Typhoon Dinah (1971)

Typhoon Dinah reached Category 2 in the Western Pacific between May 21, 1971 and May 31, 1971, with a lowest pressure of 960 mb, and made landfall.

Track and intensity

The whole track of Typhoon Dinah, 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: May 21, 1971 to May 31, 1971
Peak strength: Category 2, 90 kt (104 mph)
Lowest pressure: 960 mb (28.35 inHg)
Landfall: Yes
Accumulated cyclone energy: 7.9
Identifier: WP081971

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)	Position	Wind	Pressure	Status
May 21, 00:00	7.2N 156.0E			Tropical storm
May 21, 06:00	7.5N 154.5E			Tropical storm
May 21, 12:00	7.8N 153.0E			Tropical storm
May 21, 18:00	8.0N 151.5E			Tropical storm
May 22, 00:00	8.2N 150.0E			Tropical storm
May 22, 06:00	8.4N 148.3E			Tropical storm
May 22, 12:00	8.5N 146.5E			Tropical storm
May 22, 18:00	8.6N 144.9E			Tropical storm
May 23, 00:00	8.7N 143.0E			Tropical storm
May 23, 06:00	9.0N 140.4E		1006 mb	Tropical storm
May 23, 12:00	9.4N 138.3E		1007 mb	Tropical storm
May 23, 18:00	9.7N 136.8E		1006 mb	Mixed
May 24, 00:00	10.1N 135.6E		1006 mb	Mixed
May 24, 06:00	10.4N 134.3E		1004 mb	Mixed
May 24, 12:00	10.8N 132.9E		1004 mb	Mixed
May 24, 18:00	11.2N 131.6E		1004 mb	Mixed
May 25, 00:00	11.6N 130.2E		1000 mb	Tropical storm
May 25, 06:00	12.1N 129.2E	55 kt	998 mb	Tropical storm
May 25, 12:00	12.1N 127.6E	70 kt	985 mb	Tropical storm
May 25, 18:00	12.2N 126.4E	90 kt	970 mb	Tropical storm
May 26, 00:00	12.5N 125.2E	85 kt	965 mb	Tropical storm
May 26, 06:00	13.2N 123.5E	80 kt	960 mb	Tropical storm
May 26, 12:00	13.6N 122.0E	75 kt	970 mb	Tropical storm
May 26, 18:00	13.8N 120.6E	65 kt	978 mb	Tropical storm
May 27, 00:00	14.2N 119.2E	55 kt	985 mb	Tropical storm
May 27, 06:00	14.8N 117.9E	60 kt	990 mb	Tropical storm
May 27, 12:00	15.8N 116.7E	80 kt	980 mb	Tropical storm
May 27, 18:00	16.5N 115.2E	70 kt	980 mb	Tropical storm
May 28, 00:00	17.2N 114.1E	65 kt	985 mb	Tropical storm
May 28, 06:00	17.7N 113.1E	60 kt	990 mb	Tropical storm
May 28, 12:00	18.1N 112.4E	55 kt	995 mb	Tropical storm
May 28, 18:00	18.5N 111.6E	50 kt	996 mb	Tropical storm
May 29, 00:00	18.9N 110.9E	45 kt	996 mb	Tropical storm
May 29, 06:00	19.4N 110.3E	40 kt	998 mb	Tropical storm
May 29, 12:00	19.9N 109.6E	35 kt	998 mb	Tropical storm
May 29, 18:00	20.5N 109.1E	35 kt	998 mb	Tropical storm
May 30, 00:00	21.2N 108.8E	35 kt	998 mb	Tropical storm
May 30, 06:00	21.9N 108.5E	35 kt	1000 mb	Tropical storm
May 30, 12:00	21.8N 108.3E		1002 mb	Tropical storm
May 30, 18:00	22.1N 108.6E		1006 mb	Tropical storm
May 31, 00:00	22.6N 108.8E		1006 mb	Tropical storm
May 31, 06:00	23.4N 108.1E			Disturbance

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.