The 1991 season

Cyclone Marian (1991)

Cyclone Marian reached Category 2 in the South Indian between April 8, 1991 and April 19, 1991, with a lowest pressure of 930 mb.

Track and intensity

The whole track of Cyclone Marian, colored by strength, with the other storms of the 1991 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
April 8, 1991 to April 19, 1991
Peak strength
Category 2, 95 kt (109 mph)
Lowest pressure
930 mb (27.46 inHg)
Landfall
No; closest approach 85 km (53 mi)
Accumulated cyclone energy
12.4
Identifier
SH191991

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
Apr 8, 18:0010.3S 131.7E15 ktTropical storm
Apr 9, 00:009.9S 131.3E15 kt1004 mbTropical storm
Apr 9, 06:009.6S 130.7E15 kt1004 mbTropical storm
Apr 9, 12:009.5S 129.9E20 kt1004 mbTropical storm
Apr 9, 18:009.4S 129.2E25 kt1002 mbTropical storm
Apr 10, 00:009.4S 128.5E25 kt1000 mbTropical storm
Apr 10, 06:009.5S 127.7E25 kt998 mbTropical storm
Apr 10, 12:009.7S 127.0E25 kt996 mbTropical storm
Apr 10, 18:0010.0S 126.2E30 kt991 mbTropical storm
Apr 11, 00:0010.3S 125.5E30 kt985 mbTropical storm
Apr 11, 06:0010.7S 124.8E35 kt978 mbTropical storm
Apr 11, 12:0011.1S 124.2E45 kt970 mbTropical storm
Apr 11, 18:0011.4S 123.6E55 kt962 mbTropical storm
Apr 12, 00:0011.7S 122.9E65 kt955 mbTropical storm
Apr 12, 06:0012.1S 122.1E70 kt950 mbTropical storm
Apr 12, 12:0012.5S 121.2E75 kt945 mbTropical storm
Apr 12, 18:0013.0S 120.6E80 kt935 mbTropical storm
Apr 13, 00:0013.4S 120.3E85 kt930 mbTropical storm
Apr 13, 06:0013.7S 120.1E90 kt935 mbTropical storm
Apr 13, 12:0014.0S 120.1E90 kt935 mbTropical storm
Apr 13, 18:0014.1S 119.8E95 kt940 mbTropical storm
Apr 14, 00:0013.9S 119.5E95 kt940 mbTropical storm
Apr 14, 06:0013.7S 119.7E90 kt945 mbTropical storm
Apr 14, 12:0013.6S 120.0E85 kt945 mbTropical storm
Apr 14, 18:0013.7S 120.3E80 kt950 mbTropical storm
Apr 15, 00:0013.9S 120.5E70 kt955 mbTropical storm
Apr 15, 06:0014.2S 119.5E65 kt962 mbTropical storm
Apr 15, 12:0014.2S 119.5E60 kt970 mbTropical storm
Apr 15, 18:0014.1S 118.6E55 kt980 mbTropical storm
Apr 16, 00:0014.2S 117.8E50 kt990 mbTropical storm
Apr 16, 06:0014.4S 117.0E50 kt995 mbTropical storm
Apr 16, 12:0014.6S 116.2E45 kt995 mbTropical storm
Apr 16, 18:0014.8S 115.4E45 kt995 mbTropical storm
Apr 17, 00:0015.1S 114.8E45 kt995 mbTropical storm
Apr 17, 06:0015.4S 114.2E45 kt995 mbTropical storm
Apr 17, 12:0015.8S 113.6E40 kt997 mbTropical storm
Apr 17, 18:0016.2S 113.1E40 kt998 mbTropical storm
Apr 18, 00:0016.7S 112.6E35 kt998 mbTropical storm
Apr 18, 06:0017.8S 111.8E30 kt998 mbTropical storm
Apr 18, 12:0019.1S 111.1E30 kt998 mbTropical storm
Apr 18, 18:0020.7S 110.1E25 kt1000 mbTropical storm
Apr 19, 00:0022.1S 109.7E25 kt1002 mbTropical storm

Other South Indian storms of 1991

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.