The 1970 season

Typhoon Nancy (1970)

Typhoon Nancy reached Category 4 in the Western Pacific between February 19, 1970 and February 28, 1970, with a lowest pressure of 950 mb, and made landfall.

Track and intensity

The whole track of Typhoon Nancy, 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.

Open the live map with storms, cones and warnings

The storm

Basin
Western Pacific
Dates
February 19, 1970 to February 28, 1970
Peak strength
Category 4, 120 kt (138 mph)
Lowest pressure
950 mb (28.05 inHg)
Landfall
Yes
Accumulated cyclone energy
21.2
Identifier
WP011970

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
Feb 19, 00:007.0N 151.4E1006 mbMixed
Feb 19, 06:007.5N 151.0E1002 mbMixed
Feb 19, 12:008.0N 150.5E998 mbTropical storm
Feb 19, 18:008.4N 149.8E992 mbTropical storm
Feb 20, 00:008.6N 149.1E40 kt985 mbTropical storm
Feb 20, 06:008.7N 148.2E45 kt990 mbTropical storm
Feb 20, 12:008.4N 147.2E45 kt990 mbTropical storm
Feb 20, 18:008.4N 147.6E50 kt990 mbTropical storm
Feb 21, 00:008.6N 146.7E50 kt990 mbTropical storm
Feb 21, 06:008.6N 145.7E50 kt985 mbTropical storm
Feb 21, 12:008.5N 144.8E50 kt985 mbTropical storm
Feb 21, 18:008.3N 143.8E55 kt980 mbTropical storm
Feb 22, 00:008.1N 142.7E60 kt980 mbTropical storm
Feb 22, 06:008.2N 141.5E65 kt975 mbTropical storm
Feb 22, 12:008.4N 140.1E80 kt970 mbTropical storm
Feb 22, 18:008.8N 138.7E95 kt965 mbTropical storm
Feb 23, 00:009.2N 137.2E100 kt960 mbTropical storm
Feb 23, 06:009.2N 135.7E105 kt960 mbTropical storm
Feb 23, 12:009.4N 134.2E110 kt960 mbTropical storm
Feb 23, 18:0010.1N 132.8E115 kt955 mbTropical storm
Feb 24, 00:0010.2N 131.2E120 kt955 mbTropical storm
Feb 24, 06:0010.6N 129.6E115 kt950 mbTropical storm
Feb 24, 12:0011.3N 128.2E115 kt950 mbTropical storm
Feb 24, 18:0011.9N 126.8E110 kt955 mbTropical storm
Feb 25, 00:0012.8N 125.8E100 kt960 mbTropical storm
Feb 25, 06:0013.6N 124.7E105 kt955 mbTropical storm
Feb 25, 12:0014.5N 124.1E105 kt950 mbTropical storm
Feb 25, 18:0015.4N 123.8E95 kt950 mbTropical storm
Feb 26, 00:0016.2N 123.7E90 kt955 mbTropical storm
Feb 26, 06:0017.2N 123.8E85 kt965 mbTropical storm
Feb 26, 12:0018.3N 124.2E75 kt975 mbTropical storm
Feb 26, 18:0019.4N 124.8E65 kt985 mbTropical storm
Feb 27, 00:0020.4N 125.2E55 kt985 mbTropical storm
Feb 27, 06:0021.1N 125.8E40 kt994 mbTropical storm
Feb 27, 12:0021.4N 126.8E25 kt1002 mbTropical storm
Feb 27, 18:0022.6N 129.0E1006 mbTropical storm
Feb 28, 00:0023.0N 131.2E1006 mbMixed

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.