The 1940 season

Unnamed tropical depression (1940)

Unnamed tropical depression peaked at unknown kt in the Western Pacific between December 8, 1940 and December 24, 1940, and made landfall.

Track and intensity

The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1940 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
Western Pacific
Dates
December 8, 1940 to December 24, 1940
Peak strength
Tropical Depression
Landfall
Yes
Accumulated cyclone energy
0.0
Identifier
1940344N12150

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
Dec 8, 12:0011.6N 150.0ETropical storm
Dec 8, 18:0012.6N 149.2ETropical storm
Dec 9, 00:0013.5N 148.2ETropical storm
Dec 9, 06:0014.1N 147.1ETropical storm
Dec 9, 12:0014.3N 145.8ETropical storm
Dec 9, 18:0014.3N 144.4ETropical storm
Dec 10, 00:0014.1N 143.1ETropical storm
Dec 10, 06:0014.0N 142.3ETropical storm
Dec 10, 12:0014.0N 141.6ETropical storm
Dec 10, 18:0014.1N 140.8ETropical storm
Dec 11, 00:0014.3N 140.1ETropical storm
Dec 11, 06:0014.4N 139.6ETropical storm
Dec 11, 12:0014.4N 139.3ETropical storm
Dec 11, 18:0014.4N 138.9ETropical storm
Dec 12, 00:0014.4N 138.5ETropical storm
Dec 12, 06:0014.3N 137.9ETropical storm
Dec 12, 12:0014.2N 137.3ETropical storm
Dec 12, 18:0013.9N 136.8ETropical storm
Dec 13, 00:0013.6N 136.2ETropical storm
Dec 13, 06:0013.2N 135.3ETropical storm
Dec 13, 12:0012.9N 134.3ETropical storm
Dec 13, 18:0012.6N 133.0ETropical storm
Dec 14, 00:0012.3N 131.9ETropical storm
Dec 14, 06:0012.1N 131.4ETropical storm
Dec 14, 12:0011.9N 131.1ETropical storm
Dec 14, 18:0011.8N 130.6ETropical storm
Dec 15, 00:0011.7N 130.2ETropical storm
Dec 15, 06:0011.7N 129.8ETropical storm
Dec 15, 12:0011.6N 129.5ETropical storm
Dec 15, 18:0011.4N 129.1ETropical storm
Dec 16, 00:0011.2N 128.8ETropical storm
Dec 16, 06:0011.0N 128.7ETropical storm
Dec 16, 12:0010.9N 128.6ETropical storm
Dec 16, 18:0010.7N 128.5ETropical storm
Dec 17, 00:0010.6N 128.5ETropical storm
Dec 17, 06:0010.5N 128.5ETropical storm
Dec 17, 12:0010.4N 128.6ETropical storm
Dec 17, 18:0010.3N 128.7ETropical storm
Dec 18, 00:0010.1N 128.9ETropical storm
Dec 18, 06:0010.0N 129.0ETropical storm
Dec 18, 12:009.9N 129.2ETropical storm
Dec 18, 18:009.8N 129.3ETropical storm
Dec 19, 00:009.8N 129.5ETropical storm
Dec 19, 06:009.9N 130.0ETropical storm
Dec 19, 12:0010.0N 130.7ETropical storm
Dec 19, 18:0010.1N 131.3ETropical storm
Dec 20, 00:0010.3N 131.8ETropical storm
Dec 20, 06:0010.5N 132.3ETropical storm
Dec 20, 12:0010.6N 132.7ETropical storm
Dec 20, 18:0010.5N 133.2ETropical storm
Dec 21, 00:0010.3N 133.5ETropical storm
Dec 21, 06:0010.1N 133.5ETropical storm
Dec 21, 12:0010.0N 133.3ETropical storm
Dec 21, 18:009.9N 133.2ETropical storm
Dec 22, 00:009.8N 132.8ETropical storm
Dec 22, 06:009.6N 131.8ETropical storm
Dec 22, 12:009.3N 130.6ETropical storm
Dec 22, 18:009.0N 129.5ETropical storm
Dec 23, 00:008.7N 128.2ETropical storm
Dec 23, 06:008.7N 126.4ETropical storm
Dec 23, 12:008.8N 124.5ETropical storm
Dec 23, 18:008.9N 122.6ETropical storm
Dec 24, 00:009.1N 120.8ETropical storm

Other Western Pacific storms of 1940

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.