Unnamed tropical depression (1958)

Unnamed tropical depression peaked at unknown kt in the Western Pacific between April 29, 1958 and April 30, 1958, with a lowest pressure of 995 mb, and made landfall.

Track and intensity

The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1958 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: April 29, 1958 to April 30, 1958
Peak strength: Tropical Depression
Lowest pressure: 995 mb (29.38 inHg)
Landfall: Yes
Accumulated cyclone energy: 0.0
Identifier: 1958119N13128

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)	Position	Pressure	Status
Apr 29, 00:00	12.5N 128.0E	1008 mb	Mixed
Apr 29, 06:00	13.0N 127.0E	995 mb	Tropical storm
Apr 29, 12:00	13.5N 125.9E	995 mb	Tropical storm
Apr 29, 18:00	13.4N 125.2E	1000 mb	Tropical storm
Apr 30, 00:00	13.2N 124.5E	1008 mb	Tropical storm
Apr 30, 06:00	11.8N 122.5E	1006 mb	Tropical storm

Other Western Pacific storms of 1958

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.