The 1970 season

Tropical Storm Ruth (1970)

Tropical Storm Ruth peaked at 40 kt in the Western Pacific between November 20, 1970 and November 29, 1970, with a lowest pressure of 996 mb.

Track and intensity

The whole track of Tropical Storm Ruth, 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
November 20, 1970 to November 29, 1970
Peak strength
Tropical Storm, 40 kt (46 mph)
Lowest pressure
996 mb (29.41 inHg)
Landfall
No; closest approach 10 km (6 mi)
Accumulated cyclone energy
0.3
Identifier
WP241970

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
Nov 20, 00:005.1N 143.0EDisturbance
Nov 20, 06:005.1N 141.8EDisturbance
Nov 20, 12:005.1N 140.5EDisturbance
Nov 20, 18:005.1N 139.0EDisturbance
Nov 21, 00:005.1N 137.5EDisturbance
Nov 21, 06:005.0N 136.0EDisturbance
Nov 21, 12:005.0N 134.5EDisturbance
Nov 21, 18:005.0N 133.2EDisturbance
Nov 22, 00:005.0N 132.0EDisturbance
Nov 22, 06:005.0N 130.8EDisturbance
Nov 22, 12:005.0N 129.6EDisturbance
Nov 22, 18:005.0N 128.1EDisturbance
Nov 23, 00:005.0N 126.5EDisturbance
Nov 23, 06:005.0N 124.8EDisturbance
Nov 23, 12:005.1N 123.0EDisturbance
Nov 23, 18:005.4N 121.4EDisturbance
Nov 24, 00:006.0N 119.8EDisturbance
Nov 24, 06:006.9N 118.1EDisturbance
Nov 24, 12:007.8N 116.5ETropical storm
Nov 24, 18:008.5N 115.4ETropical storm
Nov 25, 00:009.0N 114.5ETropical storm
Nov 25, 06:009.4N 113.7ETropical storm
Nov 25, 12:009.5N 113.4EMixed
Nov 25, 18:009.7N 113.1ETropical storm
Nov 26, 00:009.8N 112.6E1004 mbTropical storm
Nov 26, 06:009.8N 111.9E1000 mbTropical storm
Nov 26, 12:009.6N 111.1E1000 mbTropical storm
Nov 26, 18:009.3N 110.1E1000 mbTropical storm
Nov 27, 00:009.0N 109.3E998 mbTropical storm
Nov 27, 06:008.8N 108.4E40 kt996 mbTropical storm
Nov 27, 12:008.5N 107.2E40 kt998 mbTropical storm
Nov 27, 18:008.4N 106.1E25 kt1000 mbTropical storm
Nov 28, 00:008.3N 105.3E1002 mbTropical storm
Nov 28, 06:008.3N 104.3E1002 mbTropical storm
Nov 28, 12:008.4N 103.4E1002 mbTropical storm
Nov 28, 18:008.5N 102.5E1004 mbTropical storm
Nov 29, 00:008.8N 101.7E1004 mbTropical storm
Nov 29, 06:009.1N 100.8E1004 mbMixed
Nov 29, 12:009.4N 99.9EMixed
Nov 29, 18:009.9N 99.2ETropical storm

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.