The 1921 season

Unnamed tropical depression (1921)

Unnamed tropical depression peaked at unknown kt in the Western Pacific between August 12, 1921 and August 21, 1921, and made landfall.

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
August 12, 1921 to August 21, 1921
Peak strength
Tropical Depression
Landfall
Yes
Accumulated cyclone energy
0.0
Identifier
1921224N14148

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
Aug 12, 00:0014.6N 148.3ETropical storm
Aug 12, 06:0015.0N 147.9ETropical storm
Aug 12, 12:0015.4N 147.5ETropical storm
Aug 12, 18:0015.9N 147.1ETropical storm
Aug 13, 00:0016.4N 146.6ETropical storm
Aug 13, 06:0017.1N 146.1ETropical storm
Aug 13, 12:0017.8N 145.5ETropical storm
Aug 13, 18:0018.6N 145.1ETropical storm
Aug 14, 00:0019.5N 144.8ETropical storm
Aug 14, 06:0020.6N 144.4ETropical storm
Aug 14, 12:0021.7N 144.0ETropical storm
Aug 14, 18:0022.7N 143.6ETropical storm
Aug 15, 00:0023.6N 143.3ETropical storm
Aug 15, 06:0024.3N 143.1ETropical storm
Aug 15, 12:0024.9N 143.0ETropical storm
Aug 15, 18:0025.5N 142.8ETropical storm
Aug 16, 00:0026.3N 142.1ETropical storm
Aug 16, 06:0027.1N 141.0ETropical storm
Aug 16, 12:0027.8N 139.5ETropical storm
Aug 16, 18:0028.2N 137.9ETropical storm
Aug 17, 00:0028.5N 136.3ETropical storm
Aug 17, 06:0028.8N 135.0ETropical storm
Aug 17, 12:0029.0N 133.6ETropical storm
Aug 17, 18:0029.2N 132.1ETropical storm
Aug 18, 00:0029.3N 131.1ETropical storm
Aug 18, 06:0029.4N 130.7ETropical storm
Aug 18, 12:0029.4N 130.4ETropical storm
Aug 18, 18:0029.5N 130.0ETropical storm
Aug 19, 00:0029.5N 129.4ETropical storm
Aug 19, 06:0029.6N 128.6ETropical storm
Aug 19, 12:0029.6N 127.7ETropical storm
Aug 19, 18:0029.7N 127.0ETropical storm
Aug 20, 00:0029.8N 126.1ETropical storm
Aug 20, 06:0029.8N 125.2ETropical storm
Aug 20, 12:0029.8N 124.2ETropical storm
Aug 20, 18:0029.8N 123.1ETropical storm
Aug 21, 00:0029.8N 122.1ETropical storm
Aug 21, 06:0029.8N 121.2ETropical storm
Aug 21, 12:0029.8N 120.3ETropical storm
Aug 21, 18:0029.8N 119.5ETropical storm

Other Western Pacific storms of 1921

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.