The 1991 season

Typhoon Yunya (1991)

Typhoon Yunya reached Category 3 in the Western Pacific between June 11, 1991 and June 17, 1991, with a lowest pressure of 950 mb, and made landfall.

Track and intensity

The whole track of Typhoon Yunya, 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
June 11, 1991 to June 17, 1991
Peak strength
Category 3, 105 kt (121 mph)
Lowest pressure
950 mb (28.05 inHg)
Landfall
Yes
Accumulated cyclone energy
6.9
Fastest the center moved
14 kt (16 mph)
Identifier
WP051991

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
Jun 11, 18:0011.0N 127.2E20 ktTropical storm
Jun 12, 00:0011.4N 127.0E20 kt1008 mbTropical storm
Jun 12, 06:0011.9N 126.7E25 kt1006 mbTropical storm
Jun 12, 12:0012.4N 126.4E35 kt1002 mbTropical storm
Jun 12, 18:0012.9N 126.0E45 kt998 mbTropical storm
Jun 13, 00:0013.3N 125.6E55 kt990 mbTropical storm
Jun 13, 06:0013.5N 125.2E65 kt975 mbTropical storm
Jun 13, 12:0013.7N 124.9E75 kt965 mbTropical storm
Jun 13, 18:0013.9N 124.6E85 kt960 mbTropical storm
Jun 14, 00:0014.2N 124.2E95 kt950 mbTropical storm
Jun 14, 06:0014.5N 123.6E105 kt950 mbTropical storm
Jun 14, 12:0014.8N 123.0E95 kt955 mbTropical storm
Jun 14, 18:0015.0N 122.3E85 kt965 mbTropical storm
Jun 15, 00:0015.4N 121.7E65 kt980 mbTropical storm
Jun 15, 06:0015.8N 120.8E45 kt990 mbTropical storm
Jun 15, 12:0016.7N 120.2E40 kt996 mbTropical storm
Jun 15, 18:0017.7N 120.0E35 kt1000 mbTropical storm
Jun 16, 00:0018.8N 119.9E30 kt1000 mbTropical storm
Jun 16, 06:0020.1N 120.2E30 kt1000 mbTropical storm
Jun 16, 12:0021.1N 120.6E30 kt1002 mbTropical storm
Jun 16, 18:0021.9N 121.0E25 kt1002 mbTropical storm
Jun 17, 00:0022.6N 121.5E20 kt1002 mbTropical storm
Jun 17, 06:0022.4N 121.3E1002 mbTropical 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.