2018 North Indian Ocean cyclone season#Cyclonic Storm Daye

{{main|Timeline of the 2018 North Indian Ocean cyclone season}}

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from:13/03/2018 till:14/03/2018 color:TD text:"ARB 01 (D)"

from:16/05/2018 till:20/05/2018 color:TS text:"Sagar (CS)"

from:21/05/2018 till:27/05/2018 color:ES text:"Mekunu (ES)"

from:29/05/2018 till:30/05/2018 color:DD text:"BOB 01 (DD)"

from:10/06/2018 till:10/06/2018 color:TD text:"LAND 01 (D)"

from:21/07/2018 till:23/07/2018 color:DD text:"LAND 02 (DD)"

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from:07/08/2018 till:08/08/2018 color:TD text:"LAND 03 (D)"

from:15/08/2018 till:17/08/2018 color:TD text:"LAND 04 (D)"

from:06/09/2018 till:07/09/2018 color:DD text:"LAND 05 (DD)"

from:19/09/2018 till:22/09/2018 color:TS text:"Daye (CS)"

from:06/10/2018 till:15/10/2018 color:VS text:"Luban (VS)"

from:08/10/2018 till:12/10/2018 color:VS text:"Titli (VS)"

barset:break

from:10/11/2018 till:19/11/2018 color:VS text:"Gaja (VS)"

from:13/12/2018 till:17/12/2018 color:ST text:"Phethai (SCS)"

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from:01/03/2018 till:31/03/2018 text:March

from:01/04/2018 till:30/04/2018 text:April

from:01/05/2018 till:31/05/2018 text:May

from:01/06/2018 till:30/06/2018 text:June

from:01/07/2018 till:31/07/2018 text:July

from:01/08/2018 till:31/08/2018 text:August

from:01/09/2018 till:30/09/2018 text:September

from:01/10/2018 till:31/10/2018 text:October

from:01/11/2018 till:30/11/2018 text:November

from:01/12/2018 till:31/12/2018 text:December

}}

File:Luban and Titli 2018-10-10 0745Z–0926Z.jpg (left) and Titli (right) over the Arabian Sea and the Bay of Bengal, respectively, on 10 October 2018. This was the first time that two simultaneous cyclones were active in the Bay of Bengal and the Arabian Sea since reliable records began in 1960.]]

The season started with ARB 01 which was formed on March 14 making one of the rarest system formed in March since tropical cyclone development stays relatively low between January and March. It caused heavy rainfall in Maldives, Lakshadweep and Kerala. After a two-month gap, another low formed near the Horn of Africa, which later became Sagar. It became unofficially the strongest cyclone to make landfall until it was broken by Gati in 2020. It caused heavy rainfall in Somaliland and local flooding was reported in the Yemeni coast. The storm made the westernmost landfall surpassing the record of Tropical Storm One. A day after Sagar dissipation, another low pressure formed off the coast of Oman which later organised into Cyclone Mekunu. It then peaked as a Category 3 tropical cyclone according to JTWC and an Extremely Severe Cyclonic Storm according to IMD. It caused 30 people dead and heavy rainfall recorded in Salalah, Oman. After that, a low pressure quickly intensified into a deep depression and peaking as a tropical storm made landfall in Myanmar causing heavy downpour. Five monsoonal depression also formed between June and September, all of them were land depressions.

Cyclogenesis continued with Cyclone Daye which made landfall in Odisha state. Heavy downpour and flood mainly in Malkangiri district and its outer bands also caused heavy rainfall in West Bengal. Following with Daye, Luban and Titli both formed in the Arabian sea and the Bay of Bengal respectively, causing heavy damages in Oman and Andhra Pradesh. Gaja on November 10, also formed and caused extensive damage in Tamil Nadu and Andaman and Nicobar Islands. The season ended with Cyclone Phethai causing agricultural damage and four dead.

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{{Infobox hurricane small

| Basin = NIO

| Image = ARB01 2018-03-15 0800Z.jpg

| Track = ARB01 2018 track.png

| Formed = March 13

| Dissipated = March 14

| 3-min winds = 25

| Pressure = 1006

}}

A trough developed near the equator in the eastern Indian Ocean on March 7. A low-pressure area formed on March 10 to the southwest of Sri Lanka, in an area with warm sea surface temperatures and low wind shear. Moving into the eastern Arabian Sea, the low organized into a depression on March 13 at the low latitude of 5° N. After its formation, the depression encountered cooler, drier air, which prevented the system from strengthening beyond an intensity of {{convert|45|km/h|mph|abbr=on|round=5}}. Moving northwest, the depression passed between the Maldives and the Lakshadweep islands, and weakened into a remnant low-pressure area on March 15.{{cite report|title=Annual Report on Cyclonic Disturbances over North Indian Ocean in 2018|date=July 2019|url=https://rsmcnewdelhi.imd.gov.in/uploads/report/27/27_60dae9_rsmc-2018.pdf|access-date=July 4, 2020|publisher=India Meteorological Department}}

Officials advised fishermen to avoid sailing off India's southwest coast for a few days.{{cite news|url=https://www.newindianexpress.com/nation/2018/mar/14/depression-over-southeast-arabian-sea-to-intensify-rainfall-anticipated-in-tamil-nadu-and-kerala-1786981.html|agency=Asian News International|title=Depression over Southeast Arabian Sea to intensify; rainfall anticipated in Tamil Nadu and Kerala|date=March 14, 2018|publisher=The New Indian Express|access-date=July 4, 2020}} The depression produced heavy rainfall across southern India. The coastal port city of Thoothukudi near the southern tip of India recorded {{convert|200|mm|in|abbr=on}} on March 13, its highest daily precipitation ever recorded. Minicoy Island in Lakshadweep received {{convert|177|mm|in|abbr=on}} of rain from the system.{{Cite news|url=https://www.business-standard.com/article/economy-policy/why-the-second-depression-in-arabian-sea-in-125-years-may-be-a-damp-squib-118031400781_1.html|title=Why the second depression in Arabian Sea in 125 years may be a damp squib|first=Abhishek|last=Waghmare|date=14 March 2018|via=Business Standard|newspaper=Business Standard India}} Heavy rainfall also occurred in Aryankavu, Kerala, and Chintamani, Karnataka.

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{{Infobox hurricane small

| Basin = NIO

| Image = Sagar 2018-05-18 1035Z.jpg

| Track = Sagar 2018 track.png

| Formed = May 16

| Dissipated = May 20

| 3-min winds = 45

| 1-min winds = 65

| Pressure = 994

}}

{{Main|Cyclone Sagar}}

A low-pressure area formed on May 14 near Socotra in the western Arabian Sea. The weather system moved northwestward, steered by a ridge to the northeast and the flow of the regional geography.{{cite web |publisher=Joint Typhoon Warning Center |title=Tropical Cyclone 01A (One) Warning NR 001 |access-date=May 19, 2018 |date=May 16, 2018 |url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805162100.htm |url-status=dead |archive-url=https://archive.today/20240522061605/https://www.webcitation.org/6zTuxtUKj?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805162100.htm |archive-date=May 22, 2024 }} On May 16, the India Meteorological Department (IMD) classified the low as a depression at 12:00 UTC about {{convert|200|km|mi|abbr=on}} northeast of Cape Guardafui, Somalia.{{cite report|publisher=India Meteorological Department|title=Cyclonic Storm "Sagar" over Arabian Sea (16 – 21 May 2018): Summary|date=May 2018|access-date=June 11, 2018|url=http://www.rsmcnewdelhi.imd.gov.in/images/pdf/publications/preliminary-report/sagar.pdf}} On the same day, the JTWC designated the depression as Tropical Cyclone 01A.{{cite report|page=82|title=2018 Annual Tropical Cyclone Report|url=https://www.metoc.navy.mil/jtwc/products/atcr/2018atcr.pdf|publisher=Joint Typhoon Warning Center|access-date=July 4, 2020}} The IMD upgraded the system to a cyclonic storm on May 17, naming it Sagar. The storm entered the Gulf of Aden that day, gradually intensifying while paralleling the coast of Yemen. Sagar developed an eye on microwave imagery, a sign of an intensifying storm.{{cite web |publisher=Joint Typhoon Warning Center |title=Tropical Cyclone 01A (One) Warning NR 003 |access-date=May 19, 2018 |date=May 17, 2018 |url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805170900.htm |url-status=dead |archive-url=https://archive.today/20240522061525/https://www.webcitation.org/6zTux43kJ?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805170900.htm |archive-date=May 22, 2024 }} Late on May 18, the IMD estimated Sagar's peak intensity at {{convert|85|km/h|mph|abbr=on|round=5}}. Around the same time, the JTWC estimated Sagar attained peak 1 minute sustained winds of {{convert|120|km/h|mph|abbr=on|round=5}}, while located about {{convert|165|km|mi|abbr=on}} south of Aden, Yemen, or about {{convert|95|km|mi|abbr=on}} north of Berbera, Somalia. Sagar weakened slightly before it made landfall near Lughaya in northwestern Somaliland, with winds of {{convert|75|km/h|mph|abbr=on|round=5}} according to the IMD. According to the JTWC, Sagar was the strongest tropical cyclone on record to strike Somalia, with estimated 1-minute landfalling winds of {{convert|95|km/h|mph|abbr=on|round=5}}. The storm also made the westernmost landfall in the North Indian Ocean, surpassing a tropical storm in 1984, which took a nearly identical track to the east.{{cite web|last1=Henson|first1=Bob|title=Sagar Pounds Somalia; New Cyclone May Threaten Oman|url=https://www.wunderground.com/cat6/sagar-pounds-somalia-new-cyclone-may-threaten-oman|publisher=Weather Underground|access-date=21 May 2018}}{{cite web|url=https://weather.com/news/news/2018-05-20-tropical-cyclone-sagar-gulf-of-aden-yemen-somalia-djibouti-impacts|title=Tropical Cyclone Sagar Leaves 16 Dead in Middle East, East Africa – The Weather Channel}} Sagar rapidly weakened over land, degenerating into a low-pressure area over eastern Ethiopia on May 20.

The cyclone first affected Socotra, and later the Yemeni mainland, producing locally heavy rainfall and flooding.{{cite web|title=Yemen Humanitarian Update Covering 15 – 21 May 2018 | date=May 21, 2018|access-date=May 27, 2018|at=ReliefWeb|work=United Nations Office for the Coordination of Humanitarian Affairs|url=https://reliefweb.int/sites/reliefweb.int/files/resources/201800521_Humanitarian_Update_Final.pdf}} High winds from Sagar contributed to a house fire near Aden, resulting in one fatality.{{cite web|title=One Dead as Tropical Cyclone Sagar Brings Life-Threatening Flood Threat to Somalia, Djibouti, Yemen|date=May 19, 2018|access-date=May 29, 2018|website=The Weather Channel|url=https://weather.com/storms/hurricane/news/2018-05-17-tropical-cyclone-sagar-gulf-of-aden-yemen-somalia-djibouti}} In parts of northern Somalia and Somaliland, Sagar dropped a years' worth of heavy rainfall, or around {{convert|200|mm|in|abbr=on}}, resulting in deadly flash flooding.{{cite report|title=OCHA Flash Update #3 – Tropical Cyclone Sagar |date=May 23, 2018|work=United Nations Office for the Coordination of Humanitarian Affairs |at=ReliefWeb|access-date=May 26, 2018|url=https://reliefweb.int/report/somalia/ocha-flash-update-3-tropical-cyclone-sagar-23-may-2018}} The floods washed out farms, livestock, boats, and houses, forcing families to evacuate.{{cite web|title=OCHA Flash Update #1|work=United Nations Office for the Coordination of Humanitarian Affairs|publisher=ReliefWeb|date=May 19, 2018|access-date=May 19, 2018|url=https://reliefweb.int/sites/reliefweb.int/files/resources/20180519_Cyclone%20Flash%20Update.pdf}} Roads, medical facilities, and other infrastructure were also damaged. Three people died in Puntland and another 50 people died in Somaliland due to Sagar.{{cite report|title=OCHA Flash Update #4 Tropical Cyclone Sagar|date=June 14, 2018|work=United Nations Office for the Coordination of Humanitarian Affairs |at=ReliefWeb|access-date=July 3, 2018|url=https://reliefweb.int/sites/reliefweb.int/files/resources/Flash%20update-Final%20v2.pdf}} In neighboring Djibouti, flooding from the storm damaged about 10,000 houses, with damage in the country estimated at US$30 million.{{Cite report|title=UNICEF Djibouti Humanitarian Situation Report, June 2018|date=June 30, 2018|work=United Nations Children Fund|at=ReliefWeb|access-date=August 7, 2018|url=https://reliefweb.int/report/djibouti/unicef-djibouti-humanitarian-situation-report-june-2018}} Two people died in the country.{{cite report|title=Djibouti: Flood Analysis and Evolution, Tropical Cyclone Sagar-18 (24 May 2018)|work=UNOSAT|at=ReliefWeb|date=May 24, 2018|access-date=May 26, 2018|url=https://reliefweb.int/map/djibouti/djibouti-flood-analysis-and-evolution-tropical-cyclone-sagar-18-24-may-2018}} In the Somali Region of eastern Ethiopia, Sagar produced strong winds and heavy rainfall, resulting in flooding and landslides. Near the border of SNNPR and Oromia, a landslide killed 23 people.{{cite report|title=Ethiopia – Floods Flash Update #3, 22 May 2018|date=May 22, 2018|work=United Nations Office for the Coordination of Humanitarian Affairs |at=ReliefWeb|access-date=May 26, 2018|url=https://reliefweb.int/report/ethiopia/ethiopia-floods-flash-update-3-22-may-2018}}{{cite report|at=ReliefWeb|work=World Vision|title=World Vision East Africa Hunger Crisis Situation Report: Ethiopia|date=June 19, 2018|access-date=July 3, 2018|url=https://reliefweb.int/sites/reliefweb.int/files/resources/Ethiopia-May2018-final.pdf}}

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{{Infobox hurricane small

| Basin = NIO

| Image = Mekunu 2018-05-25 0947Z.jpg

| Track = Mekunu 2018 track.png

| Formed = May 21

| Dissipated = May 27

| 3-min winds = 95

| 1-min winds = 100

| Pressure = 960

}}

{{Main|Cyclone Mekunu}}

An area of convection developed to the northwest of the Maldives on May 18.{{cite web|title=Significant Tropical Weather Advisory for the Indian Ocean: 18 May 2018, 1800Z|url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201805181800.htm|archive-url=https://archive.today/20240522041632/https://www.webcitation.org/6zWoW8BLm?url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201805181800.htm|url-status=dead|archive-date=22 May 2024|publisher=National Oceanic and Atmospheric Administration|access-date=25 May 2018}} Over the next two days, it became better organized and the IMD reported that it had developed into a low-pressure area on May 20, giving it the identifier ARB 03.{{cite web|title=Informatory Message: 01 (ARB 03/2018)|url=http://gwydir.demon.co.uk/advisories/INDIAN_201805200800.pdf|archive-url=https://www.webcitation.org/6zYhYgK5C?url=http://gwydir.demon.co.uk/advisories/INDIAN_201805200800.pdf|url-status=dead|archive-date=20 May 2018|publisher=India Meteorological Department|access-date=25 May 2018}} The system slowly drifted northwestwards into favorable environment for tropical cyclogenesis and developed good outflow.{{cite web|title=Significant Tropical Weather Advisory For The Indian Ocean Reissued: 21 May 2018, 0400Z|url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201805210400.htm|archive-url=https://archive.today/20240522041150/https://www.webcitation.org/6za6XVJaq?url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201805210400.htm|url-status=dead|archive-date=22 May 2024|publisher=National Oceanic and Atmospheric Administration|access-date=25 May 2018}} The JTWC issued a TCFA on May 21 after convective bands began to wrap into the broad low-level circulation center (LLCC).{{cite web|title=Tropical Cyclone Formation Alert|url=http://gwydir.demon.co.uk/advisories/WTIO21-PGTW_201805211400.htm|archive-url=https://archive.today/20240522120820/https://www.webcitation.org/6zbVHktwU?url=http://gwydir.demon.co.uk/advisories/WTIO21-PGTW_201805211400.htm|url-status=dead|archive-date=22 May 2024|publisher=Joint Typhoon Warning Center|access-date=25 May 2018}} Around the same time, the IMD had announced that the system intensified into a depression.{{cite web|title=Bulletin No. : 01 (ARB 03/2018)|url=http://gwydir.demon.co.uk/advisories/INDIAN_201805211500.pdf|archive-url=https://www.webcitation.org/6zbWlufeO?url=http://gwydir.demon.co.uk/advisories/INDIAN_201805211500.pdf|url-status=dead|archive-date=22 May 2018|publisher=India Meteorological Department|access-date=25 May 2018}} Over the next 24 hours, the depression continued to drift further northwestwards into warm waters and faced low vertical wind shear. As a result, it continued to intensify and the JTWC began tracking it as a tropical storm.{{cite web|title=Tropical Cyclone 02A (Two) Warning Nr 001|url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805220300.htm|archive-url=https://archive.today/20240522041230/https://www.webcitation.org/6zbVQLGbA?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805220300.htm|url-status=dead|archive-date=22 May 2024|publisher=Joint Typhoon Warning Center|access-date=25 May 2018}} Subsequently, the IMD upgraded it to a deep depression{{cite web|title=Deep Depression ARB 03: Bulletin 04|url=http://gwydir.demon.co.uk/advisories/INDIAN_201805220600.pdf|archive-url=https://www.webcitation.org/6zbWbesyi?url=http://gwydir.demon.co.uk/advisories/INDIAN_201805220600.pdf|url-status=dead|archive-date=22 May 2018|publisher=India Meteorological Department|access-date=25 May 2018}} and Cyclonic Storm Mekunu later the same day.{{cite web|title=Cyclonic Storm Mekunu: Bulletin 07|url=http://gwydir.demon.co.uk/advisories/INDIAN_201805221500.pdf|archive-url=https://www.webcitation.org/6zdDzqIa6?url=http://gwydir.demon.co.uk/advisories/INDIAN_201805221500.pdf|url-status=dead|archive-date=23 May 2018|publisher=India Meteorological Department|access-date=25 May 2018}} Multi-spectral satellite imagery revealed that Mekunu had developed an eye as early as May 23,{{cite web|title=Tropical Cyclone 02A (Mekunu) Warning Nr 006|url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805230900.htm|archive-url=https://archive.today/20240522041311/https://www.webcitation.org/6zdDl8gE6?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805230900.htm|url-status=dead|archive-date=22 May 2024|publisher=Joint Typhoon Warning Center|access-date=25 May 2018}} at which time the IMD upgraded it to a severe cyclonic storm.{{cite web|title=Severe Cyclonic Storm Mekunu: Bulletin 12|url=http://gwydir.demon.co.uk/advisories/INDIAN_201805230600.pdf|archive-url=https://www.webcitation.org/6zdDsFyzx?url=http://gwydir.demon.co.uk/advisories/INDIAN_201805230600.pdf|url-status=dead|archive-date=23 May 2018|publisher=India Meteorological Department|access-date=25 May 2018}} Benefiting from favorable environmental conditions, the cyclone became more symmetric,{{cite web|title=Tropical Cyclone 02A (Mekunu) Warning Nr 007|url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805231500.htm|archive-url=https://archive.today/20240522121221/https://www.webcitation.org/6zedEpE6a?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805231500.htm|url-status=dead|archive-date=22 May 2024|publisher=Joint Typhoon Warning Center|access-date=25 May 2018}} intensifying into a very severe cyclonic storm six hours later.{{cite web|title=Very Severe Cyclonic Storm Mekunu: Bulletin 14|url=http://gwydir.demon.co.uk/advisories/INDIAN_201805231200.pdf|archive-url=https://www.webcitation.org/6zdDpv15T?url=http://gwydir.demon.co.uk/advisories/INDIAN_201805231200.pdf|url-status=dead|archive-date=23 May 2018|publisher=India Meteorological Department|access-date=25 May 2018}} The cyclone continued to track northwestward under the influence of a subtropical ridge.{{cite web|title=Tropical Cyclone 02A (Mekunu) Warning Nr 014|url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805250900.htm|archive-url=https://archive.today/20240522121302/https://www.webcitation.org/6zgEIryeQ?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201805250900.htm|url-status=dead|archive-date=22 May 2024|publisher=Joint Typhoon Warning Center|access-date=25 May 2018}} On May 25, it reached its peak intensity as an extremely severe cyclonic storm, with the JTWC estimating peak 1-minute sustained winds of {{convert|185|km/h|mph|abbr=on|round=5}}, equivalent to a Category 3 storm on the Saffir–Simpson scale.

Under the influence of Mekunu, Socotra received widespread rainfall leading to flash flooding and downed power lines. At least 40 people were initially reported to be missing after two ships were capsized off Socotra.{{cite web|title=In case you missed it: Deadly Cyclone Mekunu slams Socotra; Sinkhole opens on White House lawn|url=https://www.accuweather.com/en/weather-news/in-case-you-missed-it-deadly-cyclone-mekunu-devastates-socotra-sinkhole-opens-on-white-house-lawn/70005042|publisher=AccuWeather|access-date=25 May 2018|archive-url=https://web.archive.org/web/20180526041125/https://www.accuweather.com/en/weather-news/in-case-you-missed-it-deadly-cyclone-mekunu-devastates-socotra-sinkhole-opens-on-white-house-lawn/70005042|archive-date=26 May 2018|url-status=dead}} Mekunu made landfall on the Omani coast near the city of Salalah at peak intensity. Gusts of {{convert|67|mph|abbr=on}} were recorded at the Salalah Airport before the landfall while areas in the Salalah recorded rainfall of {{convert|194|mm|abbr=on}}.{{cite web|title=Tropical Cyclone Mekunu Making Historic Category 3 Landfall Near Salalah, Oman With Life-Threatening Flooding, Destructive Winds, Storm Surge|url=https://weather.com/storms/hurricane/news/2018-05-23-tropical-cyclone-mekunu-oman-yemen-arabian-sea|publisher=The Weather Channel|access-date=25 May 2018}} As of 31 May, at least 30 people have died in Oman and Yemen due to Mekunu, including 20 on Socotra, four in Yemen,{{cite web |title=Yemen: Cyclone Mekunu – Information bulletin No.2 |url=https://reliefweb.int/report/yemen/yemen-cyclone-mekunu-information-bulletin-no2 |website=ReliefWeb |publisher=International Federation of Red Cross And Red Crescent Societies |access-date=1 June 2018}} and six in Oman.{{cite web|last1=Gambrell|first1=Jon|title=Cyclone death toll in Oman, Yemen rises to at least 13|url=http://www.whec.com/national/oman-raises-death-toll-in-aftermath-of-cyclone-mekunu-to-6/4926039/?cat=10049|website=WHEC News|agency=The Associated Press|access-date=28 May 2018|archive-url=https://web.archive.org/web/20180528220032/http://www.whec.com/national/oman-raises-death-toll-in-aftermath-of-cyclone-mekunu-to-6/4926039/?cat=10049|archive-date=28 May 2018|url-status=dead}} Insurance claims in Oman reached ﷼108 million (US$281 million).{{cite news|newspaper=Times of Oman|title=OMR108 million insurance claims from Mekunu loss|date=7 August 2018|access-date=8 November 2018|url=https://timesofoman.com/article/139481}}{{cite web|title=OMR to USD Rates on 5/25/2018|publisher=Exchange Rates|access-date=5 July 2018|url=https://www.exchange-rates.org/Rate/OMR/USD/5-25-2018}}

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = BOB01 2018-05-29 0745Z.jpg

| Track = BOB01 2018 track.png

| Formed = May 29

| Dissipated = May 30

| 3-min winds = 30

| 1-min winds = 45

| Pressure = 992

}}

On May 28, a low-pressure area formed over the eastern Bay of Bengal, three days after the IMD first mentioned such a possibility. That day, the JTWC noted a low chance for development, before raising it to a medium chance. The system moved northeastward and organized, becoming a depression at 06:00 UTC on May 29. With warm waters and low wind shear, the system strengthened further. The IMD upgraded the system to a deep depression at 12:00 UTC on May 29, estimating peak winds of {{convert|55|km/h|mph|abbr=on|round=5}}. The JTWC meanwhile estimated peak winds of {{convert|85|km/h|mph|abbr=on|round=5}}, designating the system as Tropical Cyclone 03B; however, the agency did not issue any advisories on the cyclone in real time. Late on May 29, the deep depression moved ashore northern Myanmar near Kyaukphyu, and it rapidly weakened over land, degenerating into a low on May 30.

While in its formative stages, the depression brought heavy rainfall to the Andaman and Nicobar Islands, with a peak daily total of {{convert|230|mm|in|abbr=on}} recorded in Port Blair. The storm later brought heavy rainfall to northeast India. Ahead of the depression's landfall, Myanmar's Meteorology and Hydrology Department issued a red-code emergency alert warning.{{cite news|agency=Xinhua|date=May 30, 2018|url=http://www.xinhuanet.com/english/2018-05/30/c_137216099.htm|archive-url=https://web.archive.org/web/20180530040828/http://www.xinhuanet.com/english/2018-05/30/c_137216099.htm|url-status=dead|archive-date=May 30, 2018|title=Red alert cyclone warning issued for Rakhine state, Myanmar|access-date=January 30, 2021}} High winds and heavy rains destroyed more than 500 homes in the Yangon region, with shelters opened for residents left homeless. The strong wind knocked down trees, cutting power supply in areas.{{cite news|url=http://www.xinhuanet.com/english/2018-05/30/c_137217240.htm|archive-url=https://web.archive.org/web/20180530070549/http://www.xinhuanet.com/english/2018-05/30/c_137217240.htm|url-status=dead|archive-date=May 30, 2018|title=Strong wind destroys over 500 houses in Myanmar's Yangon region|date=May 30, 2018|access-date=January 30, 2021|agency=Xinhua}}

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = BOB02 2018-06-10 0650Z.jpg

| Track = BOB02 2018 track.png

| Formed = June 10

| Dissipated = June 10

| 3-min winds = 25

| Pressure = 988

}}

A monsoonal low formed in the northern Bay of Bengal on June 8, which was anticipated by the IMD as early as June 3. Low wind shear and warm waters fueled development as the system moved to the north-northwest. On June 10, the system organized into a depression near the coastline of Bangladesh, with peak winds of {{convert|45|km/h|mph|abbr=on|round=5}}. A few hours after its formation, the depression moved ashore the country south of Feni. Due to land interaction, the system weakened into a low at 00:00 UTC on June 11.

The depression brought heavy rainfall to Bangladesh and across eastern India. Sabroom in northeastern India recorded {{convert|440|mm|in|abbr=on}} of rainfall over two days. In Bangladesh, two-day rainfall totals reached {{convert|150|mm|in|abbr=on}}, causing flooding and landslides.{{cite news |agency=United News of Bangladesh|title=Cattogram city sees severe waterlogging with rains|date=June 11, 2018|access-date=January 30, 2021|archive-url=https://web.archive.org/web/20190226044240/http://old.unb.com.bd/bangladesh-news/Cattogram-city-sees-severe-waterlogging-with-rains-%C2%A0/72948|archive-date=February 26, 2019|url=http://old.unb.com.bd/bangladesh-news/Cattogram-city-sees-severe-waterlogging-with-rains-%C2%A0/72948}} The flooding closed some roads and forced more than 29,000 people to be evacuated. At least 12 people died related to the floods, including two people in Rohingya refugee camps in southeastern Bangladesh. Nearly 900 refugee camps were damaged, along with 200 latrines, two health facilities, and two food distribution centers.{{cite report|title=Bangladesh – Severe Weather (DG ECHO, IOM, Bangladesh Meteorological Department, FFWC)|date=June 12, 2018|work=European Commission's Directorate-General for European Civil Protection and Humanitarian Aid Operations|at=ReliefWeb|access-date=January 30, 2021|url=https://reliefweb.int/report/bangladesh/bangladesh-severe-weather-dg-echo-iom-bangladesh-meteorological-department-ffwc}}{{cite report|title=Bangladesh – Floods and Landslides (DG ECHO, BMD, Disaster Management and Relief Ministry Bangladesh, Local Media)|date=June 13, 2018|work=European Commission's Directorate-General for European Civil Protection and Humanitarian Aid Operations|at=ReliefWeb|access-date=January 30, 2021|url=https://reliefweb.int/report/bangladesh/bangladesh-floods-and-landslides-dg-echo-bmd-disaster-management-and-relief}}{{cite report|title=Powerful monsoon rains hit Rohingya refugee camps, raising risks for thousands of children|at=ReliefWeb|work=UNICEF|access-date=January 30, 2021|date=June 14, 2018|url=https://reliefweb.int/report/bangladesh/powerful-monsoon-rains-hit-rohingya-refugee-camps-raising-risks-thousands-children}} Heavy rains also caused flooding in the port city of Chittagong.

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = BOB 03 2018-07-21 0800Z.jpg

| Track = BOB03 2018 track.png

| Formed = July 21

| Dissipated = July 23

| 3-min winds = 25

| Pressure = 988

}}

A monsoonal low formed on July 19 in the northern Bay of Bengal. With favorable conditions such as warm water temperatures, the system gradually organized, becoming a depression on July 21 just off the coast of eastern India. The system only attained peak winds of {{convert|45|km/h|mph|abbr=on|round=5}}, as it soon after moved ashore the Indian coastline near the borders of Odisha and West Bengal. Continuing to the northwest, the depression maintained a flow of moisture that helped sustain its intensity for 36 hours over land, before the system weakened into a low on July 23 over Jharkhand. The depression dropped torrential rainfall over eastern India, reaching as far west as Rajasthan. The highest 24 hour total was {{convert|620|mm|in|abbr=on}} in Burla in Odisha, resulting in flooding. Flood-related incidents killed five people in Odisha.{{cite report|work=Government of India|url=https://reliefweb.int/report/india/rain-lashes-several-parts-country|at=ReliefWeb|access-date=January 31, 2021|date=July 23, 2018|title=Rain lashes several parts of the country}}{{cite report|work=Government of India|url=https://reliefweb.int/report/india/heavy-rain-thundershowers-witnessed-across-country|at=ReliefWeb|access-date=January 31, 2021|date=July 24, 2018|title=Heavy Rain, Thundershowers witnessed across the country}}

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = BOB 04 2018-08-07 0705Z.jpg

| Track = BOB04 2018 track.png

| Formed = August 7

| Dissipated = August 8

| 3-min winds = 25

| Pressure = 992

}}

A monsoonal low formed in the northwestern Bay of Bengal on August 6. With low wind shear and high water temperatures, the system quickly organized into a depression by August 7, located a short distance off eastern India. The system soon after moved ashore near the border of Odisha and West Bengal, failing to intensify beyond winds of {{convert|45|km/h|mph|abbr=on|round=5}}. The depression moved across northern Odisha and weakened into a low on August 8 over Chhattisgarh. Heavy rainfall accompanied the depression across India, reaching as far west as Rajasthan. The highest 24 hour rainfall total was {{convert|390|mm|in|abbr=on}} in Puri.

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = BOB 05 2018-08-16 0740Z.jpg

| Track = BOB05 2018 track.png

| Formed = August 15

| Dissipated = August 17

| 3-min winds = 25

| Pressure = 993

}}

On August 13, a low formed in the northwestern Bay of Bengal from a circulation that was present for the prior four days. The system organized as it moved west-northwestward toward the Indian coastline, becoming a depression on August 15 near the coastline of Odisha, with winds of {{convert|45|km/h|mph|abbr=on|round=5}}. The depression progressed across central India, weakening into a low on August 17 over Madhya Pradesh. Along its path, the depression dropped heavy rainfall, with a peak 24 hour total of {{convert|400|mm|in|abbr=on}} in Bhopalpatnam in Chhattisgarh state. In Odisha, the heavy rainfall prompted the cancelation of Independence Day activities at schools.{{cite news|newspaper=The Economic Times|title=Heavy rain alert issued for many states|date=August 17, 2018|access-date=January 31, 2021|url=https://economictimes.indiatimes.com/news/politics-and-nation/heavy-rain-alert-issued-for-many-states/articleshow/65420173.cms?from=mdr}}

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = BOB 06 2018-09-06 0735Z.jpg

| Track = BOB06 2018 track.png

| Formed = September 6

| Dissipated = September 7

| 3-min winds = 30

| Pressure = 990

}}

A low-pressure area formed in the northern Bay of Bengal on September 5. With low wind shear and high water temperatures, the system organized further, becoming a depression on September 6, just off the coast of West Bengal. The depression quickly intensified into a deep depression, reaching winds of {{convert|55|km/h|mph|abbr=on|round=5}} before moving onshore eastern India. Continuing westward, the deep depression moved across northern Odisha and weakened, degenerating into a low over Chhattisgarh on September 7. The low continued across India and dissipated over Rajasthan. Throughout much of India, the deep depression brought heavy rainfall, with a peak 24 hour precipitation total of {{convert|410|mm|in|abbr=on}} in Paradeep, Odisha.

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = Daye 2018-09-21 0505Z.jpg

| Track = Daye 2018 track.png

| Formed = September 19

| Dissipated = September 22

| 3-min winds = 35

| 1-min winds = 35

| Pressure = 992

}}

On September 19, a depression formed over the east central Bay of Bengal, receiving the designation BOB 07. Soon afterward, the JTWC has issued a Tropical Cyclone Formation Alert (TCFA). Early on September 20, the storm intensified into a deep depression over the west central Bay of Bengal. The system intensified further, becoming Cyclonic Storm Daye later that day, while situated over the northwestern Bay of Bengal. The name Daye was suggested by Myanmar, but there is no specific meaning in the Burmese language. Early on September 21, Daye made landfall on south Odisha, also impacting the adjoining north Andhra Pradesh coast near Gopalpur, during the morning, local time, resulting in heavy rains and strong winds of 65 to 75 km/h in various districts in the regions. Upon its landfall, Daye brought heavy to very heavy rainfall in various districts of Odisha. Following landfall, Daye weakened into a depression. Over the next two days, Daye continued moving westward, while dropping heavy amounts of rain across India. On September 22, Daye weakened into a well-marked low, with the IMD issuing its final advisory on the system.

Prior to the cyclone's landfall at midnight, local time, on September 21, the government of Odisha deployed emergency teams in Malkangiri, with more teams on standby in Rayagada, Gajapati, and Puri. One NDRF team had each been deployed in Kalahandi, Rayagada, Gajapati, Puri, Nayagarh, and Kandhamal districts, with 17 boats and other emergency equipment. Local cautionary Signal Number LC-III had been kept hoisted at all ports of Odisha when the cyclone was a deep depression.

Malkangiri was worst affected, with many houses submerged. Several parts of outer Malkangiri city and rural areas of the district reportedly received heavy cyclonic rains. Several houses had submerged into water, leaving many people homeless. According to reports, a maximum rainfall total of 284 mm was recorded at Malkangiri by the India Meteorological department (IMD). In Balasore District, the water was flowing above the danger level in the Jalaka River. Water level increased in the Kolab Dam and two gates were opened.

The outer rainbands of the storm dropped extremely heavy rain in the southern parts of West Bengal. Digha recorded 229 mm of rain, Contai received 331 mm of rain, Diamond Harbour recorded 66 mm of rain, Midnapore received 79 mm of rain, and Halisahar recorded 51 mm of rain. Torrential rains and flash floods were also reported in Himachal Pradesh, Uttarakhand, and Punjab, resulting in at least 25 deaths. The floodgates of the famous Sukhna Lake in Chandigarh were opened, for the first time in 10 years.

As Daye weakened into a low-pressure area, the storm interacted with another western disturbance to the north, leading to widespread rainfall in the northern Himalayas and the plains to the south, from September 22–24. Delhi received heavy rains between September 22–24 totaling 58.6 mm, resulting in severe waterlogging. Maximum temperatures in Delhi were up to 6 Degrees Celsius below normal. Amritsar in Punjab received large amounts of rainfall ending early on September 24, with a total of 203.0 mm, while Karnal in Haryana received one of its highest 24-hour rainfall totals in September, with a total of 142.0 mm.

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = Luban 2018-10-10 0926Z.jpg

| Track = Luban 2018 track.png

| Formed = October 6

| Dissipated = October 15

| 3-min winds = 75

| 1-min winds = 85

| Pressure = 978

}}

{{Main|Cyclone Luban}}

{{citation needed span|Very Severe Cyclonic Storm Luban was the third tropical cyclone to affect the Arabian Peninsula during the 2018 North Indian Ocean cyclone season, after cyclones Sagar and Mekunu in May. Luban developed on October 6 in the central Arabian Sea, and for much of its duration, maintained a general west-northwestward trajectory. On October 10, the India Meteorological Department (IMD) upgraded Luban to a very severe cyclonic storm – equivalent to a Category 2 hurricane – and estimated maximum sustained winds of 155 km/h (100 mph).|date=August 2021}} On October 14, Cyclonic Storm Luban struck Yemen in the midst of a civil war and a cholera outbreak.{{cite report|date=October 16, 2018|title=Global Emergency Overview Weekly Picks, 16 October 2018|work=Assessment Capacities Project|at=ReliefWeb|access-date=October 22, 2018|url=https://reliefweb.int/report/world/global-emergency-overview-weekly-picks-16-october-2018}} The storm quickly weakened over the dry, mountainous terrain of the Arabian Peninsula, before dissipating on October 15.{{citation needed|date=August 2021}}

Upon moving ashore, Cyclone Luban produced flooding rains in Somalia, Oman, and Yemen.{{citation needed|date=August 2021}} Luban forced 2,203 families to leave their houses, utilizing 38 schools for shelter. The storm killed 14 people in the country, and injured another 124 people, with 10 people still being missing.{{cite report|title=Yemen: Cyclone Luban Flash Update #3 (21 October 2018) |date=October 21, 2018|url=https://reliefweb.int/sites/reliefweb.int/files/resources/Cyclone%20Luabn%20Flash%20Update%203.pdf|work=United Nations Office for the Coordination of Humanitarian Affairs|at=ReliefWeb|access-date=October 22, 2018}}{{cite news|title=Yemen says 14 killed in Cyclone Luban|access-date=October 30, 2018|url=https://www.apnews.com/705065c5517545adae9e4fb313bb8381|newspaper=Associated Press|date=October 28, 2018}} {{citation needed span|Heavy rainfall cut off villages and damaged roads. Damage in the country was estimated at US$1 billion.{{#tag:ref|All damage totals are in 2018 United States dollars unless otherwise noted.|group="nb"}} In Oman, desert rainfall caused a small locust outbreak. Luban coexisted with Cyclone Titli in the Bay of Bengal, marking the first time since 1977 that two storms of such intensity were active at the same time in the North Indian Ocean.|date=August 2021}}

{{Infobox hurricane small

| Basin = NIO

| Image = Titli 2018-10-10 0745Z.jpg

| Track = Titli 2018 track.png

| Formed = October 8

| Dissipated = October 12

| 3-min winds = 80

| 1-min winds = 105

| Pressure = 972

}}

{{main article|Cyclone Titli}}

{{citation needed span|On October 6, a low-pressure area formed in the Andaman Sea. Over the next two days, the disaster entered the Bay of Bengal and became a depression on October 8, receiving the designation BOB 08 from the IMD. Afterward, the storm rapidly strengthened, becoming a Very Severe Cyclonic Storm on October 9, with the strength of a Category 3 major hurricane on the Saffir–Simpson scale (SSHWS).|date=September 2021}}

{{citation needed span|Between 4:30 a.m. and 5:30 a.m. IST on October 11 (23:00–00:00 UTC on October 10–11), Titli made landfall near Palasa, Andhra Pradesh, at peak intensity.|date=September 2021}}

Titli killed at least 77 people in Odisha and left a couple of others missing, due to heavy flooding and landslides,{{cite news|url=http://www.orissapost.com/odisha-reports-77-deaths-in-cyclone-titli/|title=Titli toll 77; missing cases under lens|publisher=Orissa Post|date=October 24, 2018|access-date=October 25, 2018}} and caused another 8 deaths in Andhra Pradesh.{{cite news|author=Stela Dey|url=https://www.ndtv.com/india-news/cyclone-titli-live-updates-storm-makes-landfall-near-gopalpur-in-odisha-1930154|title=Cyclone Titli Live Highlights: 8 Dead In Andhra Pradesh, Bus Services Suspended|publisher=NDTV|date=October 11, 2018|access-date=October 15, 2018}} The storm weakened into a depression before entering West Bengal, wreaking havoc in some parts of South Bengal, and bringing torrential rain and gale-force wind.{{Cite web|date=2018-10-20|title=Cyclone Titli death toll rises to 62 in Odisha|url=https://odishatv.in/odisha-news/cyclone-titli-death-toll-rises-to-61-in-odisha-328352|access-date=2020-08-21|website=Odisha Television Ltd.}} Damage from flooding caused by Titli totaled at ₹3,673.1 crore (US$507 million) in Andhra Pradesh,{{cite news|url=https://www.aninews.in/news/national/general-news/chandrababu-naidu-urges-fast-release-of-aid-to-rehabilitate-titli-victims201810261852400001/|title=Chandrababu Naidu urges fast release of aid to rehabilitate Titli victims|publisher=ANI|date=October 26, 2018|access-date=October 27, 2018|archive-date=October 26, 2018|archive-url=https://web.archive.org/web/20181026162050/https://www.aninews.in/news/national/general-news/chandrababu-naidu-urges-fast-release-of-aid-to-rehabilitate-titli-victims201810261852400001/|url-status=dead}} and ₹3,000 crore (US$413 million) in Odisha.{{cite news|author=V Kamalakara Rao|url=https://timesofindia.indiatimes.com/city/visakhapatnam/support-dries-up-for-srikakulam-odisha-after-charity-blitz-in-kerala/articleshow/66338573.cms|title=Support dries up for Srikakulam, Odisha after charity blitz in Kerala|work=Times of India|date=October 24, 2018|access-date=October 25, 2018}} The storm also caused serious damage to the East Coast railway.

Titli also killed four people in Bangladesh due to landslides.{{cite news|url=https://bdnews24.com/bangladesh/2018/10/10/bangladesh-shuts-river-transports-as-cyclone-titli-intensifies|date=October 14, 2018|accessdate=February 4, 2022|title=Landslides kill four in Chattogram}}

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = Gaja 2018-11-15 0515Z.jpg

| Track = Gaja 2018 track.png

| Formed = November 10

| Dissipated = November 19

| 3-min winds = 70

| 1-min winds = 80

| Pressure = 976

}}

{{Main|Cyclone Gaja}}

{{citation needed span|On November 5, a low-pressure system formed over the Gulf of Thailand. The system crossed through Southern Thailand and the Malay Peninsula on November 8. On the next day, it crossed into the Andaman Sea and lingered there, organizing further throughout the day, before intensifying into a depression over the Bay of Bengal on November 10, with the IMD designating the system as Depression BOB 09. Soon afterward, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert (TCFA) on the system. At 00:00 UTC on November 11, the deep depression strengthened into a cyclonic storm, and was named Gaja. After tracking west-southwestward for a number of days, it made landfall in Tamil Nadu, on November 16. The storm survived crossing over into the Arabian Sea later that day; however, it degenerated into a remnant low in hostile conditions only several days later, on November 20. On the next day, the storm's remnants dissipated near Socotra.|date=September 2021}}

In India, 52 people were killed by the storm.{{cite news|author=Dennis S. Jesudasan

|url=https://www.thehindu.com/todays-paper/tp-national/tp-tamilnadu/cyclone-death-toll-revised-from-63-to-52/article25714368.ece|title=Cyclone death toll revised from 63 to 52|work=The Hindu|date=December 11, 2018|access-date=December 11, 2018}} Damage nationwide was about ₹5,400 crore (US$775 million).{{cite web|title=Global Catastrophe Recap November 2018|url=http://thoughtleadership.aonbenfield.com/Documents/20181206-ab-analytics-if-nov-global-recap.pdf|date=December 6, 2018|access-date=December 7, 2018|archive-date=December 9, 2018|archive-url=https://web.archive.org/web/20181209123628/http://thoughtleadership.aonbenfield.com/Documents/20181206-ab-analytics-if-nov-global-recap.pdf|url-status=dead}}

{{clear}}

{{Infobox hurricane small

| Basin = NIO

| Image = Phethai 2018-12-15 0740Z.jpg

| Track = Phethai 2018 track.png

| Formed = December 13

| Dissipated = December 17

| 3-min winds = 55

| 1-min winds = 55

| Pressure = 992

}}

{{main|Cyclone Phethai}}

{{citation needed span|An area of convection developed in the southern Bay of Bengal on December 13. The disturbance was forecasted having little chance to develop; however, the storm's convection persisted and organized, resulting in the storm being classified as Depression BOB 10. The depression gradually organized and intensified into a deep depression on December 14. Within 24 hours, the deep depression attained 3-minute sustained winds of 40 mph, and the storm was named Phethai. Phethai steadily strengthened and on December 16, Phethai peaked with 65 mph winds and at severe cyclonic storm status. The storm steadily weakened and made landfall at Katrenikona on December 17, with 3-minute sustained winds of 50 mph. Phethai rapidly weakened as it traversed Andhra Pradesh, and finally dissipated over a tropical rainforest south west of Kolkata.|date=February 2021}}

Eight people were reported dead after Phethai,{{cite AV media|url=https://www.youtube.com/watch?v=KV0d27JcCbw|title=Cyclone Phethai: 8 Died After Storm Makes Landfall, NDRF Team On Rescue & Road Clearance|medium=video|publisher=Kanak News|date=December 17, 2018|accessdate=December 18, 2018}} and the agricultural damage in Andhra Pradesh was estimated at ₹294.54 crore (US$41.1 million).{{cite news|author=MN Samdani|url=https://timesofindia.indiatimes.com/city/amaravati/crop-loss-worth-rs-243-crore-reported-due-to-cyclone-phethai-andhra-minister/articleshow/67164856.cms|title=Crop loss worth Rs 243 crore reported due to cyclone Phethai: Andhra minister|work=Times of India|date=December 19, 2018|access-date=December 20, 2018}}{{cite news|author=MN Samdani|url=https://www.newindianexpress.com/states/andhra-pradesh/2018/dec/18/cyclone-causes-rs-51-crore-crop-loss-in-godavari-krishna--deltas-1913026.html|title=Cyclone Phethai causes Rs 51-crore crop loss in Godavari, Krishna deltas|publisher=The New Indian Express|date=December 18, 2018|access-date=December 19, 2018}}

{{clear}}

Within this basin, a tropical cyclone is assigned a name when it is judged to have reached Cyclonic Storm intensity, with winds of {{convert|65|km/h|mph|abbr=on|round=5}}. The names were selected by members of the ESCAP/WMO panel on Tropical Cyclones between 2000 and May 2004, before the Regional Specialized Meteorological Center in New Delhi started to assign names in September 2004. There is no retirement of tropical cyclone names in this basin, as the list of names is only scheduled to be used once before a new list of names is drawn up. Should a named tropical cyclone move into the basin from the Western Pacific, then it will retain its original name. The next eight available names from the List of North Indian Ocean storm names are below.

This is a table of all storms in the 2018 North Indian Ocean cyclone season. It mentions all of the season's storms and their names, duration, peak intensities (according to the IMD storm scale), damage, and death totals. Damage and death totals include the damage and deaths caused when that storm was a precursor wave or extratropical low, and all of the damage figures are in 2018 USD.

{{North Indian Ocean areas affected (Top)}}

|-

| ARB 01 || {{Sort|01|March 13–14}} || bgcolor=#{{storm colour|D}}|{{Sort|1|Depression}} || bgcolor=#{{storm colour|D}}|{{Sort|045|{{convert|45|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|D}}|{{sort|1006|{{convert|1006|hPa|inHg|sigfig=4|abbr=on}}}} || South India, Maldives || None || None ||

|-

| Sagar || {{Sort|02|May 16–20}} || bgcolor=#{{storm colour|CS}}|{{Sort|3|Cyclonic storm}} || bgcolor=#{{storm colour|CS}}|{{Sort|085|{{convert|85|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|CS}}|{{sort|0994|{{convert|994|hPa|inHg|sigfig=4|abbr=on}}}} || Yemen, Horn of Africa || {{ntsp|30000000||$}} || 79 ||{{cite report|title=Humanitarian Bulletin Somalia, 1 May - 3 June 2018|date=June 3, 2018|work=United Nations Office for the Coordination of Humanitarian Affairs |at=ReliefWeb|access-date=June 3, 2018|url=https://reliefweb.int/sites/reliefweb.int/files/resources/May%20Bulletin%20-%20Final%20Draft1%20JB.pdf}}{{cite report|at=ReliefWeb|work=World Vision|title=World Vision East Africa Hunger Crisis Situation Report: Ethiopia|date=June 19, 2018|access-date=July 3, 2018|url=https://reliefweb.int/sites/reliefweb.int/files/resources/Ethiopia-May2018-final.pdf}}{{Cite report|title=UNICEF Djibouti Humanitarian Situation Report, June 2018|date=June 30, 2018|work=United Nations Children Fund|at=ReliefWeb|access-date=August 7, 2018|url=https://reliefweb.int/report/djibouti/unicef-djibouti-humanitarian-situation-report-june-2018}}

|-

| Mekunu || {{Sort|03|May 21–27}} || bgcolor=#{{storm colour|ESCS}}|{{Sort|6|Extremely severe cyclonic storm}} || bgcolor=#{{storm colour|ESCS}}|{{Sort|175|{{convert|175|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|ESCS}}|{{sort|0960|{{convert|960|hPa|inHg|sigfig=4|abbr=on}}}} || Yemen, Oman, Saudi Arabia || {{ntsp|1500000000||$}} || 31 ||{{cite web|title=Global Catastrophe Recap June 2018|url=http://thoughtleadership.aonbenfield.com/Documents/20180710-ab-analytics-if-june-global-recap.pdf|access-date=July 15, 2018|archive-date=July 10, 2018|archive-url=https://web.archive.org/web/20180710152433/http://thoughtleadership.aonbenfield.com/Documents/20180710-ab-analytics-if-june-global-recap.pdf|url-status=dead}}

|-

| BOB 01 || {{Sort|04|May 29–30}} || bgcolor=#{{storm colour|DD}}|{{Sort|2|Deep depression}} || bgcolor=#{{storm colour|DD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|DD}}|{{sort|0992|{{convert|992|hPa|inHg|sigfig=4|abbr=on}}}} || Myanmar, Bangladesh || None || 5 ||{{cite web |title=5 killed, 1,400 houses destroyed by cyclone in Myanmar |url=http://www.xinhuanet.com/english/2018-05/31/c_137220716.htm |agency=Xinhua.net |access-date=31 May 2018 |archive-date=14 August 2020 |archive-url=https://web.archive.org/web/20200814042510/http://www.xinhuanet.com/english/2018-05/31/c_137220716.htm |url-status=dead }}

|-

| LAND 01 || {{Sort|05|June 10–10}} || bgcolor=#{{storm colour|D}}|{{Sort|1|Depression}} || bgcolor=#{{storm colour|D}}|{{Sort|045|{{convert|45|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|D}}|{{sort|0988|{{convert|988|hPa|inHg|sigfig=4|abbr=on}}}} || Bangladesh || None || None ||

|-

| LAND 02 || {{Sort|06|July 21–23}} || bgcolor=#{{storm colour|D}}|{{Sort|1|Depression}} || bgcolor=#{{storm colour|D}}|{{Sort|045|{{convert|45|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|D}}|{{sort|0988|{{convert|988|hPa|inHg|sigfig=4|abbr=on}}}} || East India, North India || Unknown || 5 ||

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| LAND 03 || {{Sort|07|August 7–8}} || bgcolor=#{{storm colour|D}}|{{Sort|1|Depression}} || bgcolor=#{{storm colour|D}}|{{Sort|045|{{convert|45|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|D}}|{{sort|0992|{{convert|992|hPa|inHg|sigfig=4|abbr=on}}}} || East India || None || None ||

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| LAND 04 || {{Sort|08|August 15–17}} || bgcolor=#{{storm colour|D}}|{{Sort|1|Depression}} || bgcolor=#{{storm colour|D}}|{{Sort|045|{{convert|45|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|D}}|{{sort|0993|{{convert|993|hPa|inHg|sigfig=4|abbr=on}}}} || East India, Central India, West India || Unknown || None ||

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| LAND 05 || {{Sort|09|September 6–7}} || bgcolor=#{{storm colour|DD}}|{{Sort|2|Deep depression}} || bgcolor=#{{storm colour|DD}}|{{Sort|055|{{convert|55|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|DD}}|{{sort|0990|{{convert|990|hPa|inHg|sigfig=4|abbr=on}}}} || East India || Unknown || None ||

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| Daye || {{Sort|10|September 19–22}} || bgcolor=#{{storm colour|CS}}|{{Sort|3|Cyclonic storm}} || bgcolor=#{{storm colour|CS}}|{{Sort|065|{{convert|65|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|CS}}|{{sort|0992|{{convert|992|hPa|inHg|sigfig=4|abbr=on}}}} || Andhra Pradesh, East India, Central India, North India || Minimal || None ||

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| Luban || {{Sort|11|October 6–15}} || bgcolor=#{{storm colour|VSCS}}|{{Sort|5|Very severe cyclonic storm}} || bgcolor=#{{storm colour|VSCS}}|{{Sort|140|{{convert|140|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|VSCS}}|{{sort|0978|{{convert|978|hPa|inHg|sigfig=4|abbr=on}}}} || Yemen, Oman || {{ntsp|1000000000||$}} || 14 || {{cite news|url=https://debriefer.net/en/news-4442.html|title=Govt. Report: Luban Storm cost US$ one billion|publisher=Debriefer|date=November 2, 2018|access-date=November 8, 2018}}

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| Titli || {{Sort|12|October 8–12}} || bgcolor=#{{storm colour|VSCS}}|{{Sort|5|Very severe cyclonic storm}} || bgcolor=#{{storm colour|VSCS}}|{{Sort|150|{{convert|150|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|VSCS}}|{{sort|0972|{{convert|972|hPa|inHg|sigfig=4|abbr=on}}}} || Andhra Pradesh, Odisha, West Bengal, Bangladesh || {{ntsp|920000000||$}} || 89 || {{cite web|title=Global Catastrophe Recap October 2018|url=http://thoughtleadership.aonbenfield.com//Documents/20181107-ab-analytics-if-oct-global-recap.pdf|access-date=November 21, 2018|archive-date=November 16, 2018|archive-url=https://web.archive.org/web/20181116085414/http://thoughtleadership.aonbenfield.com/Documents/20181107-ab-analytics-if-oct-global-recap.pdf|url-status=dead}}

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| Gaja || {{Sort|13|November 10–19}} || bgcolor=#{{storm colour|VSCS}}|{{Sort|4|Very severe cyclonic storm}} || bgcolor=#{{storm colour|VSCS}}|{{Sort|130|{{convert|130|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|VSCS}}|{{sort|0976|{{convert|976|hPa|inHg|sigfig=4|abbr=on}}}} || Andaman Islands, Tamil Nadu (India), Sri Lanka || {{ntsp|775000000||$}} || 52 ||

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| Phethai || {{Sort|14|December 13–17}} || bgcolor=#{{storm colour|SCS}}|{{Sort|4|Severe cyclonic storm}} || bgcolor=#{{storm colour|SCS}}|{{Sort|100|{{convert|100|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|SCS}}|{{sort|0992|{{convert|992|hPa|inHg|sigfig=4|abbr=on}}}} || East India, Northeast India || {{ntsp|100000000||$}} || 8 ||

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{{TC Areas affected (Bottom)|TC's=14 systems|dates=March 13 – December 17 |winds={{convert|175|km/h|mph|abbr=on|round=5}}|pres={{convert|960|hPa|inHg|sigfig=4|abbr=on}}|damage={{ntsp|4325000000||$}}|deaths=283|Refs=}}

{{Portal|Tropical cyclones}}

• Weather of 2018
• Tropical cyclones in 2018
• 2018 Atlantic hurricane season
• 2018 Pacific hurricane season
• 2018 Pacific typhoon season
• South-West Indian Ocean cyclone seasons: 2017–18, 2018–19
• Australian region cyclone seasons: 2017–18, 2018–19
• South Pacific cyclone seasons: 2017–18, 2018–19

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{{Commons category}}

• [https://rsmcnewdelhi.imd.gov.in/ India Meteorological Department]
• [http://www.metoc.navy.mil/jtwc/ Joint Typhoon Warning Center] {{Webarchive|url=https://web.archive.org/web/20180202190141/http://www.metoc.navy.mil/jtwc/ |date=2018-02-02 }}
• [http://www.nmc.cn/publish/typhoon/north-indian-ocean-tropical-cyclone-bulletin.htm National Meteorological Center of CMA] {{in lang|zh}}

{{2018 North Indian Ocean cyclone season buttons}}

{{TC Decades|Year=2010|basin=North Indian Ocean|type=cyclone}}

{{Tropical cyclone season|2018}}

Category:Articles which contain graphical timelines

2018 NIO