The 1986 season

Unnamed tropical depression (1986)

Unnamed tropical depression peaked at 30 kt in the South Pacific between December 11, 1985 and December 16, 1985.

Track and intensity

The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1986 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 11, 1985 to December 16, 1985
Peak strength
Tropical Depression, 30 kt (35 mph)
Landfall
No; closest approach 158 km (98 mi)
Accumulated cyclone energy
0.0
Identifier
SH031986

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 11, 18:0012.2S 144.8E20 ktTropical storm
Dec 12, 00:0013.2S 146.2E25 ktTropical storm
Dec 12, 06:0014.1S 147.6E25 ktTropical storm
Dec 12, 12:0014.8S 149.1E25 ktTropical storm
Dec 12, 18:0015.2S 150.5E25 ktTropical storm
Dec 13, 00:0015.4S 151.5E25 ktTropical storm
Dec 13, 06:0015.3S 152.3E25 ktTropical storm
Dec 13, 12:0015.1S 153.3E25 ktTropical storm
Dec 13, 18:0014.9S 154.2E25 ktTropical storm
Dec 14, 00:0014.7S 154.8E25 ktTropical storm
Dec 14, 06:0014.6S 155.5E25 ktTropical storm
Dec 14, 12:0014.5S 156.1E25 ktTropical storm
Dec 14, 18:0014.5S 156.8E25 ktTropical storm
Dec 15, 00:0014.3S 157.5E25 ktTropical storm
Dec 15, 06:0014.1S 158.4E30 ktTropical storm
Dec 15, 12:0014.0S 159.4E30 ktTropical storm
Dec 15, 18:0013.9S 160.4E30 ktTropical storm
Dec 16, 00:0013.8S 161.5E25 ktTropical storm
Dec 16, 06:0013.6S 162.6E20 ktTropical storm

Other South Pacific storms of 1986

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.