Typhoon Clara (1970)

Typhoon Clara reached Category 2 in the Western Pacific between August 25, 1970 and September 4, 1970, with a lowest pressure of 960 mb.

Track and intensity

The whole track of Typhoon Clara, colored by strength, with the other storms of the 1970 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 25, 1970 to September 4, 1970
Peak strength: Category 2, 85 kt (98 mph)
Lowest pressure: 960 mb (28.35 inHg)
Landfall: No; closest approach 128 km (80 mi)
Accumulated cyclone energy: 16.9
Identifier: WP111970

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
Aug 25, 00:00	28.0N 154.0E		1008 mb	Tropical storm
Aug 25, 06:00	28.7N 153.2E		1008 mb	Tropical storm
Aug 25, 12:00	29.5N 151.8E		1006 mb	Tropical storm
Aug 25, 18:00	30.1N 150.1E		1004 mb	Tropical storm
Aug 26, 00:00	30.4N 148.8E		1000 mb	Tropical storm
Aug 26, 06:00	30.6N 147.5E	40 kt	995 mb	Tropical storm
Aug 26, 12:00	31.0N 146.6E	45 kt	990 mb	Tropical storm
Aug 26, 18:00	31.5N 145.9E	50 kt	985 mb	Tropical storm
Aug 27, 00:00	31.9N 145.0E	60 kt	980 mb	Tropical storm
Aug 27, 06:00	31.9N 144.3E	70 kt	975 mb	Tropical storm
Aug 27, 12:00	32.2N 143.8E	75 kt	975 mb	Tropical storm
Aug 27, 18:00	32.7N 143.4E	80 kt	975 mb	Tropical storm
Aug 28, 00:00	33.5N 143.0E	80 kt	970 mb	Tropical storm
Aug 28, 06:00	34.1N 142.7E	85 kt	970 mb	Tropical storm
Aug 28, 12:00	34.7N 142.4E	80 kt	970 mb	Tropical storm
Aug 28, 18:00	35.2N 142.3E	75 kt	975 mb	Tropical storm
Aug 29, 00:00	35.7N 142.4E	80 kt	970 mb	Tropical storm
Aug 29, 06:00	36.0N 142.8E	85 kt	970 mb	Tropical storm
Aug 29, 12:00	36.2N 143.8E	80 kt	975 mb	Tropical storm
Aug 29, 18:00	36.1N 145.4E	80 kt	975 mb	Tropical storm
Aug 30, 00:00	35.7N 147.0E	80 kt	975 mb	Tropical storm
Aug 30, 06:00	35.5N 149.2E	75 kt	970 mb	Tropical storm
Aug 30, 12:00	34.9N 151.1E	80 kt	970 mb	Tropical storm
Aug 30, 18:00	34.4N 152.4E	80 kt	970 mb	Tropical storm
Aug 31, 00:00	34.3N 153.8E	85 kt	960 mb	Tropical storm
Aug 31, 06:00	34.3N 155.1E	85 kt	965 mb	Tropical storm
Aug 31, 12:00	34.4N 156.2E	80 kt	975 mb	Tropical storm
Aug 31, 18:00	34.6N 157.1E	75 kt	975 mb	Tropical storm
Sep 1, 00:00	34.8N 158.0E	70 kt	975 mb	Tropical storm
Sep 1, 06:00	35.2N 159.3E	70 kt	975 mb	Tropical storm
Sep 1, 12:00	35.4N 160.7E	70 kt	980 mb	Tropical storm
Sep 1, 18:00	35.3N 162.0E	70 kt	980 mb	Tropical storm
Sep 2, 00:00	34.9N 163.3E	75 kt	980 mb	Tropical storm
Sep 2, 06:00	34.7N 164.3E	70 kt	985 mb	Tropical storm
Sep 2, 12:00	34.7N 165.8E	60 kt	990 mb	Tropical storm
Sep 2, 18:00	34.8N 166.3E	50 kt	992 mb	Tropical storm
Sep 3, 00:00	35.0N 167.5E	40 kt	992 mb	Tropical storm
Sep 3, 06:00	35.4N 168.8E	35 kt	992 mb	Tropical storm
Sep 3, 12:00	35.7N 170.3E		992 mb	Tropical storm
Sep 3, 18:00	36.1N 171.4E		992 mb	Tropical storm
Sep 4, 00:00	36.8N 172.5E		992 mb	Tropical storm
Sep 4, 06:00	37.0N 173.9E		995 mb	Tropical storm
Sep 4, 12:00	37.1N 175.5E		995 mb	Tropical storm
Sep 4, 18:00	37.0N 176.9E		995 mb	Mixed

Other Western Pacific storms of 1970

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.