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2011 Atlantic hurricane season
2011 Atlantic hurricane season summary map
Season summary map
Seasonal boundaries
First system formed June 28, 2011
Last system dissipated November 11, 2011
Strongest storm
Name Ophelia
 • Maximum winds 150 mph (240 km/h)
 • Lowest pressure 940 mbar (hPa; 27.76 inHg)
Seasonal statistics
Total depressions 20
Total storms 19
Hurricanes 7
Major hurricanes
(Cat. 3+)
4
Total fatalities 299 - 100 Direct, 14 Indirect
Total damage ≥ $16.18 billion (2011 USD)
Atlantic hurricane seasons
2009, 2010, 2011, 2012, 2013
The 2011 Atlantic hurricane season was another very active season as a result of a continuing strong La Nina, though most storms were weak or short lived. This season featured a total of 20 tropical cyclones, 19 named storms, and 1 unnamed storm, 7 hurricanes, and 4 major hurricanes. This season is tied for third most active along with, 1887, 1995, 2010, and 2012. The strongest storm was Category 4 Hurricane Ophelia, that caused minimal damages.

Timeline

Storms

Tropical Storm Arlene

Tropical storm (SSHWS)
Tropical Storm Arlene jun 30 2011 1945Z.jpg Arlene 2011 track.png
Duration June 28 – July 1
Peak intensity 65 mph (100 km/h) (1-min)  993 mbar (hPa)

Arlene was a tropical storm over the southwestern Gulf of Mexico that made landfall along the coast of Mexico in the state of Veracruz.[1]

Tropical Storm Bret

Tropical storm (SSHWS)
Tropical Storm Bret jul 18 2011 1755Z.jpg Bret 2011 track.png
Duration July 17 – July 22
Peak intensity 70 mph (110 km/h) (1-min)  995 mbar (hPa)

Bret was a tropical storm that remained over the open ocean throughout its lifetime and briefly threatened the northern Bahamas.[2]

Tropical Storm Cindy

Tropical storm (SSHWS)
Cindy (2011) Jul 21 2011.jpg Cindy 2011 track.png
Duration July 20 – July 22
Peak intensity 70 mph (110 km/h) (1-min)  994 mbar (hPa)

Cindy was a short-lived tropical storm that developed east of Bermuda and moved quickly northeastward over the cooler waters of the North Atlantic.[3]

Tropical Storm Don

Tropical storm (SSHWS)
Tropical Storm Don Jul 29 2011 1915Z.jpg Don 2011 track.png
Duration July 27 – July 30
Peak intensity 50 mph (85 km/h) (1-min)  997 mbar (hPa)

Don was a tropical storm that formed in the Yucatan Channel and moved west-northwestward across the Gulf of Mexico. Don weakened to a tropical depression as it made landfall in south Texas.[4]

Tropical Storm Emily

Tropical storm (SSHWS)
Tropical Storm Emily Aug 2 2011 1745Z.jpg Emily 2011 track.png
Duration August 2 – August 7
Peak intensity 50 mph (85 km/h) (1-min)  1003 mbar (hPa)

Emily became a tropical storm in the eastern Caribbean Sea and degenerated into a tropical wave near the southwestern peninsula of Haiti. Emily then reformed in the northwestern Bahamas as a tropical storm.[5]

Tropical Storm Franklin

Tropical storm (SSHWS)
Franklin Aug 13 2011 1655Z.jpg Franklin 2011 track.png
Duration August 12 – August 13
Peak intensity 45 mph (75 km/h) (1-min)  1004 mbar (hPa)

Franklin was a short-lived tropical storm over the central Atlantic that did not affect land.[6]

Tropical Storm Gert

Tropical storm (SSHWS)
Tropical Storm Gert Aug 15 2011 1505Z.jpg Gert 2011 track.png
Duration August 13 – August 16
Peak intensity 65 mph (100 km/h) (1-min)  1000 mbar (hPa)

Gert was a small tropical storm that formed over the central Atlantic Ocean, passed just to the east of Bermuda, and dissipated over the northwestern Atlantic.[7]

Tropical Storm Harvey

Tropical storm (SSHWS)
Harvey Aug 20 2011 1445Z.jpg Harvey 2011 track.png
Duration August 19 – August 22
Peak intensity 65 mph (100 km/h) (1-min)  994 mbar (hPa)

Harvey was a short-lived tropical storm that made landfall with 55-kt winds in Belize and weakened as it moved across the southern Yucatan Peninsula. It re-strengthened into a tropical storm over the extreme southern portion of the Bay of Campeche before moving into southeastern Mexico, with floods causing five fatalities in that country.[8]

Hurricane Irene

Category 3 hurricane (SSHWS)
Hurricane Irene Aug 24 2011 1810Z.jpg Irene 2011 track.png
Duration August 21 – August 28
Peak intensity 120 mph (195 km/h) (1-min)  942 mbar (hPa)
Main article: Hurricane Irene

Irene hit Crooked, Acklins and Long Island in the Bahamas as a category 3 hurricane (on the Saffir-Simpson Hurricane Wind Scale) but gradually weakened after crossing the Bahamas. It made landfall in North Carolina as a category 1 hurricane and caused widespread damage across a large portion of the eastern United States as it moved north-northeastward, bringing significant effects from the mid-Atlantic states through New England. The most severe impact of Irene in the northeastern United States was catastrophic inland flooding in New Jersey, Massachusetts and Vermont.[9]

Tropical Depression Ten

Tropical depression (SSHWS)
10L Aug 25 2011 1535Z.jpg 10-L 2011 track.png
Duration August 25 – August 26
Peak intensity 35 mph (55 km/h) (1-min)  1006 mbar (hPa)

Tropical Storm Jose

Tropical storm (SSHWS)
Jose Aug 28 2011 1750Z.jpg Jose 2011 track.png
Duration August 27 – August 28
Peak intensity 45 mph (75 km/h) (1-min)  1006 mbar (hPa)

Jose was a short-lived tropical storm of non-tropical origin that passed a short distance west of Bermuda.[10]

Hurricane Katia

Category 4 hurricane (SSHWS)
Hurricane Katia Sept 5 2011 1700Z.jpg Katia 2011 track.png
Duration August 29 – September 10
Peak intensity 140 mph (220 km/h) (1-min)  942 mbar (hPa)

Katia was a long-track, classical Cape Verde-type hurricane that attained category 4 status (on the Saffir-Simpson Hurricane Wind Scale), but remained over the open Atlantic Ocean throughout its lifetime as a tropical cyclone. However, as a large and powerful extratropical cyclone, Katia produced hurricane-force wind gusts over much of the northern British Isles, which caused some damage and loss of life.[11]

Unnamed Tropical Storm

Tropical storm (SSHWS)
Unnamed TS 2011.jpg Unnamed Atlantic TS 2011 track.png
Duration September 1 – September 2
Peak intensity 45 mph (75 km/h) (1-min)  1002 mbar (hPa)

As part of its routine post-season review, the National Hurricane Center (NHC) occasionally identifies from new data or meteorological interpretation a previously undesignated tropical or subtropical cyclone. The NHC re-analysis of 2011 has concluded that a short-lived low that passed between Bermuda and Nova Scotia from 31 August to 3 September briefly had sufficient tropical characteristics to be considered a tropical storm.[12]

Tropical Storm Lee

Tropical storm (SSHWS)
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Lee 2011 track.png
Duration September 2 – September 5
Peak intensity 60 mph (95 km/h) (1-min)  986 mbar (hPa)
Main article: Tropical Storm Lee (2011)

Lee was a tropical storm that evolved into a subtropical cyclone before making landfall in southern Louisiana. Lee and its remnants contributed to heavy rainfall and extensive flooding over portions of the eastern United States.[13]

Hurricane Maria

Category 1 hurricane (SSHWS)
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Maria 2011 track.png
Duration September 6 – September 16
Peak intensity 80 mph (130 km/h) (1-min)  983 mbar (hPa)

Maria formed in the eastern Atlantic Ocean and brought tropical storm conditions to portions of the Lesser Antilles. Maria then became a category 1 hurricane (on the Saffir-Simpson Hurricane Wind Scale) as it recurved through the northwestern Atlantic before it made landfall in Newfoundland as a strong tropical storm.[14]

Hurricane Nate

Category 1 hurricane (SSHWS)
Nate Sept 8 2011 1905Z.jpg Nate 2011 track.png
Duration September 7 – September 11
Peak intensity 75 mph (120 km/h) (1-min)  994 mbar (hPa)

Nate meandered over the Bay of Campeche for a day or so and briefly was a category 1 hurricane (on the Saffir-Simpson Hurricane Wind Scale). It then moved inland over eastern Mexico as a weak tropical storm.[15]

Hurricane Ophelia

Category 4 hurricane (SSHWS)
Ophelia250m Oct 1 2011 17.40(UTC).jpg Ophelia 2011 track.png
Duration September 20 – October 3
Peak intensity 140 mph (220 km/h) (1-min)  940 mbar (hPa)

Ophelia was a tropical storm when it was near the northern Leeward Islands, and became a category 4 hurricane (on the Saffir-Simpson Hurricane Wind Scale) when it passed to the east of Bermuda.[16]

Hurricane Philippe

Category 1 hurricane (SSHWS)
Hurricane Philippe Oct 6 2011 1445Z.jpg Philippe 2011 track.png
Duration September 24 – October 8
Peak intensity 90 mph (150 km/h) (1-min)  976 mbar (hPa)

Philippe was a long-lived tropical cyclone that twice became a category 1 hurricane (on the Saffir-Simpson Hurricane Wind Scale). Although it lasted for about two weeks, Philippe did not affect land.[17]

Hurricane Rina

Category 3 hurricane (SSHWS)
Hurricane Rina Oct 25 2011 1745Z.jpg Rina 2011 track.png
Duration October 23 – October 28
Peak intensity 115 mph (185 km/h) (1-min)  966 mbar (hPa)

Rina was a typical October major hurricane that formed in the western Caribbean Sea and moved toward the Yucatan Peninsula. However, it weakened significantly prior to landfall on the Yucatan Peninsula as a tropical storm and it dissipated near the Yucatan Channel.[18]

Tropical Storm Sean

Tropical storm (SSHWS)
Tropical Storm Sean Nov 10 2011 1515Z.jpg Sean 2011 track.png
Duration November 8 – November 11
Peak intensity 65 mph (100 km/h) (1-min)  982 mbar (hPa)

Sean was a tropical storm that formed between the Bahamas and Bermuda. The cyclone produced a brief period of tropical-storm-force winds in Bermuda as it moved nearby.[19]

Storm names

The following names were used for named storms in the North Atlantic in 2011. This is the list taken from the 2005 season with the substitution of Don, Katia, Rina, Sean, and Whitney for Dennis, Katrina, Rita, Stan, and Wilma, respectively. The names Don, Katia, Rina, and Sean were used for the first time. The names not retired will be reused for the 2017 season. Names that were not used are marked in gray.

  • Arlene
  • Bret
  • Cindy
  • Don
  • Emily
  • Franklin
  • Gert
  • Harvey
  • Irene
  • Jose
  • Katia
  • Lee
  • Maria
  • Nate
  • Ophelia
  • Philippe
  • Rina
  • Sean
  • Tammy (unused)
  • Vince (unused)
  • Whitney (unused)

Retirement

On April 13, 2012, at the 34th Session of the World Meteorological Organization's Regional Association Hurricane Committee, the WMO retired the name Irene from its rotating name lists. It was replaced with Irma for the 2017 Atlantic hurricane season.

Season effects

This is a table of all of the storms that have formed in the 2011 Atlantic hurricane season. It includes their duration, names, landfall(s) – denoted by bold location names – damages, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a wave, or a low, and all of the damage figures are in 2011 USD.

Saffir–Simpson hurricane wind scale
TD TS C1 C2 C3 C4 C5
2011 North Atlantic tropical cyclone statistics
Storm
name
Dates active Storm category

at peak intensity

Max 1-min
wind
mph (km/h)
Min.
press.
(mbar)
Areas affected Damage
(millions USD)
Deaths


Arlene June 28–July 1 Tropical storm 65 (100) 993 Central America, Mexico (Veracruz), Texas, Florida 223.4 18 (4)
Bret July 17–22 Tropical storm 70 (110) 995 Bahamas, Bermuda, East Coast of the United States None 0
Cindy July 20–22 Tropical storm 70 (110) 994 Bermuda None 0
Don July 27–30 Tropical storm 50 (85) 997 Cuba, Yucatán Peninsula, Northeastern Mexico, Texas None 0
Emily August 2–7 Tropical storm 50 (85) 1003 Antilles, Florida, Bahamas 5 4 (1)
Franklin August 12–13 Tropical storm 45 (75) 1004 Bermuda None 0
Gert August 13–16 Tropical storm 65 (100) 1000 Bermuda None 0
Harvey August 19–22 Tropical storm 65 (100) 994 Lesser Antilles, Hispaniola, Central America (Belize), Mexico (Veracruz) Minimal 5
Irene August 21–28 Category 3 hurricane 120 (195) 942 Antilles (US Virgin Islands, Puerto Rico), Lucayan Archipelago (Bahamas), Eastern United States (North Carolina, New Jersey, New York), Eastern Canada 14,200 49 (9)
Ten August 25–26 Tropical depression 35 (55) 1006 None None 0
Jose August 27–28 Tropical storm 45 (75) 1006 Bermuda None 0
Katia August 29–September 10 Category 4 hurricane 140 (220) 942 Lesser Antilles, East Coast of the United States, Canada, Europe 157 3 (1)
Unnamed August 31–September 3 Tropical storm 45 (75) 1002 None None 0
Lee September 1–5 Tropical storm 60 (95) 986 Gulf Coast of the United States (Louisiana), Eastern United States ≥$1,600 18
Maria September 6–16 Category 1 hurricane 80 (130) 983 Lesser Antilles, Bermuda, Newfoundland, Europe 1.3 0
Nate September 7–11 Category 1 hurricane 75 (120) 994 Mexico (Veracruz) Minimal 4 (1)
Ophelia September 20–October 3 Category 4 hurricane 140 (220) 940 Leeward Islands, Bermuda, Newfoundland, Europe Minimal 0
Philippe September 24 – October 8 Category 1 hurricane 90 (150) 976 None None 0
Rina October 23–28 Category 3 hurricane 115 (185) 966 Central America, Yucatán Peninsula (Quintana Roo), Cuba, Florida 2.3 0
Sean November 8–11 Tropical storm 65 (100) 982 Bermuda Minimal 0 (1)
Season Aggregates
20 cyclones June 28 – November 11   140 (220) 940 >$16.19 billion 96 (16)

References

  1. http://www.nhc.noaa.gov/data/tcr/AL012011_Arlene.pdf
  2. http://www.nhc.noaa.gov/data/tcr/AL022011_Bret.pdf
  3. http://www.nhc.noaa.gov/data/tcr/AL032011_Cindy.pdf
  4. http://www.nhc.noaa.gov/data/tcr/AL042011_Don.pdf
  5. http://www.nhc.noaa.gov/data/tcr/AL052011_Emily.pdf
  6. http://www.nhc.noaa.gov/data/tcr/AL062011_Franklin.pdf
  7. http://www.nhc.noaa.gov/data/tcr/AL072011_Gert.pdf
  8. http://www.nhc.noaa.gov/data/tcr/AL082011_Harvey.pdf
  9. http://www.nhc.noaa.gov/data/tcr/AL092011_Irene.pdf
  10. http://www.nhc.noaa.gov/data/tcr/AL112011_Jose.pdf
  11. http://www.nhc.noaa.gov/data/tcr/AL122011_Katia.pdf
  12. http://www.nhc.noaa.gov/data/tcr/AL202011_Unnamed.pdf
  13. http://www.nhc.noaa.gov/data/tcr/AL132011_Lee.pdf
  14. http://www.nhc.noaa.gov/data/tcr/AL142011_Maria.pdf
  15. http://www.nhc.noaa.gov/data/tcr/AL152011_Nate.pdf
  16. http://www.nhc.noaa.gov/data/tcr/AL162011_Ophelia.pdf
  17. http://www.nhc.noaa.gov/data/tcr/AL172011_Philippe.pdf
  18. http://www.nhc.noaa.gov/data/tcr/AL182011_Rina.pdf
  19. http://www.nhc.noaa.gov/data/tcr/AL192011_Sean.pdf