The 1977 season

Tropical Storm Ruth (1977)

Tropical Storm Ruth peaked at 60 kt in the Western Pacific between June 10, 1977 and June 21, 1977, with a lowest pressure of 975 mb, and made landfall.

Track and intensity

The whole track of Tropical Storm Ruth, colored by strength, with the other storms of the 1977 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
June 10, 1977 to June 21, 1977
Peak strength
Tropical Storm, 60 kt (69 mph)
Lowest pressure
975 mb (28.79 inHg)
Landfall
Yes
Accumulated cyclone energy
2.8
Identifier
WP031977

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
Jun 10, 00:006.0N 134.0EMixed
Jun 10, 06:006.0N 132.0EMixed
Jun 10, 12:006.8N 130.0EMixed
Jun 10, 18:007.5N 129.0EMixed
Jun 11, 00:008.3N 128.1EMixed
Jun 11, 06:008.8N 127.4EMixed
Jun 11, 12:009.5N 126.7EMixed
Jun 11, 18:0010.5N 126.1EMixed
Jun 12, 00:0011.0N 125.5EMixed
Jun 12, 06:0011.1N 123.5ETropical storm
Jun 12, 12:0011.5N 121.8ETropical storm
Jun 12, 18:0012.1N 120.6ETropical storm
Jun 13, 00:0012.8N 119.5E1008 mbTropical storm
Jun 13, 06:0013.5N 118.5E1004 mbTropical storm
Jun 13, 12:0014.1N 117.8E1004 mbTropical storm
Jun 13, 18:0014.8N 117.4E1000 mbTropical storm
Jun 14, 00:0015.5N 117.1E40 kt992 mbTropical storm
Jun 14, 06:0016.0N 116.9E40 kt990 mbTropical depression
Jun 14, 12:0016.8N 116.6E50 kt985 mbTropical storm
Jun 14, 18:0017.7N 116.4E55 kt980 mbTropical storm
Jun 15, 00:0018.6N 116.4E60 kt975 mbTropical storm
Jun 15, 06:0019.3N 116.7E60 kt980 mbTropical storm
Jun 15, 12:0020.1N 117.0E55 kt980 mbTropical storm
Jun 15, 18:0021.1N 117.3E50 kt980 mbTropical storm
Jun 16, 00:0022.2N 117.7E45 kt980 mbTropical storm
Jun 16, 06:0023.2N 118.1E45 kt985 mbTropical storm
Jun 16, 12:0024.3N 118.7E40 kt990 mbTropical storm
Jun 16, 18:0025.3N 119.5E35 kt994 mbTropical storm
Jun 17, 00:0026.4N 120.6E30 kt1000 mbTropical depression
Jun 17, 06:0027.4N 121.8E25 kt1000 mbTropical depression
Jun 17, 12:0028.3N 123.2E20 kt1000 mbTropical depression
Jun 17, 18:0028.9N 125.4E1000 mbExtratropical
Jun 18, 00:0029.1N 128.2E1000 mbExtratropical
Jun 18, 06:0029.5N 131.3E998 mbExtratropical
Jun 18, 12:0030.1N 134.8E998 mbExtratropical
Jun 18, 18:0031.0N 138.2E998 mbExtratropical
Jun 19, 00:0032.3N 141.4E998 mbExtratropical
Jun 19, 06:0033.6N 144.7E998 mbExtratropical
Jun 19, 12:0035.2N 148.7E1000 mbExtratropical
Jun 19, 18:0037.0N 153.0E1002 mbExtratropical
Jun 20, 00:0039.0N 158.0E1004 mbExtratropical
Jun 20, 06:0039.7N 162.1E1004 mbExtratropical
Jun 20, 12:0040.0N 166.0E1004 mbExtratropical
Jun 20, 18:0040.2N 170.2E1004 mbExtratropical
Jun 21, 00:0040.3N 174.8E1004 mbExtratropical
Jun 21, 06:0041.0N 179.0E1004 mbExtratropical
Jun 21, 12:0042.0N 183.0EExtratropical

Other Western Pacific storms of 1977

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.