The 1971 season

Tropical Storm Mavis (1971)

Tropical Storm Mavis peaked at 50 kt in the South Indian between March 23, 1971 and March 29, 1971, with a lowest pressure of 975 mb, and made landfall.

Track and intensity

The whole track of Tropical Storm Mavis, 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 Indian
Dates
March 23, 1971 to March 29, 1971
Peak strength
Tropical Storm, 50 kt (58 mph)
Lowest pressure
975 mb (28.79 inHg)
Landfall
Yes
Accumulated cyclone energy
1.6
Identifier
SH261971

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 23, 00:0017.0S 121.0E25 kt1003 mbTropical storm
Mar 23, 06:0017.0S 120.0E20 kt1001 mbTropical storm
Mar 23, 12:0017.0S 119.0E20 kt999 mbTropical storm
Mar 23, 18:0017.0S 118.0E20 kt998 mbTropical storm
Mar 24, 00:0017.0S 117.0E20 kt997 mbTropical storm
Mar 24, 06:0017.1S 116.0E20 kt997 mbTropical storm
Mar 24, 12:0017.4S 115.2E20 kt997 mbTropical storm
Mar 24, 18:0017.7S 114.6E25 kt996 mbTropical storm
Mar 25, 00:0018.0S 114.0E35 kt996 mbTropical storm
Mar 25, 06:0018.6S 113.3E35 kt994 mbTropical storm
Mar 25, 12:0019.2S 112.5E40 kt992 mbTropical storm
Mar 25, 18:0019.6S 110.9E40 kt985 mbTropical storm
Mar 26, 00:0020.0S 109.0E45 kt975 mbTropical storm
Mar 26, 06:0020.5S 107.7E35 kt975 mbTropical storm
Mar 26, 12:0021.1S 106.6E25 kt975 mbTropical storm
Mar 26, 18:0021.6S 105.6E25 kt975 mbTropical storm
Mar 27, 00:0022.3S 106.0E20 kt976 mbTropical storm
Mar 27, 06:0023.4S 107.9E25 kt978 mbTropical storm
Mar 27, 12:0024.5S 110.0E25 kt981 mbTropical storm
Mar 27, 18:0025.6S 111.9E30 kt986 mbTropical storm
Mar 28, 00:0026.7S 114.3E30 kt990 mbTropical storm
Mar 28, 06:0028.3S 117.9E35 kt992 mbTropical storm
Mar 28, 12:0030.0S 122.0E40 kt998 mbTropical storm
Mar 28, 18:0031.2S 126.0E45 kt1004 mbTropical storm
Mar 29, 00:0032.0S 130.0E50 kt1007 mbMixed

Other South Indian 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.