The 1971 season

Tropical Storm Lena (1971)

Tropical Storm Lena peaked at 55 kt in the South Pacific between March 13, 1971 and March 23, 1971, with a lowest pressure of 980 mb.

Track and intensity

The whole track of Tropical Storm Lena, 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
South Pacific
Dates
March 13, 1971 to March 23, 1971
Peak strength
Tropical Storm, 55 kt (63 mph)
Lowest pressure
980 mb (28.94 inHg)
Landfall
No; closest approach 123 km (76 mi)
Accumulated cyclone energy
4.0
Identifier
SH241971

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
Mar 13, 00:0012.5S 154.8E45 ktTropical storm
Mar 13, 06:0013.0S 155.3E35 ktTropical storm
Mar 13, 12:0013.8S 155.9E35 ktTropical storm
Mar 13, 18:0014.8S 156.4E35 ktTropical storm
Mar 14, 00:0016.0S 156.9E35 ktTropical storm
Mar 14, 06:0017.2S 157.0E35 ktTropical storm
Mar 14, 12:0018.4S 156.6E30 ktTropical storm
Mar 14, 18:0019.4S 156.0E40 ktTropical storm
Mar 15, 00:0020.2S 155.4E50 ktTropical storm
Mar 15, 06:0021.1S 154.8E45 ktTropical storm
Mar 15, 12:0021.8S 154.3E45 ktTropical storm
Mar 15, 18:0022.4S 154.1E50 kt981 mbTropical storm
Mar 16, 00:0023.0S 154.2E55 ktTropical storm
Mar 16, 06:0023.6S 154.7E50 ktTropical storm
Mar 16, 12:0024.0S 155.0E45 ktTropical storm
Mar 16, 18:0023.9S 155.2E45 ktTropical storm
Mar 17, 00:0023.5S 155.5E45 ktTropical storm
Mar 17, 06:0023.2S 155.8E40 ktTropical storm
Mar 17, 12:0022.8S 156.4E35 ktTropical storm
Mar 17, 18:0022.5S 157.2E30 ktTropical storm
Mar 18, 00:0022.1S 158.1E30 ktTropical storm
Mar 18, 06:0021.8S 159.1E30 ktTropical storm
Mar 18, 12:0021.4S 160.1E30 ktTropical storm
Mar 18, 18:0021.4S 160.9E25 ktTropical storm
Mar 19, 00:0021.5S 161.7E25 kt990 mbTropical storm
Mar 19, 06:0021.8S 162.7E20 ktTropical storm
Mar 19, 12:0022.2S 163.8E20 kt990 mbTropical storm
Mar 19, 18:0023.0S 165.7E15 ktTropical storm
Mar 20, 00:0023.5S 164.9E40 kt990 mbNot reported
Mar 20, 06:0024.3S 166.6ENot reported
Mar 20, 12:0025.2S 168.7E30 kt997 mbNot reported
Mar 20, 18:0026.3S 170.2ENot reported
Mar 21, 00:0027.5S 171.8E30 kt997 mbNot reported
Mar 21, 06:0028.8S 173.6ENot reported
Mar 21, 12:0030.4S 175.7E30 kt997 mbNot reported
Mar 21, 18:0032.6S 177.8ENot reported
Mar 22, 00:0034.8S 180.3E30 kt997 mbNot reported
Mar 22, 06:0036.4S 183.2ENot reported
Mar 22, 12:0037.3S 186.3E40 kt990 mbNot reported
Mar 22, 18:0037.4S 189.2ENot reported
Mar 23, 00:0037.5S 192.3E40 kt990 mbNot reported
Mar 23, 06:0038.1S 196.2ENot reported
Mar 23, 12:0039.1S 200.7E40 kt990 mbNot reported

Other South 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.