The 1998 season

Unnamed tropical depression (1998)

Unnamed tropical depression peaked at 25 kt in the Western Pacific between September 11, 1998 and September 14, 1998, and made landfall.

Track and intensity

The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1998 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
September 11, 1998 to September 14, 1998
Peak strength
Tropical Depression, 25 kt (29 mph)
Landfall
Yes
Accumulated cyclone energy
0.0
Identifier
WP091998

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Sep 11, 06:0020.2N 115.7ETropical storm
Sep 11, 12:0020.4N 115.4ETropical storm
Sep 11, 18:0020.4N 115.0ETropical storm
Sep 12, 00:0020.4N 114.6ETropical storm
Sep 12, 06:0020.4N 114.4ETropical storm
Sep 12, 12:0020.4N 114.0ETropical storm
Sep 12, 18:0020.1N 113.7E20 ktTropical storm
Sep 13, 00:0020.1N 112.6E25 ktTropical storm
Sep 13, 06:0020.1N 111.3E25 ktTropical storm
Sep 13, 12:0020.2N 109.8E25 ktTropical storm
Sep 13, 18:0020.4N 108.3E25 ktTropical storm
Sep 14, 00:0020.4N 107.2E25 ktTropical storm
Sep 14, 06:0020.3N 106.2E20 ktTropical storm
Sep 14, 12:0020.5N 105.3E15 ktTropical storm
Sep 14, 18:0021.0N 104.6E15 ktTropical storm

Other Western Pacific storms of 1998

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.