The 1977 season

Tropical Storm Wanda (1977)

Tropical Storm Wanda peaked at 45 kt in the Western Pacific between July 29, 1977 and August 10, 1977, with a lowest pressure of 985 mb, and made landfall.

Track and intensity

The whole track of Tropical Storm Wanda, 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
July 29, 1977 to August 10, 1977
Peak strength
Tropical Storm, 45 kt (52 mph)
Lowest pressure
985 mb (29.09 inHg)
Landfall
Yes
Accumulated cyclone energy
3.2
Identifier
WP081977

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
Jul 29, 12:0020.0N 138.0ETropical storm
Jul 29, 18:0020.5N 137.7ETropical storm
Jul 30, 00:0020.9N 138.3E1004 mbTropical storm
Jul 30, 06:0021.5N 139.2E1004 mbTropical storm
Jul 30, 12:0022.0N 139.6E1002 mbTropical storm
Jul 30, 18:0022.6N 140.0E1002 mbTropical storm
Jul 31, 00:0023.1N 140.4E1000 mbTropical storm
Jul 31, 06:0023.5N 140.9E30 kt1000 mbTropical depression
Jul 31, 12:0024.0N 140.9E30 kt1000 mbTropical depression
Jul 31, 18:0024.5N 140.7E35 kt1000 mbTropical storm
Aug 1, 00:0025.1N 140.6E40 kt994 mbTropical storm
Aug 1, 06:0025.8N 140.6E45 kt992 mbTropical storm
Aug 1, 12:0026.5N 140.7E45 kt992 mbTropical storm
Aug 1, 18:0027.1N 140.5E45 kt992 mbTropical storm
Aug 2, 00:0027.7N 140.4E40 kt992 mbTropical storm
Aug 2, 06:0028.1N 141.4E35 kt990 mbTropical storm
Aug 2, 12:0028.4N 142.6E30 kt990 mbTropical depression
Aug 2, 18:0029.2N 143.0E35 kt990 mbTropical storm
Aug 3, 00:0030.0N 143.5E45 kt985 mbTropical storm
Aug 3, 06:0030.3N 144.3E45 kt990 mbTropical storm
Aug 3, 12:0030.5N 145.0E40 kt990 mbTropical storm
Aug 3, 18:0030.8N 145.7E35 kt990 mbTropical storm
Aug 4, 00:0031.2N 146.3E30 kt990 mbTropical depression
Aug 4, 06:0031.5N 146.8E30 kt990 mbTropical depression
Aug 4, 12:0031.5N 147.8E40 kt992 mbTropical storm
Aug 4, 18:0031.6N 148.4E35 kt992 mbTropical storm
Aug 5, 00:0031.8N 148.9E35 kt992 mbTropical storm
Aug 5, 06:0032.3N 149.9E35 kt992 mbTropical storm
Aug 5, 12:0032.9N 150.8E35 kt994 mbTropical storm
Aug 5, 18:0033.6N 151.7E35 kt996 mbTropical storm
Aug 6, 00:0034.4N 152.5E35 kt996 mbTropical storm
Aug 6, 06:0034.9N 153.5E35 kt996 mbTropical storm
Aug 6, 12:0035.4N 154.6E35 kt996 mbTropical storm
Aug 6, 18:0037.2N 155.4E35 kt996 mbTropical storm
Aug 7, 00:0040.0N 155.0E996 mbTropical storm
Aug 7, 06:0044.0N 155.0E998 mbTropical storm
Aug 7, 12:0047.0N 154.3E996 mbExtratropical
Aug 7, 18:0049.5N 155.3E996 mbExtratropical
Aug 8, 00:0053.0N 155.2E996 mbExtratropical
Aug 8, 06:0055.0N 156.2E998 mbExtratropical
Aug 8, 12:0057.0N 159.0E1000 mbExtratropical
Aug 8, 18:0058.0N 162.9E1000 mbExtratropical
Aug 9, 00:0058.7N 166.0E1000 mbExtratropical
Aug 9, 06:0059.0N 169.0E998 mbExtratropical
Aug 9, 12:0059.5N 171.5E1000 mbExtratropical
Aug 9, 18:0059.8N 173.2E1002 mbExtratropical
Aug 10, 00:0060.0N 175.0E1002 mbExtratropical
Aug 10, 06:0060.0N 176.0E1002 mbExtratropical
Aug 10, 12:0060.0N 177.2E1004 mbExtratropical

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.