:Tropical Storm Danny (2009)

{{storm path|Danny 2009 track.png}}

Danny originated in a tropical wave that exited the west coast of Africa on August 18. Convective activity associated with the system briefly began to organize on August 22, but wind shear soon halted further development. On August 24, thunderstorms once again increased as the disturbance interacted with an upper-level trough.{{cite web|author=John L. Beven|title=Tropical Storm Danny Tropical Cyclone Report|date=January 6, 2010|publisher=National Hurricane Center|access-date=January 12, 2010|url={{NHC TCR url|id=AL052009_Danny}}}} On August 25, a Hurricane Hunters mission into the system revealed a broad area of tropical-storm force winds, but no closed circulation center. However, around 0900 UTC on August 26, satellite imagery and QuikSCAT data indicated that a closed low had formed. While situated about {{convert|430|mi|km|abbr=on}} east of Nassau, Bahamas, the feature was declared a tropical storm—skipping the tropical depression stage.

Due to the interaction of the initial wave and the upper-level trough, Danny maintained a "non-classical" structure resembling that of a subtropical cyclone. Even after its designation as a tropical storm, the storm was highly disorganized. Little or no deep thunderstorm activity surrounded the center, and the highest winds were confined to a rainband in the northern semicircle of the cyclone.{{cite web|author=Forecaster Beven|title=Tropical Storm Danny Discussion Number 2|date=August 26, 2009|publisher=National Hurricane Center|access-date=January 12, 2010|url=http://www.nhc.noaa.gov/archive/2009/al05/al052009.discus.002.shtml?}} The storm moved erratically northwestward throughout the day on August 26, strengthening only slightly. Danny's center reformed several times, making it difficult to determine its direction of movement.{{cite web|author=Forecaster Blake|title=Tropical Storm Danny Discussion Number 4|date=August 27, 2009|publisher=National Hurricane Center|access-date=January 12, 2010|url=http://www.nhc.noaa.gov/archive/2009/al05/al052009.discus.004.shtml?}}

By early on August 27, the tropical storm became slightly better organized, although the most intense winds were still removed from the center.{{cite web|author=Forecaster Beven|title=Tropical Storm Danny Discussion Number 5|date=August 27, 2009|publisher=National Hurricane Center|access-date=January 12, 2010|url=http://www.nhc.noaa.gov/archive/2009/al05/al052009.discus.005.shtml?}} Danny peaked with maximum sustained winds of 60 mph (95 km/h) and a minimum pressure of 1006 mbar (hPa; 29.71 inHg). It held this strength for about 12 hours before reinvigorated shear caused the storm to gradually weaken as it meandered northward. By August 28, Danny further deteriorated, and reconnaissance aircraft found that it was barely a tropical storm.{{cite web|author=Forecaster Avila|title=Tropical Storm Danny Discussion Number 8|date=August 28, 2009|publisher=National Hurricane Center|access-date=January 12, 2010|url=http://www.nhc.noaa.gov/archive/2009/al05/al052009.discus.008.shtml}} After stalling during the afternoon, the center resumed a north or north-northwestward drift.{{cite web|author=Forecaster Brennan|title=Tropical Storm Danny Discussion Number 10|date=August 28, 2009|publisher=National Hurricane Center|access-date=January 12, 2010|url=http://www.nhc.noaa.gov/archive/2009/al05/al052009.discus.010.shtml?}}

File:Tropical Storm Danny 2009-08-28 1540Z.jpg on August 28]]

A strong upper-level trough moving through the southeastern United States forced Danny northeastward. It also triggered the formation of another low pressure system near the coast of North Carolina early on August 29. Although this low formed within Danny's cyclonic envelope, satellite imagery indicated that it did not have the characteristics of a tropical cyclone. Therefore, it is not considered to be a continuation of Danny. The new low caused the tropical storm to degenerate into a trough about 275 mi (445 km) southeast of Wilmington, North Carolina, and Danny's remnants were absorbed into a developing frontal zone shortly thereafter.

In advance of the cyclone, a tropical storm watch was posted for North Carolina from Cape Lookout to the town of Duck at 2100 UTC on August 27. It was discontinued on August 29.

As the storm remained offshore, its effects were limited. However, it generated strong rip currents and high waves along the U.S. East Coast which may have resulted in the drowning death of a 12-year-old boy near Corolla, North Carolina, on August 28.{{cite news|author=Jeff Hampton and Patrick Wilson|title=Coast Guard ends search for boy missing off Corolla|date=August 29, 2009|newspaper=The Virginian-Pilot}} On September 1, the Currituck County Sheriff's Office reported that the boy's body was found on the beach about {{convert|1|mi|km|abbr=on}} north of where he went missing.{{cite news|author=Paul Cox|title=Authorities find body of N.Y. boy who disappeared along N.C. coast|date=September 1, 2009|newspaper=The Star-Ledger|access-date=December 9, 2009|url=http://www.nj.com/news/index.ssf/2009/09/authorities_find_body_of_12yea.html}} Farther south, {{convert|7|ft|m|sigfig=1|adj=on}} swells reached Florida's Atlantic coast.{{cite web|author=|title=Event Record Details for Florida: High Surf|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~781449}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} High surf and rip currents also affected the Mid-Atlantic states, prompting officials to issue bathing restrictions.{{cite web|author=|title=Event Record Details for Delaware: High Surf|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~783354}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} A surfer in Monmouth County, New Jersey, broke his leg in the rough conditions.{{cite web|author=|title=Event Record Details for New Jersey: High Surf|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~784011}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }}

The remnants of the storm interacted with a frontal boundary, triggering widespread precipitation across numerous states. In Delaware County, Pennsylvania, torrential rainfall produced flash flooding that trapped one family in their basement.{{cite web|author=|title=Event Record Details for Pennsylvania: Flash Flood|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~781744}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} A creek near Philadelphia overflowed its banks and caused minor flooding.{{cite web|author=|title=Event Record Details for Pennsylvania: Flood|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~781743}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} Several roads in Lehigh County, including one lane of U.S. Route 222, were closed due to flood waters.{{cite web|author=|title=Event Record Details for Pennsylvania: Flash Flood|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~782565}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} Flooding also took place in New Jersey; numerous basements were submerged and motorists in Camden County had to be rescued from their vehicles.{{cite web|author=|title=Event Record Details for New Jersey: Flash Flood|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~782565}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} In Maryland, rainfall peaked at {{convert|7|in|mm|abbr=on}}.{{cite web|author=|title=Event Record Details for Maryland: Flash Flood|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~782331}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} The extratropical system impacted New England with high winds and heavy rainfall. At least {{convert|2|in|mm|abbr=on|sigfig=1}} of rain fell in Massachusetts and Rhode Island. Some roads throughout the region became impassable due to standing water.{{cite web|author=|title=Even Record Details for Massachusetts|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~782000}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} A site in the Nantucket Sound recorded a wind gust to {{convert|61|mph|km/h|abbr=on}}.{{cite web|author=|title=Event Record Details for North Atlantic to Canada: Marine High Wind|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~782033}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }} The former tropical cyclone produced wind gusts of {{convert|60|mph|km/h|abbr=on}} in Maine, toppling trees and ripping boats from their moorings at a harbor in Eastport.{{cite web|author=|title=Event Record Details for Maine: High Wind|year=2009|publisher=National Climatic Data Center|access-date=December 9, 2009|url=http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~782736}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }}

Danny's remnants later caused heavy rain across Atlantic Canada. At Saint John, New Brunswick, {{convert|100|mm|in|abbr=on}} of rain flooded at least 50 basements. The Meteorological Service of Canada hoisted several weather advisories for New Brunswick, Newfoundland, Prince Edward Island and Nova Scotia.{{cite news|author=The Canadian Press|title=Remnants of Danny bring wind, rain to N.L. after moving through Cape Breton|date=August 30, 2009|newspaper=The Cape Breton Post|access-date=December 9, 2009|url=http://www.capebretonpost.com/index.cfm?sid=282214&sc=145|archive-url=https://web.archive.org/web/20180909073904/http://www.capebretonpost.com/index.cfm?sid=282214&sc=145|archive-date=September 9, 2018|url-status=dead}}{{cite web|author=Forecaster Campbell|title=Hurricane Danny Information Statement|date=August 29, 2009|publisher=Canadian Hurricane Centre|access-date=January 13, 2010|url=http://www.atl.ec.gc.ca/weather/hurricane/bulletins/20090829234613.Danny.txt.en|url-status=dead|archive-url=https://web.archive.org/web/20110611115013/http://www.atl.ec.gc.ca/weather/hurricane/bulletins/20090829234613.Danny.txt.en|archive-date=June 11, 2011}} In Nova Scotia, over 16,000 residences lost power at the height of the storm.{{cite news|author=The Canadian Press|title=Post-tropical storm Danny moving across Cape Breton|date=August 30, 2009|newspaper=The Cape Breton Post|access-date=December 9, 2009|url=http://www.capebretonpost.com/index.cfm?sid=282211&sc=145|archive-url=https://web.archive.org/web/20180909112117/http://www.capebretonpost.com/index.cfm?sid=282211&sc=145|archive-date=September 9, 2018|url-status=dead}}

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• Timeline of the 2009 Atlantic hurricane season
• List of North Carolina hurricanes (2000–present)
• List of New England hurricanes
• List of Canada hurricanes
• Other storms of the same name

{{Reflist|2}}

{{Commons category}}

• [http://www.nhc.noaa.gov/archive/2009/DANNY.shtml? Advisory archive for Tropical Storm Danny]
• [https://web.archive.org/web/20110611125232/http://www.atl.ec.gc.ca/weather/hurricane/bulletins_all_e.html#2009:Danny List of bulletins] from the Canadian Hurricane Centre

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Category:2009 Atlantic hurricane season

Category:Atlantic tropical storms

Category:Hurricanes in Canada

Category:Hurricanes in North Carolina

Danny