The 1991 season

Typhoon Caitlin (1991)

Typhoon Caitlin reached Category 2 in the Western Pacific between July 18, 1991 and July 30, 1991, with a lowest pressure of 940 mb.

Track and intensity

The whole track of Typhoon Caitlin, 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
July 18, 1991 to July 30, 1991
Peak strength
Category 2, 95 kt (109 mph)
Lowest pressure
940 mb (27.76 inHg)
Landfall
No; closest approach 49 km (30 mi)
Accumulated cyclone energy
14.4
Fastest the center moved
25 kt (29 mph)
Identifier
WP091991

Radar at RODN as it neared land, Jul 27, 12:00 UTC

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
Jul 18, 12:005.0N 157.0E15 ktNot reported
Jul 18, 18:005.4N 155.7E15 ktNot reported
Jul 19, 00:005.8N 154.4E15 ktNot reported
Jul 19, 06:006.2N 153.1E15 ktNot reported
Jul 19, 12:006.7N 151.8E20 ktNot reported
Jul 19, 18:007.1N 150.5E20 ktNot reported
Jul 20, 00:007.5N 149.1E20 ktNot reported
Jul 20, 06:008.0N 147.7E20 ktNot reported
Jul 20, 12:008.5N 146.3E20 ktNot reported
Jul 20, 18:009.0N 145.0E20 ktNot reported
Jul 21, 00:009.5N 143.7E20 ktNot reported
Jul 21, 06:0010.0N 142.5E20 ktNot reported
Jul 21, 12:0010.6N 141.3E20 ktTropical storm
Jul 21, 18:0011.1N 140.1E20 kt1006 mbTropical storm
Jul 22, 00:0011.6N 138.9E20 kt1004 mbTropical storm
Jul 22, 06:0012.1N 137.7E25 kt1004 mbTropical storm
Jul 22, 12:0012.5N 136.7E25 kt1004 mbTropical storm
Jul 22, 18:0012.9N 135.6E25 kt1004 mbTropical storm
Jul 23, 00:0013.3N 134.7E25 kt1002 mbTropical storm
Jul 23, 06:0013.7N 133.9E25 kt1002 mbTropical storm
Jul 23, 12:0014.0N 132.9E30 kt1002 mbTropical storm
Jul 23, 18:0014.2N 131.9E35 kt1000 mbTropical storm
Jul 24, 00:0014.4N 131.0E40 kt996 mbTropical storm
Jul 24, 06:0014.8N 130.3E45 kt994 mbTropical storm
Jul 24, 12:0015.5N 130.2E45 kt990 mbTropical storm
Jul 24, 18:0016.4N 130.2E45 kt985 mbTropical storm
Jul 25, 00:0017.5N 130.2E55 kt980 mbTropical storm
Jul 25, 06:0018.5N 129.8E60 kt980 mbTropical storm
Jul 25, 12:0019.4N 129.1E65 kt975 mbTropical storm
Jul 25, 18:0020.3N 128.4E65 kt970 mbTropical storm
Jul 26, 00:0021.3N 127.8E70 kt965 mbTropical storm
Jul 26, 06:0022.2N 127.4E75 kt965 mbTropical storm
Jul 26, 12:0023.1N 127.0E80 kt965 mbTropical storm
Jul 26, 18:0023.8N 126.7E85 kt960 mbTropical storm
Jul 27, 00:0024.4N 126.6E90 kt955 mbTropical storm
Jul 27, 06:0025.2N 126.5E90 kt950 mbTropical storm
Jul 27, 12:0026.1N 126.6E90 kt940 mbTropical storm
Jul 27, 18:0027.1N 126.7E95 kt940 mbTropical storm
Jul 28, 00:0028.2N 126.9E95 kt940 mbTropical storm
Jul 28, 06:0029.4N 127.1E95 kt940 mbTropical storm
Jul 28, 12:0030.5N 127.2E90 kt940 mbTropical storm
Jul 28, 18:0031.7N 127.5E90 kt940 mbTropical storm
Jul 29, 00:0033.0N 128.1E85 kt950 mbTropical storm
Jul 29, 06:0034.3N 129.1E75 kt955 mbTropical storm
Jul 29, 12:0035.8N 130.5E65 kt965 mbTropical storm
Jul 29, 18:0037.4N 132.0E65 kt970 mbTropical storm
Jul 30, 00:0039.1N 133.4E65 kt980 mbTropical storm
Jul 30, 06:0041.4N 135.2E50 kt985 mbTropical storm
Jul 30, 12:0043.0N 137.1E992 mbMixed

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.