The 1909 season

Unnamed tropical depression (1909)

Unnamed tropical depression peaked at unknown kt in the Western Pacific between September 9, 1909 and September 15, 1909, and made landfall.

Track and intensity

The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1909 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
September 9, 1909 to September 15, 1909
Peak strength
Tropical Depression
Landfall
Yes
Accumulated cyclone energy
0.0
Identifier
1909253N24138

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
Sep 9, 18:0023.8N 136.7ENot reported
Sep 10, 00:0024.3N 134.1ENot reported
Sep 10, 06:0024.6N 132.5ETropical storm
Sep 10, 12:0024.6N 132.2ETropical storm
Sep 10, 18:0024.6N 132.1ETropical storm
Sep 11, 00:0024.7N 131.9ETropical storm
Sep 11, 06:0024.8N 131.6ETropical storm
Sep 11, 12:0024.9N 131.3ETropical storm
Sep 11, 18:0024.9N 130.9ETropical storm
Sep 12, 00:0025.0N 130.4ETropical storm
Sep 12, 06:0025.1N 130.0ETropical storm
Sep 12, 12:0025.2N 129.5ETropical storm
Sep 12, 18:0025.2N 129.2ETropical storm
Sep 13, 00:0025.3N 129.0ETropical storm
Sep 13, 06:0025.3N 128.5ETropical storm
Sep 13, 12:0025.3N 127.7ETropical storm
Sep 13, 18:0025.3N 126.9ETropical storm
Sep 14, 00:0025.4N 126.0ETropical storm
Sep 14, 06:0025.4N 124.8ETropical storm
Sep 14, 12:0025.4N 123.2ETropical storm
Sep 14, 18:0025.4N 121.4ETropical storm
Sep 15, 00:0025.2N 119.5ETropical storm

Other Western Pacific storms of 1909

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.