Unnamed tropical storm (1975)

Unnamed tropical storm peaked at 60 kt in the North Atlantic between December 9, 1975 and December 13, 1975, with a lowest pressure of 985 mb.

Track and intensity

The whole track of Unnamed tropical storm, colored by strength, with the other storms of the 1975 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: December 9, 1975 to December 13, 1975
Peak strength: Tropical Storm, 60 kt (69 mph)
Lowest pressure: 985 mb (29.09 inHg)
Landfall: No; closest approach 987 km (613 mi)
Accumulated cyclone energy: 0.0
Identifier: AL231975

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
Dec 9, 12:00	41.6N 42.9W	35 kt	997 mb	Subtropical storm
Dec 9, 18:00	41.1N 43.0W	40 kt		Subtropical storm
Dec 10, 00:00	40.4N 43.1W	45 kt		Subtropical storm
Dec 10, 06:00	39.6N 43.2W	55 kt		Subtropical storm
Dec 10, 12:00	38.3N 43.4W	60 kt	992 mb	Subtropical storm
Dec 10, 18:00	36.5N 43.7W	55 kt		Subtropical storm
Dec 11, 00:00	34.5N 44.0W	50 kt		Subtropical storm
Dec 11, 06:00	32.5N 43.7W	45 kt		Subtropical storm
Dec 11, 12:00	30.5N 42.9W	40 kt		Subtropical storm
Dec 11, 18:00	28.7N 41.9W	40 kt	985 mb	Subtropical storm
Dec 12, 00:00	27.4N 40.5W	35 kt		Subtropical storm
Dec 12, 06:00	26.9N 38.2W	35 kt		Subtropical storm
Dec 12, 12:00	27.0N 36.0W	30 kt	1000 mb	Subtropical depression
Dec 12, 18:00	27.5N 35.0W	30 kt	1003 mb	Subtropical depression
Dec 13, 00:00	28.5N 34.6W	30 kt	1005 mb	Subtropical depression
Dec 13, 06:00	30.2N 34.4W	30 kt	1007 mb	Subtropical depression
Dec 13, 12:00	32.5N 34.5W	25 kt	1008 mb	Subtropical depression

Other North Atlantic storms of 1975

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.