The 1986 season

Unnamed tropical storm (1986)

Unnamed tropical storm peaked at 35 kt in the Western Pacific between August 28, 1986 and September 7, 1986, with a lowest pressure of 992 mb, and made landfall.

Track and intensity

The whole track of Unnamed tropical storm, 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
Western Pacific
Dates
August 28, 1986 to September 7, 1986
Peak strength
Tropical Storm, 35 kt (40 mph), ten-minute wind
Lowest pressure
992 mb (29.29 inHg)
Landfall
Yes
Accumulated cyclone energy
0.4
Identifier
1986240N24160

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 28, 06:0024.0N 160.0E1004 mbTropical storm
Aug 28, 12:0023.5N 160.0E1004 mbTropical storm
Aug 28, 18:0023.0N 160.0E1004 mbTropical storm
Aug 29, 00:0022.3N 160.2E1004 mbMixed
Aug 29, 06:0022.0N 159.8E1002 mbMixed
Aug 29, 12:0022.1N 159.1E1002 mbMixed
Aug 29, 18:0022.3N 158.2E1000 mbTropical storm
Aug 30, 00:0022.6N 157.1E1000 mbTropical storm
Aug 30, 06:0022.9N 155.6E998 mbTropical storm
Aug 30, 12:0023.3N 153.9E998 mbTropical storm
Aug 30, 18:0023.6N 152.2E998 mbTropical storm
Aug 31, 00:0024.1N 150.6E996 mbTropical storm
Aug 31, 06:0024.6N 149.3E996 mbTropical storm
Aug 31, 12:0025.2N 147.8E996 mbTropical storm
Aug 31, 18:0025.6N 146.3E996 mbTropical storm
Sep 1, 00:0026.1N 144.9E996 mbTropical storm
Sep 1, 06:0026.9N 143.4E994 mbTropical storm
Sep 1, 12:0027.7N 141.9E994 mbTropical storm
Sep 1, 18:0028.8N 140.8E994 mbTropical storm
Sep 2, 00:0029.8N 140.0E994 mbTropical storm
Sep 2, 06:0030.9N 139.4E35 kt992 mbTropical storm
Sep 2, 12:0032.0N 138.7E35 kt992 mbTropical storm
Sep 2, 18:0033.4N 138.3E35 kt992 mbTropical storm
Sep 3, 00:0034.7N 139.1E996 mbTropical storm
Sep 3, 06:0036.1N 139.9E997 mbTropical storm
Sep 3, 12:0038.1N 141.1E998 mbTropical storm
Sep 3, 18:0040.5N 142.8E998 mbTropical storm
Sep 4, 00:0041.0N 145.0E998 mbExtratropical
Sep 4, 06:0041.5N 147.5E996 mbExtratropical
Sep 4, 12:0042.0N 150.0E996 mbExtratropical
Sep 4, 18:0042.0N 151.5E996 mbExtratropical
Sep 5, 00:0041.5N 153.0E996 mbExtratropical
Sep 5, 06:0041.0N 155.0E996 mbExtratropical
Sep 5, 12:0040.0N 157.0E1000 mbExtratropical
Sep 5, 18:0039.5N 159.0E1000 mbExtratropical
Sep 6, 00:0039.0N 161.0E1000 mbExtratropical
Sep 6, 06:0039.0N 165.0E1000 mbExtratropical
Sep 6, 12:0039.0N 168.0E1002 mbExtratropical
Sep 6, 18:0039.0N 171.0E1002 mbExtratropical
Sep 7, 00:0039.0N 173.0E1004 mbExtratropical
Sep 7, 06:0039.0N 175.0E1008 mbExtratropical
Sep 7, 12:0039.0N 177.0E1012 mbExtratropical
Sep 7, 18:0039.0N 179.0E1016 mbExtratropical

Other Western 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. This storm’s winds are ten-minute averages from its regional agency. They read about 12 percent lower than the one-minute winds US agencies use, so a Saffir-Simpson category is not given for it.

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.