The 1920 season

Unnamed tropical depression (1920)

Unnamed tropical depression peaked at unknown kt in the Western Pacific between October 10, 1920 and October 13, 1920.

Radar

Reflectivity now over Unnamed tropical depression. Open it to see storms, cones and warnings on the map.

Open the live radar with storms, cones and warnings

Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.

The storm

Basin
Western Pacific
Dates
October 10, 1920 to October 13, 1920
Peak strength
Tropical Depression
Landfall
No; closest approach 56 km (35 mi)
Accumulated cyclone energy
0.0
Identifier
1920284N14134

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
Oct 10, 00:0014.3N 133.0ETropical storm
Oct 10, 06:0016.0N 131.5ETropical storm
Oct 10, 12:0017.8N 130.1ETropical storm
Oct 10, 18:0019.7N 128.9ETropical storm
Oct 11, 00:0021.8N 128.4ETropical storm
Oct 11, 06:0023.9N 128.5ETropical storm
Oct 11, 12:0025.8N 129.5ETropical storm
Oct 11, 18:0027.3N 131.1ETropical storm
Oct 12, 00:0028.7N 132.9ETropical storm
Oct 12, 06:0030.1N 134.7ETropical storm
Oct 12, 12:0031.2N 136.5ETropical storm
Oct 12, 18:0032.2N 138.3ETropical storm
Oct 13, 00:0033.8N 140.0ETropical storm
Oct 13, 06:0036.0N 141.7ETropical storm
Oct 13, 12:0038.4N 143.0ETropical storm
Oct 13, 18:0040.7N 143.9ETropical storm

Other Western Pacific storms of 1920

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.