The 2017 season

Cyclone Ockhi (2017)

Cyclone Ockhi reached Category 3 in the North Indian between November 28, 2017 and December 5, 2017, with a lowest pressure of 948 mb, and made landfall.

Track and intensity

The whole track of Cyclone Ockhi, colored by strength, with the other storms of the 2017 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
North Indian
Dates
November 28, 2017 to December 5, 2017
Peak strength
Category 3, 100 kt (115 mph)
Lowest pressure
948 mb (27.99 inHg)
Landfall
Yes
Accumulated cyclone energy
11.7
Tropical-storm-force wind reached
155 nmi (287 km, 178 mi) from the center at its widest
Hurricane-force wind reached
40 nmi (74 km, 46 mi) from the center at its widest
Eyewall radius at its peak
15 nmi (28 km, 17 mi)
Overall size
215 nmi (398 km, 247 mi) to the outermost closed isobar
Peak gust in the best track
75 kt (86 mph)
Fastest the center moved
16 kt (18 mph)
Identifier
IO032017

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)PositionWindPressureStatus
Nov 28, 18:006.0N 82.2E30 kt1000 mbTropical depression
Nov 29, 00:005.9N 81.7E30 kt1000 mbTropical depression
Nov 29, 06:005.9N 80.8E30 kt1000 mbTropical depression
Nov 29, 12:006.2N 79.7E35 kt996 mbTropical storm
Nov 29, 18:006.7N 78.8E40 kt993 mbTropical storm
Nov 30, 00:007.2N 77.9E45 kt989 mbTropical storm
Nov 30, 06:007.8N 76.6E50 kt985 mbTropical storm
Nov 30, 12:008.1N 75.8E55 kt995 mbTropical storm
Nov 30, 18:008.5N 74.9E60 kt990 mbTropical storm
Dec 1, 00:008.7N 74.2E65 kt974 mbTyphoon
Dec 1, 06:008.8N 73.3E70 kt970 mbTyphoon
Dec 1, 12:008.8N 72.8E75 kt967 mbTyphoon
Dec 1, 18:008.9N 72.1E80 kt975 mbTyphoon
Dec 2, 00:009.3N 71.5E85 kt970 mbTyphoon
Dec 2, 06:009.8N 71.0E90 kt956 mbTyphoon
Dec 2, 12:0010.4N 70.3E100 kt948 mbTyphoon
Dec 2, 18:0010.9N 69.7E95 kt952 mbTyphoon
Dec 3, 00:0011.3N 69.3E90 kt956 mbTyphoon
Dec 3, 06:0012.1N 68.9E80 kt975 mbTyphoon
Dec 3, 12:0012.8N 68.7E75 kt977 mbTyphoon
Dec 3, 18:0013.5N 68.5E75 kt979 mbTyphoon
Dec 4, 00:0014.1N 68.5E75 kt967 mbTyphoon
Dec 4, 06:0014.7N 68.7E70 kt983 mbTyphoon
Dec 4, 12:0015.5N 69.2E65 kt984 mbTyphoon
Dec 4, 18:0016.6N 70.0E60 kt978 mbTropical storm
Dec 5, 00:0017.7N 70.9E50 kt985 mbTropical storm
Dec 5, 06:0018.3N 71.5E35 kt996 mbTropical storm
Dec 5, 12:0018.5N 71.8E30 kt1000 mbExtratropical
Dec 5, 18:0019.2N 71.9E20 kt1004 mbTropical storm

Other North Indian storms of 2017

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.