The 1991 season

Typhoon Nat (1991)

Typhoon Nat reached Category 3 in the Western Pacific between September 14, 1991 and October 3, 1991, with a lowest pressure of 950 mb, and made landfall.

Radar

Reflectivity now over Typhoon Nat. Open it to see storms, cones and warnings on the map.

Open the live radar with storms, cones and warnings

Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.

The storm

Basin
Western Pacific
Dates
September 14, 1991 to October 3, 1991
Peak strength
Category 3, 110 kt (127 mph)
Lowest pressure
950 mb (28.05 inHg)
Landfall
Yes
Accumulated cyclone energy
19.4
Fastest the center moved
20 kt (23 mph)
Identifier
WP221991

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
Sep 14, 00:0016.4N 130.1E1004 mbTropical storm
Sep 14, 06:0016.9N 129.7E1004 mbTropical storm
Sep 14, 12:0017.6N 128.8E1004 mbTropical storm
Sep 14, 18:0018.3N 127.8E1004 mbTropical storm
Sep 15, 00:0019.5N 124.0E25 kt1004 mbTropical storm
Sep 15, 06:0019.8N 123.4E25 kt1004 mbTropical storm
Sep 15, 12:0020.0N 122.7E25 kt1004 mbTropical storm
Sep 15, 18:0020.4N 122.0E30 kt1002 mbTropical storm
Sep 16, 00:0020.5N 121.3E25 kt1002 mbTropical storm
Sep 16, 06:0020.6N 120.4E30 kt998 mbTropical storm
Sep 16, 12:0020.6N 119.6E35 kt998 mbTropical storm
Sep 16, 18:0020.5N 119.0E40 kt998 mbTropical storm
Sep 17, 00:0020.3N 118.6E40 kt996 mbTropical storm
Sep 17, 06:0020.0N 118.4E40 kt996 mbTropical storm
Sep 17, 12:0019.7N 118.5E35 kt996 mbTropical storm
Sep 17, 18:0019.5N 118.7E35 kt996 mbTropical storm
Sep 18, 00:0019.4N 119.1E35 kt994 mbTropical storm
Sep 18, 06:0019.5N 119.6E40 kt994 mbTropical storm
Sep 18, 12:0019.7N 120.1E40 kt994 mbTropical storm
Sep 18, 18:0019.9N 120.6E40 kt994 mbTropical storm
Sep 19, 00:0020.1N 121.2E40 kt994 mbTropical storm
Sep 19, 06:0020.3N 121.8E35 kt994 mbTropical storm
Sep 19, 12:0020.5N 122.5E35 kt994 mbTropical storm
Sep 19, 18:0020.7N 123.2E35 kt994 mbTropical storm
Sep 20, 00:0020.9N 123.8E40 kt994 mbTropical storm
Sep 20, 06:0021.0N 124.3E45 kt992 mbTropical storm
Sep 20, 12:0021.1N 124.7E50 kt990 mbTropical storm
Sep 20, 18:0021.2N 125.0E55 kt990 mbTropical storm
Sep 21, 00:0021.3N 125.3E60 kt985 mbTropical storm
Sep 21, 06:0021.4N 125.6E70 kt970 mbTropical storm
Sep 21, 12:0021.5N 125.2E85 kt965 mbTropical storm
Sep 21, 18:0021.5N 124.7E95 kt960 mbTropical storm
Sep 22, 00:0021.6N 124.1E105 kt955 mbTropical storm
Sep 22, 06:0021.7N 123.5E110 kt950 mbTropical storm
Sep 22, 12:0021.8N 122.6E110 kt950 mbTropical storm
Sep 22, 18:0021.9N 121.6E105 kt950 mbTropical storm
Sep 23, 00:0022.1N 120.7E105 kt960 mbTropical storm
Sep 23, 06:0022.3N 120.0E90 kt965 mbTropical storm
Sep 23, 12:0022.5N 119.5E70 kt975 mbTropical storm
Sep 23, 18:0022.6N 119.0E60 kt980 mbTropical storm
Sep 24, 00:0022.6N 118.6E55 kt985 mbTropical storm
Sep 24, 06:0022.5N 118.1E50 kt990 mbTropical storm
Sep 24, 12:0022.0N 117.6E45 kt994 mbTropical storm
Sep 24, 18:0020.9N 117.1E45 kt992 mbTropical storm
Sep 25, 00:0019.9N 116.8E45 kt992 mbTropical storm
Sep 25, 06:0019.2N 116.6E45 kt992 mbTropical storm
Sep 25, 12:0018.8N 116.4E40 kt992 mbTropical storm
Sep 25, 18:0018.2N 116.1E40 kt996 mbTropical storm
Sep 26, 00:0017.6N 116.0E35 kt996 mbTropical storm
Sep 26, 06:0016.8N 116.0E35 kt998 mbTropical storm
Sep 26, 12:0016.3N 116.2E30 kt998 mbTropical storm
Sep 26, 18:0016.0N 116.5E30 kt1000 mbTropical storm
Sep 27, 00:0015.7N 117.0E30 kt1004 mbTropical storm
Sep 27, 06:0015.8N 117.3E30 kt1004 mbTropical storm
Sep 27, 12:0015.9N 117.5E30 kt1002 mbTropical storm
Sep 27, 18:0016.1N 117.7E30 kt1002 mbTropical storm
Sep 28, 00:0016.3N 117.5E35 kt1002 mbTropical storm
Sep 28, 06:0016.4N 117.3E40 kt996 mbTropical storm
Sep 28, 12:0016.5N 116.9E40 kt996 mbTropical storm
Sep 28, 18:0016.6N 116.6E45 kt996 mbTropical storm
Sep 29, 00:0016.9N 116.5E50 kt992 mbTropical storm
Sep 29, 06:0017.2N 116.5E50 kt985 mbTropical storm
Sep 29, 12:0017.5N 116.5E55 kt980 mbTropical storm
Sep 29, 18:0018.2N 116.6E55 kt980 mbTropical storm
Sep 30, 00:0018.9N 117.0E55 kt980 mbTropical storm
Sep 30, 06:0019.6N 117.3E60 kt975 mbTropical storm
Sep 30, 12:0020.4N 117.5E60 kt975 mbTropical storm
Sep 30, 18:0021.3N 117.7E60 kt975 mbTropical storm
Oct 1, 00:0022.1N 117.6E60 kt975 mbTropical storm
Oct 1, 06:0022.8N 117.5E65 kt970 mbTropical storm
Oct 1, 12:0023.6N 117.3E65 kt975 mbTropical storm
Oct 1, 18:0024.2N 117.0E50 kt985 mbTropical storm
Oct 2, 00:0025.0N 116.7E35 kt1008 mbTropical storm
Oct 2, 06:0025.6N 116.1E25 kt1008 mbTropical storm
Oct 2, 12:0026.5N 116.0E1010 mbMixed
Oct 2, 18:0026.8N 116.1E1010 mbMixed
Oct 3, 00:0027.7N 116.3E1012 mbTropical storm
Oct 3, 06:0027.9N 116.9E1008 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.