The 1947 season

Unnamed tropical depression (1947)

Unnamed tropical depression peaked at unknown kt in the South Pacific between December 30, 1946 and January 3, 1947, with a lowest pressure of 999 mb.

Track and intensity

The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1947 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
South Pacific
Dates
December 30, 1946 to January 3, 1947
Peak strength
Tropical Depression
Lowest pressure
999 mb (29.50 inHg)
Landfall
No; closest approach 241 km (150 mi)
Accumulated cyclone energy
0.0
Identifier
SH061947

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 30, 00:0016.2S 148.1ETropical storm
Dec 30, 06:0016.2S 148.1ETropical storm
Dec 30, 12:0016.2S 148.1ETropical storm
Dec 30, 18:0016.2S 148.1ETropical storm
Dec 31, 00:0016.2S 148.1ETropical storm
Dec 31, 06:0016.2S 148.9ETropical storm
Dec 31, 12:0016.3S 149.9ETropical storm
Dec 31, 18:0016.7S 150.9ETropical storm
Jan 1, 00:0017.1S 151.7ETropical storm
Jan 1, 06:0017.5S 152.1ETropical storm
Jan 1, 12:0018.0S 152.3ETropical storm
Jan 1, 18:0018.2S 152.6ETropical storm
Jan 2, 00:0018.5S 152.9ETropical storm
Jan 2, 06:0019.1S 153.4ETropical storm
Jan 2, 12:0019.7S 154.0ETropical storm
Jan 2, 18:0020.4S 154.4ETropical storm
Jan 3, 00:0021.1S 154.8ETropical storm
Jan 3, 06:0022.5S 155.9ETropical storm
Jan 3, 12:0023.8S 157.5ETropical storm
Jan 3, 18:0024.6S 159.5ETropical storm

Other South Pacific storms of 1947

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.