The 1970 season

Unnamed tropical depression (1970)

Unnamed tropical depression peaked at 30 kt in the North Atlantic between November 13, 1970 and November 15, 1970, with a lowest pressure of 1004 mb.

Track and intensity

The whole track of Unnamed tropical depression, 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
November 13, 1970 to November 15, 1970
Peak strength
Tropical Depression, 30 kt (35 mph)
Lowest pressure
1004 mb (29.65 inHg)
Landfall
No; closest approach 62 km (39 mi)
Accumulated cyclone energy
0.0
Identifier
AL221970

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
Nov 13, 00:0013.0N 82.0W25 ktTropical depression
Nov 13, 06:0013.4N 82.0W25 ktTropical depression
Nov 13, 12:0013.8N 82.0W30 kt1005 mbTropical depression
Nov 13, 18:0014.2N 82.0W30 kt1004 mbTropical depression
Nov 14, 00:0014.6N 82.1W30 kt1004 mbTropical depression
Nov 14, 06:0015.0N 82.3W30 ktTropical depression
Nov 14, 12:0015.4N 82.7W30 ktTropical depression
Nov 14, 18:0015.8N 83.1W30 kt1005 mbTropical depression
Nov 15, 00:0016.2N 83.3W25 ktTropical depression
Nov 15, 06:0016.6N 83.4W25 ktTropical depression
Nov 15, 12:0017.0N 83.0W25 ktTropical depression

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.