turning to the southeast and dissipating on November 11 southwest of California.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = 23W 2003-10-21 0335Z.jpg

| Track = 23W 2003 track.png

| Formed = October 21

| Dissipated = October 23 (exited basin)

| 10-min winds = 25

| 1-min winds = 30

| Pressure = 1008

}}

On October 21, a monsoon trough spawned a tropical depression in the Gulf of Thailand, which moved northwestward and crossed into the Indian Ocean, dropping heavy rainfall in Thailand.

{{clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Ursula 2003-10-22 0540z.jpg

| Track = Ursula 2003 track.png

| Formed = October 21

| Dissipated = October 24

| 10-min winds = 30

| 1-min winds = 25

| Pressure = 1004

}}

On October 22, a tropical depression developed in the South China Sea, classified by PAGASA as Ursula. The system moved eastward and crossed Palawan before dissipating on October 24. In the Philippines, the depression killed one person and caused minor damage.{{cite report|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|title=Tropical Depression "Ursula" (23 to 24 October 2003)|access-date=November 8, 2013|url=http://kidlat.pagasa.dost.gov.ph/cab/track321.htm|archive-url=https://web.archive.org/web/20131220114259/http://kidlat.pagasa.dost.gov.ph/cab/track321.htm|archive-date=December 20, 2013}}

{{Clear}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Melor 2003-11-01 0440Z.jpg

| Track = Melor 2003 track.png

| Formed = October 29

| Dissipated = November 5

| 10-min winds = 50

| 1-min winds = 75

| Pressure = 980

}}

Late in October, an area of convection persisted northwest of Palau and quickly organized into a tropical depression on October 29. Moving west-northwestward toward the Philippines due to a ridge to the east, the depression intensified into Tropical Storm Melor on October 30. With minimal wind shear, the storm strengthened further and developed a large eye. The JTWC upgraded Melor to typhoon status on October 31, estimating peak 1 minute winds of {{convert|140|km/h|mph|abbr=on}}, although the JMA estimated the storm only attained peak 10 minute winds of {{convert|95|km/h|mph|abbr=on}}. Early on November 1, Melor made landfall on northeastern Luzon in the Philippines, south of Palanan. The storm weakened over land and emerged into the South China Sea. By that time, it was moving northward along the periphery of the ridge to the east. On November 2, Melor turned to the northeast, passing just east of Taiwan. The next day, it weakened to tropical depression status, and after meandering offshore eastern Taiwan, Melor continued northeastward. It became extratropical on November 5 and dissipated the next day near southern Japan.

In the Philippines, Melor dropped about {{convert|150|mm|in|abbr=on}} of rainfall, which flooded the Cagayan River and killed four people.{{cite report|publisher=NASA Earth Observatory|title=Flooding in Luzon, The Philippines|date=November 11, 2003|access-date=November 11, 2013|url=http://earthobservatory.nasa.gov/IOTD/view.php?id=3949}} In Taiwan, rainfall reached {{convert|554|mm|in|abbr=on}} in Pingtung County. On the Japanese island of Hateruma, rainfall totaled {{convert|197|mm|in|abbr=on}},{{cite report|author=Digital Typhoon|title=Typhoon 200319 (Melor)|access-date=November 11, 2013|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200319&basin=wnp&lang=en}} which broke the hourly and daily record for the station in November.

{{clear}}

{{main article|Typhoon Nepartak (2003)}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Typhoon Nepartak 17 nov 2003 0320Z.jpg

| Track = Nepartak 2003 track.png

| Formed = November 11

| Dissipated = November 19

| 10-min winds = 65

| 1-min winds = 75

| Pressure = 970

}}

A tropical depression developed near Yap on November 11. The system intensified gradually as it tracked quickly westward toward the Philippines. An anticyclone aloft allowed for strengthening, and the JMA upgraded the depression to Tropical Storm Nepartak on November 12. Simultaneously, the cyclone entered the area of responsibility of the Philippine Atmospheric, Geophysical and Astronomical Services Administration, which named it Tropical Storm Weng.{{cite report|title=Tropical Storm Weng |access-date=January 31, 2013 |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |url=http://kidlat.pagasa.dost.gov.ph/cab/track323.htm |archive-url=https://archive.today/20130416100729/http://kidlat.pagasa.dost.gov.ph/cab/track323.htm |url-status=dead |archive-date=April 16, 2013 }} At around 1600 UTC on November 13, Nepartak made landfall on northern Samar Island in the Philippines before traversing the remainder of the archipelago from east to west. The cyclone emerged into the South China Sea weakened but quickly re-intensified while continuing to the west-northwest. The JTWC estimated peak winds of {{convert|140|km/h|mph|abbr=on}} on November 16, and later that day, the JMA upgraded the storm to typhoon status, estimating peak 10-minute winds of {{convert|120|km/h|mph|abbr=on}}. On November 18, Nepartak passed near southwestern Hainan and weakened, with the convection diminishing from the circulation. By the next day, the system weakened to tropical depression status, and dissipated shortly after moving ashore over Beihai, China.

In the Philippines, Nepartak produced strong winds, heavy rainfall, and rough seas.{{cite news|newspaper=Deutsche Presse-Agentur|title=Four people killed in storm in Philippines|date=November 13, 2003}}{{subscription required|via=Lexis Nexis}} The storm caused widespread power outages and ferry disruptions.{{cite news|newspaper=Agence France Presse|title=Tropical storm Nepartak pounds central Philippines|date=November 14, 2003}}{{subscription required|via=Lexis Nexis}}{{cite news|newspaper=Associated Press|title=Four killed, thousands stranded by storm in central Philippines|date=November 14, 2003}}{{subscription required|via=Lexis Nexis}} According to the PAGASA in its post-storm report, a total of 13 people died during the storm. On Hainan, the storm helped end one of the worst summer droughts in almost 65 years, although it also left heavy crop damage, wrecking {{convert|64000|ha|acre|abbr=on}} of fields and killing 400 head of livestock.{{cite news|newspaper=Agence France Presse|title=Typhoon Nepartak causes heavy losses to southern China's Hainan island|date=November 20, 2003}}{{subscription required|via=Lexis Nexis}} With about 800 homes destroyed, damage on Hainan amounted to $197 million (2003 USD). Effects were minor in mainland China.{{cite news|newspaper=Agence France Presse|title=Vietnam mops up after deadly floods as new storm advances|date=November 17, 2003}}{{subscription required|via=Lexis Nexis}}

{{clear}}

{{main article|Typhoon Lupit (2003)}}

{{Infobox Hurricane Small

| Basin = WPac

| Image = Lupit 2003-11-26 0135Z.jpg

| Track = Lupit 2003 track.png

| Formed = November 18

| Dissipated = December 2

| 10-min winds = 100

| 1-min winds = 145

| Pressure = 915

}}

Typhoon Lupit formed on November 18 from the monsoon trough to the west of the Marshall Islands.{{cite report|publisher=Japan Meteorological Agency|title=Annual Report on Activities of the RSMC Tokyo – Typhoon Center 2003|access-date=January 27, 2013|url=http://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/AnnualReport/2003/Text/Text2003.pdf}}{{cite report|author=Joint Typhoon Warning Center|publisher=United States Navy|access-date=January 27, 2013|title=2003 Annual Tropical Cyclone Report|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/2003atcr.pdf|date=|archive-date=February 21, 2013|archive-url=https://web.archive.org/web/20130221071623/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/2003atcr.pdf|url-status=dead}} Early in its duration, it moved generally to the west or west-southwest. On November 21, the depression intensified into Tropical Storm Lupit, and two days later, it strengthened into a typhoon, developing an eye. Lupit later began a prolonged movement to the northwest, during which it passed near several islands in Yap State. The typhoon reached peak intensity on November 26, with peak 10–minute sustained winds of {{convert|185|km/h|mph|abbr=on}}. It later weakened due to a variety of unfavorable conditions, and after recurving to the northeast, Lupit became extratropical south of Japan on December 2.

Typhoon Lupit first affected Pohnpei with gusty winds, and later it damaged or destroyed about 200 homes in Chuuk State. There, high waves flooded roads and homes, while high winds damaged crops. Damage was heaviest in Yap State, mostly in the small Ulithi atoll and Fais Island. On both islands, the typhoon contaminated the water supply and wrecked the crops. Rainfall reached {{convert|263|mm|in|abbr=on}} on Ulithi, and gusts reached {{convert|158|km/h|mph|abbr=on}}. Throughout the FSM, damage totaled about $1.7 million, although there were no deaths.{{citation |pages=242–243|title=Storm Data and Unusual Weather Phenomena with Late Reports and Corrections|date=April 2004|volume=24|number=4|publisher=National Oceanic and Atmospheric Administration|access-date=January 27, 2013|url=http://www1.ncdc.noaa.gov/pub/orders/IPS-0FF500DC-E840-48A1-89B5-CB059E6A6E53.pdf|journal=|archive-date=January 29, 2013|archive-url=https://www.webcitation.org/6E1SWQKZD?url=http://www1.ncdc.noaa.gov/pub/orders/IPS-0FF500DC-E840-48A1-89B5-CB059E6A6E53.pdf|url-status=dead}} The damage prompted the FSM government to declare two states as disaster areas,{{cite report|author=UN Office for the Coordination of Humanitarian Affairs|publisher=ReliefWeb|title=Micronesia - Typhoon Lupit OCHA Situation Report No. 1|url=http://reliefweb.int/report/micronesia-federated-states/micronesia-typhoon-lupit-ocha-situation-report-no-1}} as well as a disaster declaration from the United States federal government.{{cite report|date=December 19, 2003|title=President Orders Disaster Aid For Micronesia Typhoon Recovery|publisher=Federal Emergency Management Agency|access-date=January 27, 2013|url=http://www.fema.gov/news-release/2003/12/19/president-orders-disaster-aid-micronesia-typhoon-recovery}} While Lupit was becoming extratropical, it became the first typhoon in December to threaten Japan in 13 years.{{cite news|newspaper=Japan Economic Newswire|date=December 1, 2003|title=Typhoon moving near Hachijojima Island}}{{subscription required|via=Lexis Nexis}} The storm dropped rainfall that resulted in mudslides and flight cancellations.{{cite report|author=Digital Typhoon|title=Typhoon 200321 (Lupit)|access-date=January 28, 2013|language=ja|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/dsummary.pl?id=200321&basin=wnp&lang=en}}{{cite report|author=Digital Typhoon|title=Weather Disaster Report (2003-827-29)|access-date=January 28, 2013|language=ja|url=http://agora.ex.nii.ac.jp/cgi-bin/dt/report.pl?id=2003-827-29&lang=en}}

{{clear}}

{{Infobox hurricane small

| Basin = WPac

| Image = Zigzag 2003-12-26 0450Z.jpg

| Track = 27-W 2003 track.png

| Formed = December 25

| Dissipated = December 27

| 10-min winds = 30

| 1-min winds = 35

| Pressure = 1000

}}

The final system of the year was a tropical depression that originated out of the monsoon trough on December 24 east of the Philippines. After initially moving to the west, it turned to the south, and the JTWC estimated the depression intensified into a tropical storm. During this time, PAGASA classified it as Tropical Storm Zigzag.{{cite report|publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration|title=Tropical Depression "Zigzag" (25 to 28 December 2003)|access-date=November 8, 2013|url=http://kidlat.pagasa.dost.gov.ph/cab/track325.htm|archive-url=https://web.archive.org/web/20131220113418/http://kidlat.pagasa.dost.gov.ph/cab/track325.htm|archive-date=December 20, 2013}} The system made landfall in northeastern Mindanao and dissipated on December 27, bringing heavy rainfall.

{{Clear}}

On September 5, former Hurricane Jimena crossed the International Date Line into the basin. By that time, the circulation was largely exposed from the convection, and the center quickly dissipated.

On October 5, the JMA monitored a tropical depression southeast of Taiwan that later passed near the island, producing heavy rainfall that peaked at {{convert|153|mm|in|abbr=on}} in Ilan County. On October 16, the JMA briefly classified a tropical depression to the east of the Marianas Islands.

In mid-November, the JMA briefly tracked a weak tropical depression near Wake Island. The agency also briefly tracked a tropical depression off the coast of Vietnam on December 16. It finally dissipated on December 17, with the pressure and winds unknown.

{{clear}}

Within the North-western Pacific Ocean, both the Japan Meteorological Agency (JMA) and the Philippine Atmospheric, Geophysical and Astronomical Services Administration assign names to tropical cyclones that develop in the Western Pacific, which can result in a tropical cyclone having two names.{{Cite web |title=Monthly Tropical Cyclone summary December 1999 |access-date=August 28, 2012 |url-status=live |author=Padgett, Gary |publisher=Australian Severe Weather |url=http://www.australiasevereweather.com/cyclones/2000/summ9912.htm |archive-url=https://web.archive.org/web/20120211074501/http://australiasevereweather.com/cyclones/2000/summ9912.htm |archive-date=February 11, 2012 }} The Japan Meteorological Agency's RSMC Tokyo — Typhoon Center assigns international names to tropical cyclones on behalf of the World Meteorological Organization's Typhoon Committee, should they be judged to have 10-minute sustained windspeeds of {{convert|65|km/h|mph|abbr=on}}.{{cite web |title=Typhoon Committee Operational Manual 2012 |url=http://www.wmo.int/pages/prog/www/tcp/documents/TCP-23EDITION2012.pdf |archive-url=https://web.archive.org/web/20130801020116/http://www.wmo.int/pages/prog/www/tcp/documents/TCP-23EDITION2012.pdf |publisher=World Meteorological Organization |archive-date=August 1, 2013 |pages=37–38 |date=November 21, 2012 |author=the Typhoon Committee |url-status=live }} While the Philippine Atmospheric, Geophysical and Astronomical Services Administration assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N even if the cyclone has had an international name assigned to it. The names of significant tropical cyclones are retired, by both PAGASA and the Typhoon Committee. Should the list of names for the Philippine region be exhausted then names will be taken from an auxiliary list of which the first ten are published each season. Unused names are marked in {{tcname unused}}.

{{See also|Lists of tropical cyclone names|Tropical cyclone naming}}

During the season 21 named tropical cyclones developed in the Western Pacific and were named by the Japan Meteorological Agency, when it was determined that they had become tropical storms. These names were contributed to a list of a 140 names submitted by the fourteen members nations and territories of the ESCAP/WMO Typhoon Committee. All of these names were used for the first (and only, in the cases of Yanyan, Imbudo, Koni, and Maemi) time this year.

The Philippine Atmospheric, Geophysical and Astronomical Services Administration uses its own naming scheme for tropical cyclones in their area of responsibility. PAGASA assigns names to tropical depressions that form within their area of responsibility and any tropical cyclone that might move into their area of responsibility. Should the list of names for a given year prove to be insufficient, names are taken from an auxiliary list, the first 10 of which are published each year before the season starts.

As this was the third set of a new set of names implemented by PAGASA since 2001, each of the names used in this list was utilized for the first time (and only in the cases of Batibot, Gilas, Harurot, Lakay, Manang, Niña, Pogi, Roskas, and Sikat). In the auxiliary list, the name Gening was brought from the old list. Names that were not assigned are marked in {{tcname unused}}.

{{See also|List of retired Pacific typhoon names (JMA)|List of retired Philippine typhoon names}}

Following the season, the ESCAP/WMO Typhoon Committee would retire the names Imbudo and Maemi. They would be replaced by Molave and Mujigae. Hong Kong requested the name Yanyan to also be removed from the list, and was subsequently replaced by Dolphin. Additionally, misspelled Koni had its spelling corrected to Goni.

PAGASA announced that Harurot would be retired from their naming lists due to extensive damage, and was replaced by Hanna for future seasons.

The following table provides basic meteorological and impact information for each tropical cyclone from the 2003 Pacific typhoon season in tabular format; unnamed tropical cyclones are not included. PAGASA names for storms are provided in parentheses. Storms entering from the Central Pacific only include their information while in the western Pacific, and are noted with an asterisk *.

{{Pacific areas affected (Top)}}

|-

| Yanyan || {{sort|01|January 15 – 20}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}} || bgcolor=#{{storm colour|TS}}|{{Sort|065|65 km/h (40 mph)}} || bgcolor=#{{storm colour|TS}}|{{Sort|1000|1000 hPa (29.53 inHg)}} || None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Kujira (Amang) || {{sort|02|April 10 – 25}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|165|165 km/h (105 mph)}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0930|930 hPa (27.47 inHg)}} || Micronesia, Philippines, Taiwan, Japan ||{{ntsp|230000||$}} || {{nts|3}} ||

|-

| TD || {{sort|03|May 17}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|1008 hPa (29.77 inHg)}} || Philippines ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| 03W (Batibot) || {{sort|04|May 18 – 21}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}} || Philippines ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| TD || {{sort|05|May 19}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|1008 hPa (29.77 inHg)}} || None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Chan-hom || {{sort|06|May 19 – 27}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|155|155 km/h (100 mph)}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0940|940 hPa (27.76 inHg)}} || Chuuk, Guam ||{{ntsp|16000000||$}} || {{ntsh|0}} None ||

|-

| Linfa (Chedeng) || {{sort|07|May 25 – 30}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}} || bgcolor=#{{storm colour|STS}}|{{Sort|100|100 km/h (65 mph)}} || bgcolor=#{{storm colour|STS}}|{{Sort|0980|980 hPa (28.94 inHg)}} || Philippines, Japan ||{{ntsp|28200000||$}} || {{nts|41}} ||

|-

| Nangka (Dodong) || {{sort|08|May 30 – June 3}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}} || bgcolor=#{{storm colour|STS}}|{{Sort|095|95 km/h (60 mph)}} || bgcolor=#{{storm colour|STS}}|{{Sort|0985|985 hPa (29.09 inHg)}} || Taiwan, Philippines, Japan ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Soudelor (Egay) || {{sort|09|June 12 – 19}} || bgcolor=#{{storm colour|TY}}|{{Sort|3|Strong typhoon}} || bgcolor=#{{storm colour|TY}}|{{Sort|150|150 km/h (90 mph)}} || bgcolor=#{{storm colour|TY}}|{{Sort|0955|955 hPa (28.20 inHg)}}|| Philippines, Taiwan, Japan, South Korea ||{{ntsp|15300000||$}} || {{nts|14}} ||

|-

| Falcon || {{sort|10|July 9 – 10}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55 km/h (35 mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}}|| None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Koni (Gilas) || {{sort|11|July 15 – 22}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}}|| bgcolor=#{{storm colour|STS}}|{{Sort|110|110 km/h (70 mph)}} || bgcolor=#{{storm colour|STS}}|{{Sort|0975|975 hPa (28.79 inHg)}}|| Philippines, China, Vietnam ||{{ntsp|16900000||$}} || {{nts|7}} ||

|-

| Imbudo (Harurot) || {{sort|12|July 15 – 25}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}}|| bgcolor=#{{storm colour|VSTY}}|{{Sort|165|165 km/h (105 mph)}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0935|935 hPa (27.61 inHg)}}|| Philippines, China ||{{ntsp|383000000||$}} || {{nts|85}} ||

|-

| Ineng || {{sort|13|July 30 – 31}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|045|45 km/h (30 mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}}|| Philippines ||{{ntsp|145000||$}} || {{ntsh|0}} None ||

|-

| Morakot (Juaning) || {{sort|14|July 31 – August 4}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}}|| bgcolor=#{{storm colour|TS}}|{{Sort|085|85 km/h (50 mph)}} || bgcolor=#{{storm colour|TS}}|{{Sort|0992|992 hPa (29.29 inHg)}}|| Taiwan, China ||{{ntsp|31000000||$}} || {{nts|3}} ||

|-

| TD || {{sort|15|August 2 – 6}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|1008 hPa (29.77 inHg)}} || None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Etau (Kabayan) || {{sort|16|August 2 – 9}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}}|| bgcolor=#{{storm colour|VSTY}}|{{Sort|155|155 km/h (100 mph)}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0945|945 hPa (27.91 inHg)}}|| Palau, Guam, Okinawa, Japan ||{{ntsp|294800000||$}} || {{nts|20}} ||

|-

| Krovanh (Niña) || {{sort|17|August 16 – 26}} || bgcolor=#{{storm colour|TY}}|{{Sort|3|Strong typhoon}}|| bgcolor=#{{storm colour|TY}}|{{Sort|120|120 km/h (75 mph)}} || bgcolor=#{{storm colour|TY}}|{{Sort|0970|970 hPa (28.65 inHg)}}|| Philippines, China, Vietnam ||{{ntsp|253000000||$}} || {{nts|4}} ||

|-

| TD || {{sort|18|August 17}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}} || Philippines ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Vamco (Manang) || {{sort|19|August 18 – 20}} || bgcolor=#{{storm colour|TS}}|{{Sort|1|Tropical storm}}|| bgcolor=#{{storm colour|TS}}|{{Sort|065|65 km/h (40 mph)}} || bgcolor=#{{storm colour|TS}}|{{Sort|0996|996 hPa (29.41 inHg)}}|| Philippines, Taiwan, China ||{{ntsp|4700000||$}} || {{ntsh|0}} None ||

|-

| Lakay || {{sort|20|August 18 – 20}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55 km/h (35 mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|0996|996 hPa (29.41 inHg)}}|| Philippines, Taiwan, China ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| TD || {{sort|21|August 18 – 19}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|1008 hPa (29.77 inHg)}} || None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| TD || {{sort|22|August 26 – 27}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|1008 hPa (29.77 inHg)}} || None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Dujuan (Onyok) || {{sort|23|August 27 – September 3}} || bgcolor=#{{storm colour|TY}}|{{Sort|3|Strong typhoon}}|| bgcolor=#{{storm colour|TY}}|{{Sort|150|150 km/h (90 mph)}} || bgcolor=#{{storm colour|TY}}|{{Sort|0950|950 hPa (28.05 inHg)}}|| Philippines, Okinawa, Taiwan, China ||{{ntsp|392000000||$}} || {{nts|44}} ||

|-

| TD || {{sort|24|August 31 – September 3}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|1008 hPa (29.77 inHg)}} || None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Maemi (Pogi) || {{sort|25|September 4 – 13}} || bgcolor=#{{storm colour|VITY}}|{{Sort|5|Violent typhoon}}|| bgcolor=#{{storm colour|VITY}}|{{Sort|195|195 km/h (120 mph)}} || bgcolor=#{{storm colour|VITY}}|{{Sort|0910|910 hPa (26.87 inHg)}}|| Japan, South Korea, North Korea ||{{ntsp|4100000000||$}} || {{nts|120}} ||

|-

| TD || {{sort|26|September 7 – 8}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1002|1002 hPa (29.59 inHg)}} || Vietnam ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| TD || {{sort|27|September 11 – 13}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1010|1010 hPa (29.83 inHg)}} || None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| TD || {{sort|28|September 14 – 15}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.59 inHg)}} || South China ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Quiel || {{sort|29|September 15 – 19}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}| {{Sort|055|55 km/h (35 mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|1000|1000 hPa (29.53 inHg)}}|| Philippines ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Choi-wan (Roskas) || {{sort|30|September 16 – 24}} || bgcolor=#{{storm colour|TY}}|{{Sort|3|Strong typhoon}}|| bgcolor=#{{storm colour|TY}}|{{Sort|130|130 km/h (85 mph)}} || bgcolor=#{{storm colour|TY}}|{{Sort|0955|955 hPa (28.20 inHg)}}|| Japan ||{{ntsp|2500000||$}} || {{ntsh|0}} None ||

|-

| Koppu (Sikat) || {{sort|31|September 23 – 30}} || bgcolor=#{{storm colour|TY}}|{{Sort|3|Strong typhoon}}|| bgcolor=#{{storm colour|TY}}|{{Sort|130|130 km/h (85 mph)}} || bgcolor=#{{storm colour|TY}}|{{Sort|0960|960 hPa (28.35 inHg)}}|| None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| TD || {{sort|32|October 5 – 6}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|1008 hPa (29.77 inHg)}} || Taiwan ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| 18W || {{sort|33|October 6 – 10}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55 km/h (35 mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}} || South China ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| 19W || {{sort|34|October 12 – 13}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1020|Not specified}} || South China ||{{ntsh|0}} None || 2 ||

|-

| TD || {{sort|35|October 16}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}} || None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Ketsana (Tisoy) || {{sort|36|October 17 – 26}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}}|| bgcolor=#{{storm colour|VSTY}}|{{Sort|165|165 km/h (105 mph)}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0940|940 hPa (27.76 inHg)}}|| None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| Parma || {{sort|37|October 19 – 31}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}}|| bgcolor=#{{storm colour|VSTY}}|{{Sort|175|175 km/h (110 mph)}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0930|930 hPa (27.47 inHg)}}|| None affected ||{{ntsh|0}} None || {{ntsh|0}} None ||

|-

| 23W || {{sort|38|October 21 – 23}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55 km/h (35 mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|1008|1008 hPa (29.77 inHg)}}|| Thailand ||{{sort|1|Minor}} || {{nts|1}} ||

|-

| 22W (Ursula) || {{sort|39|October 21 – 23}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55 km/h (35 mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}}|| Philippines ||{{sort|1|Minor}} || {{nts|1}} ||

|-

| Melor (Viring) || {{sort|40|October 29 – November 5}} || bgcolor=#{{storm colour|STS}}|{{Sort|2|Severe tropical storm}}|| bgcolor=#{{storm colour|STS}}|{{Sort|095|95 km/h (60 mph)}} || bgcolor=#{{storm colour|STS}}|{{Sort|0980|980 hPa (28.94 inHg)}}|| Philippines, Taiwan, Japan ||{{ntsh|0}} None || {{nts|4}} ||

|-

| Nepartak (Weng) || {{sort|41|November 11 – 19}} || bgcolor=#{{storm colour|TY}}|{{Sort|3|Strong typhoon}}|| bgcolor=#{{storm colour|TY}}|{{Sort|120|120 km/h (75 mph)}} || bgcolor=#{{storm colour|TY}}|{{Sort|0970|970 hPa (28.65 inHg)}}|| Philippines, Vietnam, China || {{ntsp|197000000||$}} || {{nts|13}} ||

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| TD || {{sort|42|November 14 – 15}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}}|| None affected ||{{ntsh|0}} None ||{{ntsh|0}} None ||

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| TD || {{sort|43|November 15}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}}|| None affected ||{{ntsh|0}} None ||{{ntsh|0}} None ||

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| Lupit (Yoyoy) || {{sort|44|November 18 – December 2}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|4|Very strong typhoon}}|| bgcolor=#{{storm colour|VSTY}}|{{Sort|185|185 km/h (115 mph)}} || bgcolor=#{{storm colour|VSTY}}|{{Sort|0915|915 hPa (27.02 inHg)}}|| Micronesia, Japan || {{ntsp|1700000||$}} || {{ntsh|0}} None ||

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| TD || {{sort|45|December 16 – 17}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|000|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|1004 hPa (29.65 inHg)}}|| None affected ||{{ntsh|0}} None ||{{ntsh|0}} None ||

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| 27W (Zigzag) || {{sort|45|December 23 – 27}} || bgcolor=#{{storm colour|TD}}|{{Sort|0|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55 km/h (35 mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|1002|1002 hPa (29.59 inHg)}}|| Philippines ||{{ntsh|0}} None ||{{ntsh|0}} None ||

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{{TC Areas affected (Bottom)|TC's=45 systems|dates=January 15 – December 27, 2003|winds=195 km/h (120 mph)|pres=910 hPa (26.87 inHg)|damage={{ntsp|6436675000||$}} |deaths=362|Refs=}}

{{Portal|Tropical cyclones}}

• Tropical cyclones in 2003
• Pacific typhoon season
• 2003 Atlantic hurricane season
• 2003 Pacific hurricane season
• 2003 North Indian Ocean cyclone season
• South-West Indian Ocean cyclone seasons: 2002–03, 2003–04
• Australian region cyclone seasons: 2002–03, 2003–04
• South Pacific cyclone seasons: 2002–03, 2003–04

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{{Reflist|group=nb}}

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{{commons category}}

• [https://www.youtube.com/watch?v=RyZdAIjPdrA Satellite movie of 2003 Pacific typhoon season]
• [http://www.jma.go.jp/en/typh/ Japan Meteorological Agency]
• [http://www.cma.gov.cn/en/ China Meteorological Agency]
• [http://www.prh.noaa.gov/guam/cyclone.php National Weather Service Guam]
• [http://www.hko.gov.hk/contente.htm Hong Kong Observatory]
• [http://www.smg.gov.mo/www/e_index.php Macau Meteorological Geophysical Services]
• [https://web.archive.org/web/20100107224630/http://web.kma.go.kr/eng/wea/wea_03_01.jsp Korea Meteorological Agency]
• [http://www.pagasa.dost.gov.ph/ Philippine Atmospheric, Geophysical and Astronomical Services Administration]
• [https://web.archive.org/web/20120525123157/http://www.cwb.gov.tw/V7e/prevent/typhoon/ty.htm Taiwan Central Weather Bureau]
• [http://www.usno.navy.mil/JTWC Joint Typhoon Warning Center] {{Webarchive|url=https://web.archive.org/web/20100301105349/http://www.usno.navy.mil/JTWC |date=March 1, 2010 }}

{{2003 Pacific typhoon season buttons}}

{{TC Decades|Year=2000|basin=Pacific|type=typhoon}}

{{Tropical cyclone season|2003}}

{{DEFAULTSORT:2003 Pacific Typhoon Season}}

Category:Pacific typhoon seasons

2003 EPac