The 1973 season

Typhoon Louise (1973)

Typhoon Louise reached Category 1 in the Western Pacific between August 30, 1973 and September 9, 1973, with a lowest pressure of 975 mb, and made landfall.

Track and intensity

The whole track of Typhoon Louise, colored by strength, with the other storms of the 1973 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
August 30, 1973 to September 9, 1973
Peak strength
Category 1, 75 kt (86 mph)
Lowest pressure
975 mb (28.79 inHg)
Landfall
Yes
Accumulated cyclone energy
6.4
Identifier
WP151973

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
Aug 30, 00:0012.0N 136.0EDisturbance
Aug 30, 06:0012.4N 134.5E1008 mbMixed
Aug 30, 12:0013.0N 133.0E1008 mbMixed
Aug 30, 18:0013.5N 131.5E1008 mbMixed
Aug 31, 00:0013.9N 130.0E1008 mbMixed
Aug 31, 06:0014.3N 128.9E1008 mbMixed
Aug 31, 12:0014.7N 127.9E1008 mbMixed
Aug 31, 18:0015.2N 127.1E1008 mbMixed
Sep 1, 00:0015.6N 126.2E1008 mbTropical storm
Sep 1, 06:0016.1N 125.4E1008 mbTropical storm
Sep 1, 12:0016.6N 124.8E1006 mbTropical storm
Sep 1, 18:0017.0N 124.2E1006 mbTropical storm
Sep 2, 00:0017.5N 123.1E30 kt1004 mbTropical storm
Sep 2, 06:0018.0N 122.7E30 kt1004 mbTropical storm
Sep 2, 12:0018.4N 122.4E30 kt1004 mbTropical storm
Sep 2, 18:0018.8N 122.0E40 kt1000 mbTropical storm
Sep 3, 00:0019.0N 121.3E60 kt998 mbTropical storm
Sep 3, 06:0019.2N 120.7E50 kt998 mbTropical storm
Sep 3, 12:0019.0N 120.2E40 kt998 mbTropical storm
Sep 3, 18:0018.9N 119.8E40 kt996 mbTropical storm
Sep 4, 00:0019.1N 119.4E45 kt996 mbTropical storm
Sep 4, 06:0019.3N 118.7E50 kt996 mbTropical storm
Sep 4, 12:0019.5N 118.1E50 kt992 mbTropical storm
Sep 4, 18:0019.7N 117.2E55 kt990 mbTropical storm
Sep 5, 00:0019.9N 116.2E65 kt985 mbTropical storm
Sep 5, 06:0019.9N 115.0E70 kt980 mbTropical storm
Sep 5, 12:0019.8N 114.1E75 kt975 mbTropical storm
Sep 5, 18:0019.9N 113.3E75 kt975 mbTropical storm
Sep 6, 00:0020.0N 112.3E70 kt975 mbTropical storm
Sep 6, 06:0020.3N 111.4E65 kt975 mbTropical storm
Sep 6, 12:0020.7N 110.4E60 kt980 mbTropical storm
Sep 6, 18:0020.9N 109.3E60 kt985 mbTropical storm
Sep 7, 00:0020.9N 108.2E60 kt990 mbTropical storm
Sep 7, 06:0020.8N 106.9E50 kt990 mbTropical storm
Sep 7, 12:0021.2N 107.8E30 kt990 mbTropical storm
Sep 7, 18:0021.6N 106.9E25 kt995 mbMixed
Sep 8, 00:0022.0N 106.0E20 kt1004 mbMixed
Sep 8, 06:0021.5N 104.5E20 kt1006 mbTropical storm
Sep 8, 12:0021.0N 103.0E15 ktTropical storm
Sep 8, 18:0020.0N 101.5E15 ktTropical storm
Sep 9, 00:0019.0N 100.0E15 ktTropical storm

Other Western Pacific storms of 1973

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.