The 1917 season

Unnamed hurricane (1917)

Unnamed hurricane reached Category 3 in the North Atlantic between August 30, 1917 and September 7, 1917.

Track and intensity

The whole track of Unnamed hurricane, colored by strength, with the other storms of the 1917 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
August 30, 1917 to September 7, 1917
Peak strength
Category 3, 105 kt (121 mph)
Landfall
No; closest approach 89 km (55 mi)
Accumulated cyclone energy
20.4
Identifier
AL031917

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
Aug 30, 06:0015.5N 44.5W60 ktTropical storm
Aug 30, 12:0016.0N 46.0W60 ktTropical storm
Aug 30, 18:0016.5N 47.6W60 ktTropical storm
Aug 31, 00:0017.0N 49.2W60 ktTropical storm
Aug 31, 06:0017.5N 50.7W65 ktHurricane
Aug 31, 12:0018.0N 52.0W70 ktHurricane
Aug 31, 18:0018.5N 53.0W70 ktHurricane
Sep 1, 00:0019.0N 54.0W75 ktHurricane
Sep 1, 06:0019.6N 55.0W80 ktHurricane
Sep 1, 12:0020.2N 56.0W80 ktHurricane
Sep 1, 18:0020.7N 57.0W85 ktHurricane
Sep 2, 00:0021.3N 58.0W85 ktHurricane
Sep 2, 06:0021.9N 59.0W90 ktHurricane
Sep 2, 12:0022.5N 60.0W90 ktHurricane
Sep 2, 18:0023.1N 60.9W90 ktHurricane
Sep 3, 00:0023.8N 61.8W95 ktHurricane
Sep 3, 06:0024.6N 62.6W95 ktHurricane
Sep 3, 12:0025.5N 63.2W95 ktHurricane
Sep 3, 18:0026.6N 63.6W100 ktHurricane
Sep 4, 00:0028.0N 63.8W100 ktHurricane
Sep 4, 06:0029.6N 63.6W105 ktHurricane
Sep 4, 12:0031.3N 63.1W105 ktHurricane
Sep 4, 18:0032.9N 62.2W105 ktHurricane
Sep 5, 00:0034.5N 60.7W105 ktHurricane
Sep 5, 06:0036.2N 58.5W100 ktHurricane
Sep 5, 12:0037.9N 56.1W95 ktHurricane
Sep 5, 18:0040.2N 53.0W90 ktHurricane
Sep 6, 00:0043.0N 50.1W80 ktExtratropical
Sep 6, 06:0046.3N 47.6W70 ktExtratropical
Sep 6, 12:0049.8N 44.5W55 ktExtratropical
Sep 6, 18:0053.0N 41.0W50 ktExtratropical
Sep 7, 00:0055.8N 37.0W50 ktExtratropical
Sep 7, 06:0058.5N 32.5W50 ktExtratropical
Sep 7, 12:0061.0N 28.0W45 ktExtratropical
Sep 7, 18:0063.0N 23.0W40 ktExtratropical

Other North Atlantic storms of 1917

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.