The 1981 season

Hurricane Dennis (1981)

Hurricane Dennis reached Category 1 in the North Atlantic between August 7, 1981 and August 22, 1981, with a lowest pressure of 995 mb, and made landfall.

Radar

Reflectivity now over Hurricane Dennis. Open it to see storms, cones and warnings on the map.

Open the live radar with storms, cones and warnings

Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.

The storm

Basin
North Atlantic
Dates
August 7, 1981 to August 22, 1981
Peak strength
Category 1, 70 kt (81 mph)
Lowest pressure
995 mb (29.38 inHg)
Landfall
Yes
Accumulated cyclone energy
6.4
Fastest the center moved
26 kt (30 mph)
Identifier
AL101981

Deaths and damage

No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.

Rainfall

The Weather Prediction Center attributes 769 rain gauge totals over the contiguous United States to this storm. The wettest reached 25.56 inches (649 mm).

StationTotalPosition
HOMESTEAD/IRA EBERSOLE25.56 in (649 mm)25.53N 80.50W
HOMESTEAD EXP STN20.84 in (529 mm)25.50N 80.50W
DADE COU_R18.23 in (463 mm)25.47N 80.48W
NP-RCR17.50 in (445 mm)25.39N 80.68W
GENERAL_R17.46 in (443 mm)25.72N 80.48W
L.T. COP_R16.41 in (417 mm)25.73N 80.40W
ROYAL PALM RANGER ST15.88 in (403 mm)25.38N 80.60W
PENNSUCO_R14.40 in (366 mm)25.93N 80.45W
NNRC.R2_R13.92 in (354 mm)26.34N 80.54W
US27-PALM BCH/BROWARD CO LINE13.86 in (352 mm)26.34N 80.54W
LOXAHATCHEE NWR-WEST13.42 in (341 mm)26.47N 80.45W
FLAMINGO RANGER STN13.32 in (338 mm)25.15N 80.92W

WPC’s storm rainfall file, 1900 to 2020, compiled by David Roth.

Track

Time (UTC)PositionWindPressureStatus
Aug 7, 06:0010.5N 25.7W30 kt1009 mbTropical depression
Aug 7, 12:0010.8N 28.1W30 kt1008 mbTropical depression
Aug 7, 18:0011.0N 29.6W30 kt1007 mbTropical depression
Aug 8, 00:0011.3N 31.3W35 kt1006 mbTropical storm
Aug 8, 06:0011.7N 33.1W35 kt1005 mbTropical storm
Aug 8, 12:0012.0N 35.0W35 kt1004 mbTropical storm
Aug 8, 18:0012.5N 36.7W40 kt1003 mbTropical storm
Aug 9, 00:0012.8N 38.7W40 kt1002 mbTropical storm
Aug 9, 06:0013.1N 40.8W40 kt1001 mbTropical storm
Aug 9, 12:0013.3N 43.0W40 kt1001 mbTropical storm
Aug 9, 18:0013.5N 45.0W40 kt1001 mbTropical storm
Aug 10, 00:0013.5N 47.0W40 kt1001 mbTropical storm
Aug 10, 06:0013.5N 49.0W40 kt1002 mbTropical storm
Aug 10, 12:0013.5N 51.0W40 kt1004 mbTropical storm
Aug 10, 18:0013.6N 52.9W35 kt1006 mbTropical storm
Aug 11, 00:0013.8N 54.9W30 kt1007 mbTropical depression
Aug 11, 06:0014.0N 56.5W30 kt1008 mbTropical depression
Aug 11, 12:0014.3N 58.3W30 kt1009 mbTropical depression
Aug 11, 18:0014.6N 60.1W30 kt1010 mbTropical depression
Aug 12, 00:0014.9N 61.9W25 kt1010 mbTropical depression
Aug 12, 06:0015.2N 63.8W25 kt1011 mbTropical depression
Aug 12, 12:0015.4N 65.7W25 kt1011 mbTropical depression
Aug 12, 18:0015.6N 67.6W25 kt1011 mbTropical depression
Aug 13, 00:0015.8N 69.5W15 ktTropical wave
Aug 13, 06:0015.9N 71.2W15 ktTropical wave
Aug 13, 12:0016.1N 72.8W15 ktTropical wave
Aug 13, 18:0016.4N 74.4W15 ktTropical wave
Aug 14, 00:0016.8N 75.7W15 ktTropical wave
Aug 14, 06:0017.4N 77.0W15 ktTropical wave
Aug 14, 12:0018.0N 78.0W15 ktTropical wave
Aug 14, 18:0018.8N 78.8W15 ktTropical wave
Aug 15, 00:0019.5N 79.5W15 ktTropical wave
Aug 15, 06:0020.3N 80.0W15 ktTropical wave
Aug 15, 12:0021.0N 80.5W15 ktTropical wave
Aug 15, 18:0021.7N 80.8W30 kt1007 mbTropical depression
Aug 16, 00:0022.4N 81.0W35 kt1005 mbTropical storm
Aug 16, 06:0023.0N 81.2W35 kt1003 mbTropical storm
Aug 16, 12:0023.8N 81.4W35 kt1001 mbTropical storm
Aug 16, 18:0024.5N 81.3W35 kt1000 mbTropical storm
Aug 17, 00:0024.9N 81.3W35 kt998 mbTropical storm
Aug 17, 06:0025.2N 81.2W35 kt999 mbTropical storm
Aug 17, 12:0025.8N 81.2W35 kt999 mbTropical storm
Aug 17, 18:0026.2N 81.2W35 kt1001 mbTropical storm
Aug 18, 00:0026.5N 81.2W35 kt1003 mbTropical storm
Aug 18, 06:0026.8N 81.1W35 kt1004 mbTropical storm
Aug 18, 12:0027.2N 81.0W35 kt1005 mbTropical storm
Aug 18, 18:0027.6N 81.0W35 kt1005 mbTropical storm
Aug 19, 00:0028.7N 80.8W35 kt1004 mbTropical storm
Aug 19, 06:0029.7N 80.8W40 kt1003 mbTropical storm
Aug 19, 12:0031.0N 80.8W40 kt1002 mbTropical storm
Aug 19, 18:0032.2N 79.9W45 kt1001 mbTropical storm
Aug 20, 00:0033.4N 78.8W50 kt999 mbTropical storm
Aug 20, 06:0034.7N 77.0W55 kt998 mbTropical storm
Aug 20, 12:0035.5N 75.2W60 kt997 mbTropical storm
Aug 20, 18:0036.3N 73.0W65 kt995 mbHurricane
Aug 21, 00:0037.1N 70.4W70 kt995 mbHurricane
Aug 21, 06:0037.8N 68.0W55 kt998 mbTropical storm
Aug 21, 12:0038.1N 65.4W45 kt1000 mbTropical storm
Aug 21, 18:0038.4N 62.8W40 kt1003 mbTropical storm
Aug 22, 00:0037.8N 59.7W35 kt1005 mbExtratropical

Other North Atlantic storms of 1981

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.

The National Hurricane Center has published no tropical cyclone report for this storm.