The 2011 Atlantic hurricane season started effectively on June 1st, 2011 and Ended on November 30th, 2011.
Storms[]
Hurricane Arlene[]
| Category 1 hurricane (SSHWS) | |
 | |
| Duration | June 28 – July 1 |
|---|---|
| Peak intensity | 75 mph (120 km/h) (1-min) 993 mbar (hPa) |
Note: Arlene's intensity was changed from 65 mph to 65 knots (75 mph)
Hurricane Bret[]
| Category 1 hurricane (SSHWS) | |
 | |
| Duration | July 17 – July 23 |
|---|---|
| Peak intensity | 80 mph (130 km/h) (1-min) 995 mbar (hPa) |
Note: Bret's intensity was changed from 70 mph to 70 knots (80 mph).
Hurricane Cindy[]
| Category 1 hurricane (SSHWS) | |
 | |
| Duration | July 20 – July 23 |
|---|---|
| Peak intensity | 80 mph (130 km/h) (1-min) 994 mbar (hPa) |
Note: Cindy's intensity was changed from 70 mph to 70 knots (80 mph).
Tropical Storm Don[]
| Tropical storm (SSHWS) | |
 | |
| Duration | July 27 – July 30 |
|---|---|
| Peak intensity | 60 mph (95 km/h) (1-min) 997 mbar (hPa) |
Note: Don's intensity was changed from 50 mph to 50 knots (60 mph).
Tropical Storm Emily[]
| Tropical storm (SSHWS) | |
 | |
| Duration | August 2 – August 7 |
|---|---|
| Peak intensity | 60 mph (95 km/h) (1-min) 1003 mbar (hPa) |
Note: Emily's intensity was changed from 50 mph to 50 knots (60 mph).
Tropical Storm Franklin[]
| Tropical storm (SSHWS) | |
 | |
| Duration | August 12 – August 13 |
|---|---|
| Peak intensity | 50 mph (85 km/h) (1-min) 1004 mbar (hPa) |
Note: Franklin's intensity was changed from 45 mph to 45 knots (50 mph).
Hurricane Gert[]
| Category 1 hurricane (SSHWS) | |
 | |
| Duration | August 13 – August 17 |
|---|---|
| Peak intensity | 75 mph (120 km/h) (1-min) 1000 mbar (hPa) |
Note: Gert's intensity was changed from 65 mph to 65 knots (75 mph).
Hurricane Harvey[]
| Category 1 hurricane (SSHWS) | |
 | |
| Duration | August 19 – August 22 |
|---|---|
| Peak intensity | 75 mph (120 km/h) (1-min) 994 mbar (hPa) |
Note: Harvey's intensity was changed from 65 mph to 65 knots (75 mph).
Hurricane Irene[]
| Category 4 hurricane (SSHWS) | |
 | |
| Duration | August 21 – August 28 |
|---|---|
| Peak intensity | 140 mph (220 km/h) (1-min) 942 mbar (hPa) |
Note: Irene's intensity was changed from 120 mph to 120 knots (140 mph).
Tropical Storm Jose[]
| Tropical storm (SSHWS) | |
 | |
| Duration | August 25 – August 26 |
|---|---|
| Peak intensity | 40 mph (65 km/h) (1-min) 1006 mbar (hPa) |
Note: Ten's intensity was changed from 35 mph to 35 knots (40 mph) and named Jose.
Tropical Storm Katia[]
| Tropical storm (SSHWS) | |
 | |
| Duration | August 27 – August 29 |
|---|---|
| Peak intensity | 50 mph (85 km/h) (1-min) 1006 mbar (hPa) |
Note: Jose's intensity was changed from 45 mph to 45 knots (50 mph) and renamed Katia.
Hurricane Lee[]
| Category 5 hurricane (SSHWS) | |
 | |
| Duration | August 29 – September 10 |
|---|---|
| Peak intensity | 160 mph (260 km/h) (1-min) 942 mbar (hPa) |
Note: Katia's intensity was changed from 140 mph to 140 knots (160 mph) and renamed Lee.
Tropical Storm Maria[]
| Tropical storm (SSHWS) | |
 | |
| Duration | September 1 – September 3 |
|---|---|
| Peak intensity | 50 mph (85 km/h) (1-min) 1002 mbar (hPa) |
Note: Unnamed's intensity was changed from 45 mph to 45 knots (50 mph) and renamed Maria.
Tropical Storm Nate[]
| Tropical storm (SSHWS) | |
 | |
| Duration | September 2 – September 5 |
|---|---|
| Peak intensity | 70 mph (110 km/h) (1-min) 986 mbar (hPa) |
Note: Lee's intensity was changed from 60 mph to 60 knots (70 mph) and renamed Nate.
Hurricane Ophelia[]
| Category 1 hurricane (SSHWS) | |
 | |
| Duration | September 5 – September 16 |
|---|---|
| Peak intensity | 90 mph (150 km/h) (1-min) 983 mbar (hPa) |
Note: Maria's intensity was changed from 80 mph to 80 knots (90 mph) and renamed Ophelia.
Hurricane Philippe[]
| Category 1 hurricane (SSHWS) | |
 | |
| Duration | September 5 – September 16 |
|---|---|
| Peak intensity | 85 mph (140 km/h) (1-min) 994 mbar (hPa) |
Note: Nate's intensity was changed from 75 mph to 75 knots (85 mph) and renamed Philippe.
Hurricane Rina[]
| Category 5 hurricane (SSHWS) | |
 | |
| Duration | September 19 – October 3 |
|---|---|
| Peak intensity | 160 mph (260 km/h) (1-min) 940 mbar (hPa) |
Note: Rina's intensity was changed from 140 mph to 140 knots (160 mph) and renamed Rina.
Hurricane Sean[]
| Category 2 hurricane (SSHWS) | |
 | |
| Duration | September 24 – October 9 |
|---|---|
| Peak intensity | 105 mph (165 km/h) (1-min) 976 mbar (hPa) |
Note: Philippe's intensity was changed from 90 mph to 90 knots (105 mph) and renamed Sean.
Hurricane Tammy[]
| Category 4 hurricane (SSHWS) | |
 | |
| Duration | October 23 – October 28 |
|---|---|
| Peak intensity | 135 mph (215 km/h) (1-min) 966 mbar (hPa) |
Note: Rina's intensity was changed from 115 mph to 115 knots (135 mph) and renamed Tammy.
Hurricane Vince[]
| Category 1 hurricane (SSHWS) | |
 | |
| Duration | November 8 – November 11 |
|---|---|
| Peak intensity | 75 mph (120 km/h) (1-min) 982 mbar (hPa) |
Note: Sean's intensity was changed from 65 mph to 65 knots (75 mph) and renamed Vince