Unnamed hurricane (1970)

Unnamed hurricane reached Category 2 in the North Atlantic between October 20, 1970 and October 28, 1970, with a lowest pressure of 995 mb.

Track and intensity

The whole track of Unnamed hurricane, colored by strength, with the other storms of the 1970 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: October 20, 1970 to October 28, 1970
Peak strength: Category 2, 85 kt (98 mph)
Lowest pressure: 995 mb (29.38 inHg)
Landfall: No; closest approach 808 km (502 mi)
Accumulated cyclone energy: 8.4
Identifier: AL191970

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)	Position	Wind	Pressure	Status
Oct 20, 12:00	34.0N 48.0W	35 kt	1013 mb	Extratropical
Oct 20, 18:00	34.3N 47.8W	40 kt		Extratropical
Oct 21, 00:00	34.6N 47.4W	40 kt		Extratropical
Oct 21, 06:00	34.8N 46.8W	45 kt		Extratropical
Oct 21, 12:00	34.9N 46.0W	45 kt		Extratropical
Oct 21, 18:00	35.0N 45.5W	50 kt		Extratropical
Oct 22, 00:00	35.3N 45.0W	50 kt		Extratropical
Oct 22, 06:00	35.8N 44.5W	50 kt		Extratropical
Oct 22, 12:00	36.3N 44.1W	50 kt		Extratropical
Oct 22, 18:00	36.4N 43.7W	50 kt		Extratropical
Oct 23, 00:00	36.4N 43.2W	50 kt	997 mb	Subtropical storm
Oct 23, 06:00	36.2N 42.8W	55 kt	995 mb	Subtropical storm
Oct 23, 12:00	36.4N 42.3W	55 kt		Subtropical storm
Oct 23, 18:00	36.8N 42.1W	55 kt		Subtropical storm
Oct 24, 00:00	37.0N 41.8W	50 kt		Subtropical storm
Oct 24, 06:00	36.7N 41.7W	50 kt		Subtropical storm
Oct 24, 12:00	36.2N 41.5W	50 kt		Subtropical storm
Oct 24, 18:00	35.6N 41.3W	55 kt		Subtropical storm
Oct 25, 00:00	35.0N 41.0W	60 kt		Tropical storm
Oct 25, 06:00	34.5N 40.7W	65 kt		Hurricane
Oct 25, 12:00	34.0N 40.2W	70 kt		Hurricane
Oct 25, 18:00	34.1N 39.4W	75 kt		Hurricane
Oct 26, 00:00	34.8N 38.5W	80 kt		Hurricane
Oct 26, 06:00	35.5N 37.6W	85 kt		Hurricane
Oct 26, 12:00	36.0N 37.0W	85 kt		Hurricane
Oct 26, 18:00	36.5N 36.5W	85 kt		Hurricane
Oct 27, 00:00	37.0N 35.9W	85 kt		Hurricane
Oct 27, 06:00	37.7N 35.1W	80 kt		Hurricane
Oct 27, 12:00	38.7N 33.9W	75 kt		Hurricane
Oct 27, 18:00	39.9N 32.5W	70 kt		Hurricane
Oct 28, 00:00	41.1N 31.1W	65 kt		Hurricane
Oct 28, 06:00	42.8N 29.0W	60 kt		Tropical storm
Oct 28, 12:00	45.7N 25.3W	55 kt		Tropical storm
Oct 28, 18:00	49.0N 21.0W	50 kt		Tropical storm

Other North Atlantic storms of 1970

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.