The 1970 season

Unnamed tropical depression (1970)

Unnamed tropical depression was tracked in the Western Pacific between July 15, 1970 and July 24, 1970.

Track and intensity

The whole track of Unnamed tropical depression, 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
July 15, 1970 to July 24, 1970
Peak strength
Tropical Depression
Landfall
No; closest approach 1500 km (932 mi)
Accumulated cyclone energy
0.0
Identifier
1970196N19154

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 15, 06:0019.0N 154.0EDisturbance
Jul 15, 12:0018.5N 155.0EDisturbance
Jul 15, 18:0018.5N 156.0EDisturbance
Jul 16, 00:0019.0N 157.0EDisturbance
Jul 16, 06:0020.0N 157.6EDisturbance
Jul 16, 12:0021.0N 158.0EDisturbance
Jul 16, 18:0022.0N 158.0EDisturbance
Jul 17, 00:0023.0N 157.5ETropical storm
Jul 17, 06:0023.5N 156.6ETropical storm
Jul 17, 12:0024.1N 156.1ETropical storm
Jul 17, 18:0025.0N 156.0ETropical storm
Jul 18, 00:0025.5N 155.5ETropical storm
Jul 18, 06:0026.0N 155.0EDisturbance
Jul 18, 12:0026.5N 154.5EDisturbance
Jul 18, 18:0026.8N 154.2EDisturbance
Jul 19, 00:0027.0N 154.0EDisturbance
Jul 19, 06:0027.1N 153.8EDisturbance
Jul 19, 12:0027.2N 153.5EDisturbance
Jul 19, 18:0027.1N 153.2EDisturbance
Jul 20, 00:0027.0N 153.0EDisturbance
Jul 20, 06:0026.5N 152.7EDisturbance
Jul 20, 12:0026.0N 152.5EDisturbance
Jul 20, 18:0025.7N 153.0EDisturbance
Jul 21, 00:0025.9N 153.5EDisturbance
Jul 21, 06:0026.2N 154.0EDisturbance
Jul 21, 12:0026.8N 155.0EDisturbance
Jul 21, 18:0027.4N 156.0EDisturbance
Jul 22, 00:0028.0N 157.0EDisturbance
Jul 22, 06:0028.3N 158.1EDisturbance
Jul 22, 12:0028.5N 159.0EDisturbance
Jul 22, 18:0029.0N 159.6EDisturbance
Jul 23, 00:0029.7N 159.5EDisturbance
Jul 23, 06:0030.5N 158.9EDisturbance
Jul 23, 12:0030.8N 158.1EDisturbance
Jul 23, 18:0031.5N 158.4EDisturbance
Jul 24, 00:0032.0N 159.0EDisturbance
Jul 24, 06:0033.7N 160.9EDisturbance
Jul 24, 12:0035.5N 162.5EDisturbance

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.