The 1870 season

Unnamed tropical depression (1870)

Unnamed tropical depression peaked at unknown kt in the North Atlantic between November 5, 1870 and November 16, 1870.

Track and intensity

The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1870 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 5, 1870 to November 16, 1870
Peak strength
Tropical Depression
Landfall
No; closest approach 234 km (145 mi)
Accumulated cyclone energy
0.0
Identifier
1870310N28324

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 5, 12:0028.0N 36.0WTropical storm
Nov 5, 18:0027.5N 37.0WTropical storm
Nov 6, 00:0027.0N 37.9WTropical storm
Nov 6, 06:0026.5N 38.8WTropical storm
Nov 6, 12:0026.0N 39.8WTropical storm
Nov 6, 18:0025.9N 41.0WTropical storm
Nov 7, 00:0025.8N 42.2WTropical storm
Nov 7, 06:0025.8N 43.4WTropical storm
Nov 7, 12:0025.8N 44.5WTropical storm
Nov 7, 18:0026.0N 45.0WTropical storm
Nov 8, 00:0026.5N 45.5WTropical storm
Nov 8, 06:0027.0N 46.0WTropical storm
Nov 8, 12:0027.5N 46.5WTropical storm
Nov 8, 18:0029.1N 45.2WTropical storm
Nov 9, 00:0030.7N 44.0WTropical storm
Nov 9, 06:0032.3N 42.7WTropical storm
Nov 9, 12:0033.8N 41.5WTropical storm
Nov 9, 18:0034.7N 40.5WTropical storm
Nov 10, 00:0035.6N 39.5WTropical storm
Nov 10, 06:0036.5N 38.5WTropical storm
Nov 10, 12:0037.5N 37.5WTropical storm
Nov 10, 18:0038.5N 36.5WTropical storm
Nov 11, 00:0039.5N 35.5WTropical storm
Nov 11, 06:0040.5N 34.5WTropical storm
Nov 11, 12:0040.2N 34.1WExtratropical
Nov 11, 18:0039.6N 33.7WExtratropical
Nov 12, 00:0038.8N 33.3WExtratropical
Nov 12, 06:0038.0N 32.9WExtratropical
Nov 12, 12:0037.3N 32.5WExtratropical
Nov 12, 18:0036.4N 31.0WExtratropical
Nov 13, 00:0035.5N 29.5WExtratropical
Nov 13, 06:0033.0N 25.0WExtratropical
Nov 13, 12:0033.0N 23.0WExtratropical
Nov 13, 18:0033.5N 21.0WExtratropical
Nov 14, 00:0034.1N 19.0WExtratropical
Nov 14, 06:0034.6N 17.0WExtratropical
Nov 14, 12:0033.5N 16.0WExtratropical
Nov 14, 18:0033.9N 15.5WExtratropical
Nov 15, 00:0034.4N 15.0WExtratropical
Nov 15, 06:0035.0N 14.5WExtratropical
Nov 15, 12:0035.6N 14.0WExtratropical
Nov 15, 18:0036.2N 13.5WExtratropical
Nov 16, 00:0036.8N 13.0WExtratropical
Nov 16, 06:0037.4N 12.5WExtratropical
Nov 16, 12:0038.0N 12.0WExtratropical

Other North Atlantic storms of 1870

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.