The 1999 season

Unnamed tropical storm (1999)

Unnamed tropical storm peaked at 35 kt in the Western Pacific between April 5, 1999 and April 10, 1999, and made landfall.

Track and intensity

The whole track of Unnamed tropical storm, colored by strength, with the other storms of the 1999 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 5, 1999 to April 10, 1999
Peak strength
Tropical Storm, 35 kt (40 mph)
Landfall
Yes
Accumulated cyclone energy
0.1
Identifier
WP031999

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)PositionWindPressureStatus
Apr 5, 18:009.8N 135.8E20 ktNot reported
Apr 6, 00:0010.3N 134.8E20 ktNot reported
Apr 6, 06:0010.8N 133.9E25 ktNot reported
Apr 6, 12:0011.3N 133.2E25 ktNot reported
Apr 6, 18:0012.0N 133.1E25 ktNot reported
Apr 7, 00:0012.6N 133.0E25 ktNot reported
Apr 7, 06:0012.8N 132.8E30 ktNot reported
Apr 7, 12:0012.9N 132.5E30 ktNot reported
Apr 7, 18:0012.8N 132.4E30 ktNot reported
Apr 8, 00:0012.5N 131.6E30 ktNot reported
Apr 8, 06:0012.4N 130.8E30 ktNot reported
Apr 8, 12:0012.4N 129.6E30 ktNot reported
Apr 8, 18:0012.6N 128.4E35 ktNot reported
Apr 9, 00:0013.1N 126.6E30 ktNot reported
Apr 9, 06:0013.1N 125.6E30 ktNot reported
Apr 9, 12:0013.2N 124.6E30 ktNot reported
Apr 9, 18:0013.5N 123.8E25 ktNot reported
Apr 10, 00:0013.9N 123.3E20 ktNot reported

Other Western Pacific storms of 1999

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.