The 1971 season

Tropical Storm Emma (1971)

Tropical Storm Emma peaked at 35 kt in the Western Pacific between May 27, 1971 and June 3, 1971, with a lowest pressure of 1000 mb, and made landfall.

Track and intensity

The whole track of Tropical Storm Emma, colored by strength, with the other storms of the 1971 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
May 27, 1971 to June 3, 1971
Peak strength
Tropical Storm, 35 kt (40 mph)
Lowest pressure
1000 mb (29.53 inHg)
Landfall
Yes
Accumulated cyclone energy
0.1
Identifier
WP091971

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
May 27, 06:008.5N 138.8E1006 mbTropical storm
May 27, 12:008.0N 137.6E1006 mbTropical storm
May 27, 18:007.4N 136.3E1006 mbTropical storm
May 28, 00:006.7N 134.7E1004 mbMixed
May 28, 06:006.1N 133.2E1002 mbTropical storm
May 28, 12:006.1N 132.4E35 kt1000 mbTropical storm
May 28, 18:005.8N 130.9E30 kt1000 mbTropical storm
May 29, 00:005.9N 129.5E25 kt1000 mbTropical storm
May 29, 06:006.3N 128.0E25 kt1000 mbTropical storm
May 29, 12:007.0N 126.7E25 kt1004 mbTropical storm
May 29, 18:007.6N 127.9E1004 mbTropical storm
May 30, 00:008.3N 127.3E1004 mbTropical storm
May 30, 06:008.8N 126.5E1004 mbMixed
May 30, 12:009.1N 125.6E1006 mbMixed
May 30, 18:009.3N 124.9E1006 mbMixed
May 31, 00:009.4N 123.8E1006 mbMixed
May 31, 06:009.6N 122.8E1006 mbMixed
May 31, 12:0010.0N 122.0E1006 mbMixed
May 31, 18:0011.0N 121.0E1006 mbMixed
Jun 1, 00:0011.9N 120.0E1006 mbMixed
Jun 1, 06:0013.0N 119.2E1006 mbMixed
Jun 1, 12:0013.9N 118.5E1006 mbMixed
Jun 1, 18:0014.9N 118.0E1006 mbMixed
Jun 2, 00:0015.7N 117.5E1006 mbMixed
Jun 2, 06:0016.6N 117.0E1006 mbMixed
Jun 2, 12:0017.4N 116.6E1006 mbTropical storm
Jun 2, 18:0018.2N 116.3E1006 mbTropical storm
Jun 3, 00:0018.8N 116.2E1006 mbTropical storm

Other Western Pacific storms of 1971

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.