The 1991 season

Tropical Storm Vanessa (1991)

Tropical Storm Vanessa peaked at 45 kt in the Western Pacific between April 20, 1991 and April 28, 1991, with a lowest pressure of 994 mb, and made landfall.

Track and intensity

The whole track of Tropical Storm Vanessa, colored by strength, with the other storms of the 1991 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 20, 1991 to April 28, 1991
Peak strength
Tropical Storm, 45 kt (52 mph)
Lowest pressure
994 mb (29.35 inHg)
Landfall
Yes
Accumulated cyclone energy
1.3
Identifier
WP031991

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
Apr 20, 12:003.9N 145.0E15 ktNot reported
Apr 20, 18:003.9N 143.8E15 ktNot reported
Apr 21, 00:003.9N 142.5E15 ktNot reported
Apr 21, 06:003.9N 141.2E15 ktNot reported
Apr 21, 12:003.9N 139.9E15 ktNot reported
Apr 21, 18:003.9N 138.6E15 ktNot reported
Apr 22, 00:004.0N 137.3E15 ktNot reported
Apr 22, 06:004.7N 136.2E15 ktNot reported
Apr 22, 12:005.6N 135.1E20 ktNot reported
Apr 22, 18:006.6N 134.0E20 ktNot reported
Apr 23, 00:007.4N 132.8E25 ktDisturbance
Apr 23, 06:007.8N 131.5E25 kt1006 mbMixed
Apr 23, 12:008.2N 130.2E25 kt1004 mbTropical storm
Apr 23, 18:008.5N 128.9E30 kt1004 mbTropical storm
Apr 24, 00:008.7N 127.7E30 kt1004 mbTropical storm
Apr 24, 06:008.9N 126.5E30 kt1002 mbTropical storm
Apr 24, 12:009.2N 125.2E30 kt1002 mbTropical storm
Apr 24, 18:009.5N 123.9E30 kt1002 mbTropical storm
Apr 25, 00:0010.0N 122.7E25 kt1004 mbTropical storm
Apr 25, 06:0010.5N 121.4E25 kt1004 mbTropical storm
Apr 25, 12:0011.0N 120.2E30 kt1006 mbTropical storm
Apr 25, 18:0011.3N 119.0E30 kt1004 mbTropical storm
Apr 26, 00:0011.6N 117.8E35 kt1002 mbTropical storm
Apr 26, 06:0011.9N 116.6E40 kt998 mbTropical storm
Apr 26, 12:0012.3N 115.4E40 kt996 mbTropical storm
Apr 26, 18:0012.7N 114.2E45 kt994 mbTropical storm
Apr 27, 00:0013.1N 113.0E45 kt994 mbTropical storm
Apr 27, 06:0013.7N 112.0E45 kt996 mbTropical storm
Apr 27, 12:0014.5N 111.2E40 kt998 mbTropical storm
Apr 27, 18:0015.5N 110.8E35 kt1002 mbTropical storm
Apr 28, 00:0016.6N 110.8E30 kt1004 mbTropical storm
Apr 28, 06:0017.8N 110.9E25 kt1006 mbTropical storm
Apr 28, 12:0019.0N 111.3E25 ktTropical storm
Apr 28, 18:0020.3N 111.7E25 ktTropical storm

Other Western Pacific storms of 1991

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.