The 1999 season

Tropical Storm Iris (1999)

Tropical Storm Iris peaked at 35 kt in the Western Pacific between February 13, 1999 and February 19, 1999.

Track and intensity

The whole track of Tropical Storm Iris, 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
February 13, 1999 to February 19, 1999
Peak strength
Tropical Storm, 35 kt (40 mph)
Landfall
No; closest approach 272 km (169 mi)
Accumulated cyclone energy
0.5
Identifier
WP021999

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Feb 13, 18:0011.2N 137.7E20 ktNot reported
Feb 14, 00:0011.0N 137.3E20 ktNot reported
Feb 14, 06:0011.0N 136.9E20 ktNot reported
Feb 14, 12:0011.2N 136.5E20 ktNot reported
Feb 14, 18:0011.2N 136.1E25 ktNot reported
Feb 15, 00:0011.2N 135.7E20 ktNot reported
Feb 15, 06:0011.3N 135.2E20 ktNot reported
Feb 15, 12:0011.4N 134.6E20 ktNot reported
Feb 15, 18:0011.5N 134.0E20 ktNot reported
Feb 16, 00:0011.7N 133.3E25 ktTropical storm
Feb 16, 06:0011.8N 133.0E25 ktTropical storm
Feb 16, 12:0011.8N 132.6E30 ktTropical storm
Feb 16, 18:0011.8N 131.9E30 ktTropical storm
Feb 17, 00:0012.0N 130.7E35 ktTropical storm
Feb 17, 06:0012.3N 129.2E35 ktTropical storm
Feb 17, 12:0012.7N 128.4E35 ktTropical storm
Feb 17, 18:0013.0N 127.8E35 ktTropical storm
Feb 18, 00:0013.3N 127.4E30 ktTropical storm
Feb 18, 06:0013.6N 127.0E30 ktTropical storm
Feb 18, 12:0013.9N 126.7E30 ktTropical storm
Feb 18, 18:0014.2N 126.3E25 ktTropical storm
Feb 19, 00:0014.2N 126.3E15 ktTropical storm

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.