The 1971 season

Typhoon Agnes (1971)

Typhoon Agnes reached Category 1 in the Western Pacific between September 8, 1971 and September 19, 1971, with a lowest pressure of 975 mb, and made landfall.

Track and intensity

The whole track of Typhoon Agnes, colored by strength, with the other storms of the 1971 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
September 8, 1971 to September 19, 1971
Peak strength
Category 1, 75 kt (86 mph)
Lowest pressure
975 mb (28.79 inHg)
Landfall
Yes
Accumulated cyclone energy
4.5
Identifier
WP261971

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 8, 06:0017.8N 127.3ETropical storm
Sep 8, 12:0019.2N 127.4EDisturbance
Sep 8, 18:0020.4N 126.8EDisturbance
Sep 9, 00:0020.9N 126.7EDisturbance
Sep 9, 06:0021.3N 126.9EDisturbance
Sep 9, 12:0021.7N 127.2EDisturbance
Sep 9, 18:0022.0N 127.5EDisturbance
Sep 10, 00:0022.2N 128.0ETropical storm
Sep 10, 06:0021.7N 128.5E1004 mbTropical storm
Sep 10, 12:0021.1N 129.0E1004 mbTropical storm
Sep 10, 18:0021.2N 129.7E1004 mbTropical storm
Sep 11, 00:0021.4N 129.9E1004 mbTropical storm
Sep 11, 06:0021.2N 130.0E1000 mbMixed
Sep 11, 12:0021.0N 130.8E1000 mbMixed
Sep 11, 18:0021.3N 131.3E1000 mbMixed
Sep 12, 00:0021.2N 131.9E1000 mbMixed
Sep 12, 06:0020.8N 132.0E998 mbMixed
Sep 12, 12:0020.5N 132.0E998 mbMixed
Sep 12, 18:0020.2N 131.9E1000 mbTropical storm
Sep 13, 00:0019.9N 131.6E1000 mbTropical storm
Sep 13, 06:0019.7N 131.4E1000 mbTropical storm
Sep 13, 12:0019.6N 130.8E1000 mbTropical storm
Sep 13, 18:0019.4N 130.3E1000 mbTropical storm
Sep 14, 00:0019.3N 129.5E1000 mbTropical storm
Sep 14, 06:0019.1N 128.8E1000 mbTropical storm
Sep 14, 12:0018.8N 128.2E998 mbTropical storm
Sep 14, 18:0018.5N 127.5E996 mbTropical storm
Sep 15, 00:0018.4N 126.9E996 mbTropical storm
Sep 15, 06:0018.8N 126.3E35 kt996 mbTropical storm
Sep 15, 12:0019.0N 126.0E35 kt996 mbTropical storm
Sep 15, 18:0019.2N 125.8E40 kt996 mbTropical storm
Sep 16, 00:0019.5N 125.7E40 kt992 mbTropical storm
Sep 16, 06:0019.8N 125.7E40 kt992 mbTropical storm
Sep 16, 12:0020.1N 125.7E45 kt990 mbTropical storm
Sep 16, 18:0020.4N 125.6E50 kt990 mbTropical storm
Sep 17, 00:0020.9N 125.4E55 kt985 mbTropical storm
Sep 17, 06:0021.6N 125.1E60 kt980 mbTropical storm
Sep 17, 12:0022.2N 124.6E65 kt980 mbTropical storm
Sep 17, 18:0022.7N 124.0E65 kt980 mbTropical storm
Sep 18, 00:0023.1N 123.3E70 kt980 mbTropical storm
Sep 18, 06:0023.6N 122.5E75 kt975 mbTropical storm
Sep 18, 12:0024.1N 121.6E55 kt975 mbTropical storm
Sep 18, 18:0024.3N 120.7E45 kt985 mbTropical storm
Sep 19, 00:0024.7N 119.8E40 kt990 mbTropical storm
Sep 19, 06:0025.2N 118.8E35 kt995 mbTropical storm
Sep 19, 12:0025.0N 117.9E1000 mbMixed
Sep 19, 18:0024.4N 117.8EDisturbance

Other Western Pacific storms of 1971

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.