Unnamed hurricane (1970)

Unnamed hurricane reached Category 2 in the North Atlantic between October 12, 1970 and October 17, 1970, with a lowest pressure of 974 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.

Open the live map with storms, cones and warnings

The storm

Basin: North Atlantic
Dates: October 12, 1970 to October 17, 1970
Peak strength: Category 2, 85 kt (98 mph)
Lowest pressure: 974 mb (28.76 inHg)
Landfall: No; closest approach 393 km (244 mi)
Accumulated cyclone energy: 5.4
Fastest the center moved: 33 kt (38 mph)
Identifier: AL181970

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 12, 12:00	24.5N 68.5W	30 kt	1003 mb	Subtropical depression
Oct 12, 18:00	25.0N 67.9W	35 kt		Subtropical storm
Oct 13, 00:00	25.5N 67.0W	35 kt		Subtropical storm
Oct 13, 06:00	25.9N 65.5W	35 kt		Subtropical storm
Oct 13, 12:00	26.3N 64.2W	35 kt	1002 mb	Subtropical storm
Oct 13, 18:00	26.7N 63.6W	35 kt	1002 mb	Subtropical storm
Oct 14, 00:00	27.0N 63.8W	40 kt	1001 mb	Subtropical storm
Oct 14, 06:00	27.0N 65.0W	45 kt	1001 mb	Subtropical storm
Oct 14, 12:00	27.0N 66.3W	50 kt	1001 mb	Subtropical storm
Oct 14, 18:00	27.2N 67.0W	55 kt	999 mb	Subtropical storm
Oct 15, 00:00	27.5N 67.3W	55 kt	997 mb	Tropical storm
Oct 15, 06:00	27.8N 67.4W	55 kt	996 mb	Tropical storm
Oct 15, 12:00	28.3N 67.4W	55 kt	995 mb	Tropical storm
Oct 15, 18:00	29.1N 67.4W	55 kt	994 mb	Tropical storm
Oct 16, 00:00	30.0N 67.1W	60 kt	991 mb	Tropical storm
Oct 16, 06:00	30.7N 66.6W	60 kt	994 mb	Tropical storm
Oct 16, 12:00	31.5N 66.0W	65 kt	989 mb	Hurricane
Oct 16, 18:00	32.5N 64.7W	75 kt	982 mb	Hurricane
Oct 17, 00:00	34.0N 63.4W	75 kt	983 mb	Hurricane
Oct 17, 06:00	36.4N 62.0W	85 kt	974 mb	Hurricane
Oct 17, 12:00	39.0N 60.5W	85 kt	975 mb	Hurricane
Oct 17, 18:00	42.0N 59.0W	70 kt		Hurricane

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.

Wikipedia article: 1970 Canada hurricane