All seasons · Atlantic
2011 Atlantic hurricane season
The 2011 Atlantic season has 20 storms in the best-track record; 19 reached tropical-storm strength and 7 became hurricanes, 4 of them major. Its accumulated cyclone energy of 124.8 is the 43rd-highest of the 175 seasons in the Atlantic record since 1851. For storms of tropical-storm strength it is tied for the sixth-busiest season. Ophelia was the strongest, peaking at 140 mph as a Category 4 hurricane. Landfall records exist for 8 of its storms, in Belize, Louisiana, New Jersey, New York, Newfoundland and Labrador, North Carolina, Puerto Rico, Quintana Roo, Texas, the Bahamas, the US Virgin Islands and Veracruz. The first record is dated June 28, the last November 11.
Storm by storm
More storms formed in August than in any other month of 2011: 8 of 20. Philippe lasted longest, 14.2 days as a tropical or subtropical system. Katia contributed the most energy, 22% of the season's ACE. Strongest landfall of each storm: Arlene reached Veracruz as a tropical storm on June 30; Don reached Texas as a depression on July 30; Harvey reached Belize as a tropical storm on August 20; Irene reached the Bahamas as a Category 3 hurricane on August 24; Lee reached Louisiana as a tropical storm on September 4; Maria reached Newfoundland and Labrador as a tropical storm on September 16; Nate reached Veracruz as a tropical storm on September 11; Rina reached Quintana Roo as a tropical storm on October 28.
| Storm | Dates | Peak | Strength | Lowest | Landfalls |
|---|---|---|---|---|---|
| Arlene | Jun 28 – Jul 1 | 65 mph | Tropical storm | 993 mb | Veracruz |
| Bret | Jul 17–22 | 70 mph | Tropical storm | 995 mb | – |
| Cindy | Jul 20–22 | 70 mph | Tropical storm | 994 mb | – |
| Don | Jul 27–30 | 50 mph | Tropical storm | 997 mb | Texas |
| Emily | Aug 2–7 | 50 mph | Tropical storm | 1003 mb | – |
| Franklin | Aug 12–13 | 45 mph | Tropical storm | 1004 mb | – |
| Gert | Aug 13–16 | 65 mph | Tropical storm | 1000 mb | – |
| Harvey | Aug 19–22 | 65 mph | Tropical storm | 994 mb | Belize, Veracruz |
| Irene | Aug 21–28 | 120 mph | Category 3 | 942 mb | US Virgin Islands, Puerto Rico, Bahamas, North Carolina, New Jersey, New York |
| Ten | Aug 25–26 | 35 mph | Depression | 1006 mb | – |
| Jose | Aug 27–28 | 45 mph | Tropical storm | 1006 mb | – |
| Katia | Aug 29 – Sep 10 | 140 mph | Category 4 | 942 mb | – |
| Storm 20 of 2011 | Sep 1–2 | 45 mph | Tropical storm | 1002 mb | – |
| Lee | Sep 2–5 | 60 mph | Tropical storm | 986 mb | Louisiana |
| Maria | Sep 6–16 | 80 mph | Category 1 | 983 mb | Newfoundland and Labrador |
| Nate | Sep 7–11 | 75 mph | Category 1 | 994 mb | Veracruz |
| Ophelia | Sep 20 – Oct 3 | 140 mph | Category 4 | 940 mb | – |
| Philippe | Sep 24 – Oct 8 | 90 mph | Category 1 | 976 mb | – |
| Rina | Oct 23–28 | 115 mph | Category 3 | 966 mb | Quintana Roo |
| Sean | Nov 8–11 | 65 mph | Tropical storm | 982 mb | – |
Against other Atlantic seasons
Accumulated cyclone energy of every season; the red bar is 2011.