The 1986 season

Tropical Storm Iarima (1986)

Tropical Storm Iarima peaked at 36 kt in the South Indian between March 11, 1986 and March 18, 1986, with a lowest pressure of 991 mb.

Track and intensity

The whole track of Tropical Storm Iarima, colored by strength, with the other storms of the 1986 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 11, 1986 to March 18, 1986
Peak strength
Tropical Storm, 36 kt (41 mph)
Lowest pressure
991 mb (29.26 inHg)
Landfall
No; closest approach 1989 km (1236 mi)
Accumulated cyclone energy
0.6
Identifier
SH261986

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 11, 00:0012.9S 82.0ETropical storm
Mar 11, 06:0013.3S 81.3ETropical storm
Mar 11, 12:0013.7S 80.6ETropical storm
Mar 11, 18:0014.0S 80.0ETropical storm
Mar 12, 00:0014.2S 79.6ETropical storm
Mar 12, 06:0014.3S 79.4ETropical storm
Mar 12, 12:0014.5S 78.9ETropical storm
Mar 12, 18:0014.9S 77.3ETropical storm
Mar 13, 00:0015.3S 76.0ETropical storm
Mar 13, 06:0015.4S 78.1E25 kt991 mbTropical storm
Mar 13, 12:0016.1S 77.6E30 kt991 mbTropical storm
Mar 13, 18:0016.6S 77.2E30 kt991 mbTropical storm
Mar 14, 00:0017.0S 76.9E30 kt991 mbTropical storm
Mar 14, 06:0017.5S 76.6E30 kt991 mbTropical storm
Mar 14, 12:0017.9S 76.4E35 kt997 mbTropical storm
Mar 14, 18:0018.4S 76.4E35 kt997 mbTropical storm
Mar 15, 00:0018.7S 76.7E35 kt997 mbTropical storm
Mar 15, 06:0018.8S 77.1E30 kt997 mbTropical storm
Mar 15, 12:0018.9S 77.6E25 kt997 mbTropical storm
Mar 15, 18:0018.9S 78.2E20 kt997 mbTropical storm
Mar 16, 00:0019.7S 78.3E28 kt997 mbTropical storm
Mar 16, 06:0020.1S 79.0E36 ktMixed
Mar 16, 12:0020.6S 79.6E36 ktMixed
Mar 16, 18:0021.1S 80.3EMixed
Mar 17, 00:0021.8S 81.1EMixed
Mar 17, 06:0022.7S 82.4EMixed
Mar 17, 12:0023.7S 84.0EMixed
Mar 17, 18:0025.0S 86.0EMixed
Mar 18, 00:0026.1S 88.1EMixed

Other South Indian storms of 1986

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.