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.























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).
| Station | Total | Position |
|---|---|---|
| HOMESTEAD/IRA EBERSOLE | 25.56 in (649 mm) | 25.53N 80.50W |
| HOMESTEAD EXP STN | 20.84 in (529 mm) | 25.50N 80.50W |
| DADE COU_R | 18.23 in (463 mm) | 25.47N 80.48W |
| NP-RCR | 17.50 in (445 mm) | 25.39N 80.68W |
| GENERAL_R | 17.46 in (443 mm) | 25.72N 80.48W |
| L.T. COP_R | 16.41 in (417 mm) | 25.73N 80.40W |
| ROYAL PALM RANGER ST | 15.88 in (403 mm) | 25.38N 80.60W |
| PENNSUCO_R | 14.40 in (366 mm) | 25.93N 80.45W |
| NNRC.R2_R | 13.92 in (354 mm) | 26.34N 80.54W |
| US27-PALM BCH/BROWARD CO LINE | 13.86 in (352 mm) | 26.34N 80.54W |
| LOXAHATCHEE NWR-WEST | 13.42 in (341 mm) | 26.47N 80.45W |
| FLAMINGO RANGER STN | 13.32 in (338 mm) | 25.15N 80.92W |
WPC’s storm rainfall file, 1900 to 2020, compiled by David Roth.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Aug 7, 06:00 | 10.5N 25.7W | 30 kt | 1009 mb | Tropical depression |
| Aug 7, 12:00 | 10.8N 28.1W | 30 kt | 1008 mb | Tropical depression |
| Aug 7, 18:00 | 11.0N 29.6W | 30 kt | 1007 mb | Tropical depression |
| Aug 8, 00:00 | 11.3N 31.3W | 35 kt | 1006 mb | Tropical storm |
| Aug 8, 06:00 | 11.7N 33.1W | 35 kt | 1005 mb | Tropical storm |
| Aug 8, 12:00 | 12.0N 35.0W | 35 kt | 1004 mb | Tropical storm |
| Aug 8, 18:00 | 12.5N 36.7W | 40 kt | 1003 mb | Tropical storm |
| Aug 9, 00:00 | 12.8N 38.7W | 40 kt | 1002 mb | Tropical storm |
| Aug 9, 06:00 | 13.1N 40.8W | 40 kt | 1001 mb | Tropical storm |
| Aug 9, 12:00 | 13.3N 43.0W | 40 kt | 1001 mb | Tropical storm |
| Aug 9, 18:00 | 13.5N 45.0W | 40 kt | 1001 mb | Tropical storm |
| Aug 10, 00:00 | 13.5N 47.0W | 40 kt | 1001 mb | Tropical storm |
| Aug 10, 06:00 | 13.5N 49.0W | 40 kt | 1002 mb | Tropical storm |
| Aug 10, 12:00 | 13.5N 51.0W | 40 kt | 1004 mb | Tropical storm |
| Aug 10, 18:00 | 13.6N 52.9W | 35 kt | 1006 mb | Tropical storm |
| Aug 11, 00:00 | 13.8N 54.9W | 30 kt | 1007 mb | Tropical depression |
| Aug 11, 06:00 | 14.0N 56.5W | 30 kt | 1008 mb | Tropical depression |
| Aug 11, 12:00 | 14.3N 58.3W | 30 kt | 1009 mb | Tropical depression |
| Aug 11, 18:00 | 14.6N 60.1W | 30 kt | 1010 mb | Tropical depression |
| Aug 12, 00:00 | 14.9N 61.9W | 25 kt | 1010 mb | Tropical depression |
| Aug 12, 06:00 | 15.2N 63.8W | 25 kt | 1011 mb | Tropical depression |
| Aug 12, 12:00 | 15.4N 65.7W | 25 kt | 1011 mb | Tropical depression |
| Aug 12, 18:00 | 15.6N 67.6W | 25 kt | 1011 mb | Tropical depression |
| Aug 13, 00:00 | 15.8N 69.5W | 15 kt | Tropical wave | |
| Aug 13, 06:00 | 15.9N 71.2W | 15 kt | Tropical wave | |
| Aug 13, 12:00 | 16.1N 72.8W | 15 kt | Tropical wave | |
| Aug 13, 18:00 | 16.4N 74.4W | 15 kt | Tropical wave | |
| Aug 14, 00:00 | 16.8N 75.7W | 15 kt | Tropical wave | |
| Aug 14, 06:00 | 17.4N 77.0W | 15 kt | Tropical wave | |
| Aug 14, 12:00 | 18.0N 78.0W | 15 kt | Tropical wave | |
| Aug 14, 18:00 | 18.8N 78.8W | 15 kt | Tropical wave | |
| Aug 15, 00:00 | 19.5N 79.5W | 15 kt | Tropical wave | |
| Aug 15, 06:00 | 20.3N 80.0W | 15 kt | Tropical wave | |
| Aug 15, 12:00 | 21.0N 80.5W | 15 kt | Tropical wave | |
| Aug 15, 18:00 | 21.7N 80.8W | 30 kt | 1007 mb | Tropical depression |
| Aug 16, 00:00 | 22.4N 81.0W | 35 kt | 1005 mb | Tropical storm |
| Aug 16, 06:00 | 23.0N 81.2W | 35 kt | 1003 mb | Tropical storm |
| Aug 16, 12:00 | 23.8N 81.4W | 35 kt | 1001 mb | Tropical storm |
| Aug 16, 18:00 | 24.5N 81.3W | 35 kt | 1000 mb | Tropical storm |
| Aug 17, 00:00 | 24.9N 81.3W | 35 kt | 998 mb | Tropical storm |
| Aug 17, 06:00 | 25.2N 81.2W | 35 kt | 999 mb | Tropical storm |
| Aug 17, 12:00 | 25.8N 81.2W | 35 kt | 999 mb | Tropical storm |
| Aug 17, 18:00 | 26.2N 81.2W | 35 kt | 1001 mb | Tropical storm |
| Aug 18, 00:00 | 26.5N 81.2W | 35 kt | 1003 mb | Tropical storm |
| Aug 18, 06:00 | 26.8N 81.1W | 35 kt | 1004 mb | Tropical storm |
| Aug 18, 12:00 | 27.2N 81.0W | 35 kt | 1005 mb | Tropical storm |
| Aug 18, 18:00 | 27.6N 81.0W | 35 kt | 1005 mb | Tropical storm |
| Aug 19, 00:00 | 28.7N 80.8W | 35 kt | 1004 mb | Tropical storm |
| Aug 19, 06:00 | 29.7N 80.8W | 40 kt | 1003 mb | Tropical storm |
| Aug 19, 12:00 | 31.0N 80.8W | 40 kt | 1002 mb | Tropical storm |
| Aug 19, 18:00 | 32.2N 79.9W | 45 kt | 1001 mb | Tropical storm |
| Aug 20, 00:00 | 33.4N 78.8W | 50 kt | 999 mb | Tropical storm |
| Aug 20, 06:00 | 34.7N 77.0W | 55 kt | 998 mb | Tropical storm |
| Aug 20, 12:00 | 35.5N 75.2W | 60 kt | 997 mb | Tropical storm |
| Aug 20, 18:00 | 36.3N 73.0W | 65 kt | 995 mb | Hurricane |
| Aug 21, 00:00 | 37.1N 70.4W | 70 kt | 995 mb | Hurricane |
| Aug 21, 06:00 | 37.8N 68.0W | 55 kt | 998 mb | Tropical storm |
| Aug 21, 12:00 | 38.1N 65.4W | 45 kt | 1000 mb | Tropical storm |
| Aug 21, 18:00 | 38.4N 62.8W | 40 kt | 1003 mb | Tropical storm |
| Aug 22, 00:00 | 37.8N 59.7W | 35 kt | 1005 mb | Extratropical |
Other North Atlantic storms of 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Tropical Storm ArleneNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Tropical Storm BretNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Tropical Storm CindyNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Hurricane EmilyNorth Atlantic · 1981
- Hurricane FloydNorth Atlantic · 1981
- Hurricane GertNorth Atlantic · 1981
- Hurricane HarveyNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Hurricane IreneNorth Atlantic · 1981
- Unnamed tropical depressionNorth Atlantic · 1981
- Tropical Storm JoseNorth Atlantic · 1981
- Hurricane KatrinaNorth Atlantic · 1981
- Unnamed tropical stormNorth Atlantic · 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.