The 1987 season

Tropical Storm Dennis (1987)

Tropical Storm Dennis peaked at 45 kt in the North Atlantic between September 8, 1987 and September 20, 1987, with a lowest pressure of 1000 mb.

Track and intensity

The whole track of Tropical Storm Dennis, colored by strength, with the other storms of the 1987 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
September 8, 1987 to September 20, 1987
Peak strength
Tropical Storm, 45 kt (52 mph)
Lowest pressure
1000 mb (29.53 inHg)
Landfall
No; closest approach 250 km (155 mi)
Accumulated cyclone energy
4.1
Fastest the center moved
27 kt (31 mph)
Identifier
AL101987

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.

Track

Time (UTC)PositionWindPressureStatus
Sep 8, 18:0010.8N 18.4W25 kt1012 mbTropical depression
Sep 9, 00:0010.9N 19.5W25 kt1011 mbTropical depression
Sep 9, 06:0010.9N 20.7W25 kt1011 mbTropical depression
Sep 9, 12:0010.9N 21.9W25 kt1011 mbTropical depression
Sep 9, 18:0010.8N 23.0W30 kt1011 mbTropical depression
Sep 10, 00:0010.7N 23.6W30 kt1011 mbTropical depression
Sep 10, 06:0010.7N 24.3W30 kt1009 mbTropical depression
Sep 10, 12:0010.8N 25.0W35 kt1008 mbTropical storm
Sep 10, 18:0010.9N 25.7W35 kt1005 mbTropical storm
Sep 11, 00:0011.3N 26.3W40 kt1003 mbTropical storm
Sep 11, 06:0011.8N 27.0W40 kt1002 mbTropical storm
Sep 11, 12:0012.3N 27.7W45 kt1001 mbTropical storm
Sep 11, 18:0012.8N 28.5W45 kt1000 mbTropical storm
Sep 12, 00:0013.2N 29.5W45 kt1000 mbTropical storm
Sep 12, 06:0013.5N 30.5W40 kt1001 mbTropical storm
Sep 12, 12:0013.8N 31.5W40 kt1002 mbTropical storm
Sep 12, 18:0014.2N 32.5W35 kt1004 mbTropical storm
Sep 13, 00:0014.6N 33.2W35 kt1005 mbTropical storm
Sep 13, 06:0015.1N 33.9W35 kt1005 mbTropical storm
Sep 13, 12:0015.5N 34.6W35 kt1005 mbTropical storm
Sep 13, 18:0015.9N 35.4W35 kt1005 mbTropical storm
Sep 14, 00:0016.3N 36.7W35 kt1005 mbTropical storm
Sep 14, 06:0016.8N 37.9W35 kt1005 mbTropical storm
Sep 14, 12:0017.2N 39.2W35 kt1005 mbTropical storm
Sep 14, 18:0017.7N 40.5W35 kt1005 mbTropical storm
Sep 15, 00:0017.8N 41.5W35 kt1005 mbTropical storm
Sep 15, 06:0017.8N 42.4W35 kt1005 mbTropical storm
Sep 15, 12:0017.7N 43.4W35 kt1005 mbTropical storm
Sep 15, 18:0017.6N 44.4W35 kt1005 mbTropical storm
Sep 16, 00:0017.5N 45.1W35 kt1005 mbTropical storm
Sep 16, 06:0017.5N 45.7W35 kt1005 mbTropical storm
Sep 16, 12:0017.6N 46.3W35 kt1005 mbTropical storm
Sep 16, 18:0017.6N 46.9W35 kt1005 mbTropical storm
Sep 17, 00:0017.7N 47.7W35 kt1005 mbTropical storm
Sep 17, 06:0017.8N 48.4W35 kt1005 mbTropical storm
Sep 17, 12:0017.8N 49.1W35 kt1006 mbTropical storm
Sep 17, 18:0017.9N 49.9W35 kt1006 mbTropical storm
Sep 18, 00:0018.1N 51.1W30 kt1007 mbTropical depression
Sep 18, 06:0018.5N 52.1W30 kt1009 mbTropical depression
Sep 18, 12:0020.8N 53.0W30 kt1010 mbTropical depression
Sep 18, 18:0023.2N 53.8W30 kt1011 mbTropical depression
Sep 19, 00:0024.5N 54.8W30 kt1012 mbTropical depression
Sep 19, 06:0025.7N 55.7W30 kt1012 mbTropical depression
Sep 19, 12:0027.0N 56.8W25 kt1012 mbTropical depression
Sep 19, 18:0028.5N 57.4W25 kt1012 mbTropical depression
Sep 20, 00:0030.2N 56.0W25 kt1012 mbTropical depression
Sep 20, 06:0031.3N 54.0W25 kt1012 mbTropical depression
Sep 20, 12:0032.1N 51.7W25 kt1012 mbTropical depression
Sep 20, 18:0032.8N 49.5W25 kt1012 mbExtratropical

Other North Atlantic storms of 1987

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.