The 2011 season

Tropical Storm Sean (2011)

Tropical Storm Sean peaked at 55 kt in the North Atlantic between November 6, 2011 and November 12, 2011, with a lowest pressure of 982 mb. It killed 1 people in the United States, by the National Weather Service’s record.

Track and intensity

The whole track of Tropical Storm Sean, colored by strength, with the other storms of the 2011 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

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The storm

Basin
North Atlantic
Dates
November 6, 2011 to November 12, 2011
Peak strength
Tropical Storm, 55 kt (63 mph)
Lowest pressure
982 mb (29.00 inHg)
Landfall
No; closest approach 460 km (286 mi)
Accumulated cyclone energy
3.4
Tropical-storm-force wind reached
400 nmi (741 km, 460 mi) from the center at its widest
Eyewall radius at its peak
50 nmi (93 km, 58 mi)
Overall size
400 nmi (741 km, 460 mi) to the outermost closed isobar
Peak gust in the best track
65 kt (75 mph)
Fastest the center moved
33 kt (38 mph)
Identifier
AL192011

Deaths and damage

The sources count different things and are not added together.

NOAA Storm Events

1 deaths (1 direct, 0 indirect)none recorded

What National Weather Service offices recorded county by county in 1 states and marine areas, in the United States only. Property and crop damage as each office estimated it, which is not a national loss total.

In the United States

NOAA’s Storm Events database, the record National Weather Service offices compile months after a storm, as compiled March 2026.

Deaths
1 (1 direct, 0 indirect)
Injuries
1
Property damage
none recorded
Crop damage
none recorded
Events recorded
1 in 1 reports from 1 states and marine areas

State by state

State or marine areaDeathsInjuriesDamageEvents
Florida111

What was recorded

1 rip current.

What forecast offices wrote

From the Storm Events narratives, unedited.

A 34 year old female tourist was caught in a rip current and pulled underneath the water during rough surf, causing her to drown. One other woman was also caught in a rip current while swimming, but she was pulled from the water and survived.

Martin, Florida · Rip Current · Nov 9, 19:45 UTC

Track

Time (UTC)PositionWindPressureStatus
Nov 6, 00:0028.5N 70.0W45 kt1005 mbExtratropical
Nov 6, 06:0028.5N 69.2W45 kt1005 mbExtratropical
Nov 6, 12:0028.4N 68.8W45 kt1005 mbExtratropical
Nov 6, 18:0028.0N 68.5W45 kt1005 mbExtratropical
Nov 7, 00:0027.9N 68.6W45 kt1005 mbExtratropical
Nov 7, 06:0027.7N 68.7W40 kt1005 mbExtratropical
Nov 7, 12:0027.5N 69.0W40 kt1005 mbExtratropical
Nov 7, 18:0027.6N 69.3W40 kt1004 mbLow
Nov 8, 00:0027.6N 69.6W40 kt1002 mbLow
Nov 8, 06:0027.7N 69.8W40 kt1001 mbSubtropical storm
Nov 8, 12:0027.8N 70.0W45 kt1000 mbSubtropical storm
Nov 8, 18:0027.8N 70.0W45 kt999 mbTropical storm
Nov 9, 00:0027.8N 70.1W45 kt999 mbTropical storm
Nov 9, 06:0027.8N 70.2W50 kt996 mbTropical storm
Nov 9, 12:0027.9N 70.4W55 kt994 mbTropical storm
Nov 9, 18:0028.3N 70.6W55 kt991 mbTropical storm
Nov 10, 00:0029.0N 70.7W55 kt987 mbTropical storm
Nov 10, 06:0029.7N 70.9W55 kt984 mbTropical storm
Nov 10, 12:0030.2N 70.7W55 kt982 mbTropical storm
Nov 10, 18:0030.5N 70.0W55 kt983 mbTropical storm
Nov 11, 00:0031.0N 69.0W55 kt984 mbTropical storm
Nov 11, 06:0032.2N 67.2W50 kt987 mbTropical storm
Nov 11, 12:0033.4N 65.3W45 kt991 mbTropical storm
Nov 11, 18:0034.8N 62.6W40 kt995 mbTropical storm
Nov 12, 00:0035.9N 59.4W35 kt1000 mbExtratropical
Nov 12, 06:0038.0N 57.2W35 kt1000 mbExtratropical
Nov 12, 12:0040.0N 55.0W35 kt1000 mbExtratropical
Nov 12, 18:0042.5N 52.4W35 kt1000 mbExtratropical

Other North Atlantic storms of 2011

What this means

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Sources

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.