Tropical Storm Bobalahy (1985)

Tropical Storm Bobalahy peaked at 55 kt in the South Indian between December 2, 1984 and December 12, 1984, with a lowest pressure of 984 mb.

Track and intensity

The whole track of Tropical Storm Bobalahy, colored by strength, with the other storms of the 1985 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: December 2, 1984 to December 12, 1984
Peak strength: Tropical Storm, 55 kt (63 mph)
Lowest pressure: 984 mb (29.06 inHg)
Landfall: No; closest approach 528 km (328 mi)
Accumulated cyclone energy: 4.4
Identifier: SH021985

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)	Position	Wind	Pressure	Status
Dec 2, 06:00	10.7S 82.1E	25 kt		XX
Dec 2, 12:00	11.3S 81.6E	25 kt		XX
Dec 2, 18:00	11.9S 81.0E	30 kt		XX
Dec 3, 00:00	12.5S 80.3E	35 kt		XX
Dec 3, 06:00	13.1S 79.4E	40 kt		XX
Dec 3, 12:00	13.7S 78.3E	40 kt	1000 mb	XX
Dec 3, 18:00	14.3S 77.2E	45 kt	997 mb	XX
Dec 4, 00:00	14.6S 76.2E	45 kt	991 mb	XX
Dec 4, 06:00	14.8S 75.2E	50 kt	991 mb	XX
Dec 4, 12:00	15.2S 74.3E	55 kt	991 mb	XX
Dec 4, 18:00	15.6S 73.5E	55 kt	991 mb	XX
Dec 5, 00:00	16.1S 72.9E	55 kt	984 mb	XX
Dec 5, 06:00	16.6S 72.3E	55 kt	984 mb	XX
Dec 5, 12:00	17.0S 71.7E	55 kt	984 mb	XX
Dec 5, 18:00	17.4S 71.1E	55 kt	991 mb	XX
Dec 6, 00:00	17.8S 70.6E	50 kt	991 mb	XX
Dec 6, 06:00	18.2S 70.1E	45 kt	991 mb	XX
Dec 6, 12:00	18.6S 69.6E	45 kt	997 mb	XX
Dec 6, 18:00	18.9S 69.0E	40 kt	1000 mb	XX
Dec 7, 00:00	19.3S 68.3E	35 kt	1000 mb	XX
Dec 7, 06:00	19.7S 67.5E	30 kt	1000 mb	XX
Dec 7, 12:00	20.0S 66.6E	30 kt	1000 mb	XX
Dec 7, 18:00	20.2S 65.8E	25 kt	997 mb	XX
Dec 8, 00:00	20.4S 65.0E	25 kt	991 mb	XX
Dec 8, 06:00	20.6S 64.2E	20 kt	997 mb	XX
Dec 8, 12:00	22.3S 62.7E	28 kt	997 mb	XX
Dec 8, 18:00	22.8S 62.2E	24 kt	1000 mb	Tropical storm
Dec 9, 00:00	23.6S 61.7E	24 kt	1000 mb	Mixed
Dec 9, 06:00	24.4S 61.1E	24 kt	1000 mb	Mixed
Dec 9, 12:00	25.3S 60.4E	24 kt	1000 mb	Mixed
Dec 9, 18:00	26.1S 59.8E	20 kt	1003 mb	Mixed
Dec 10, 00:00	26.9S 59.2E	20 kt	1003 mb	Mixed
Dec 10, 06:00	27.8S 58.8E	20 kt	1003 mb	Mixed
Dec 10, 12:00	28.9S 58.8E	36 kt		Mixed
Dec 10, 18:00	29.8S 59.3E	36 kt		Mixed
Dec 11, 00:00	30.6S 59.9E	36 kt		Mixed
Dec 11, 06:00	31.1S 60.6E	36 kt		Mixed
Dec 11, 12:00	31.6S 61.8E			Tropical storm
Dec 11, 18:00	32.3S 64.1E			Tropical storm
Dec 12, 00:00	32.8S 66.4E			Tropical storm
Dec 12, 06:00	33.1S 68.0E			Tropical storm
Dec 12, 12:00	33.3S 69.2E			Tropical storm

Other South Indian storms of 1985

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.