Cyclone Herman (2023)

Cyclone Herman reached Category 4 in the South Indian between March 27, 2023 and April 4, 2023, with a lowest pressure of 930 mb.

Track and intensity

The whole track of Cyclone Herman, colored by strength, with the other storms of the 2023 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 27, 2023 to April 4, 2023
Peak strength: Category 4, 130 kt (150 mph)
Lowest pressure: 930 mb (27.46 inHg)
Landfall: No; closest approach 754 km (469 mi)
Accumulated cyclone energy: 13.1
Identifier: SH172023

Deaths and damage

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

Track

Time (UTC)	Position	Wind	Pressure	Status
Mar 27, 12:00	10.4S 96.0E	20 kt	1007 mb	Disturbance
Mar 27, 18:00	11.0S 96.8E	20 kt	1007 mb	Disturbance
Mar 28, 00:00	11.5S 97.5E	25 kt	998 mb	Tropical depression
Mar 28, 06:00	11.9S 97.9E	25 kt	1006 mb	Tropical depression
Mar 28, 12:00	12.3S 98.2E	25 kt	998 mb	Tropical depression
Mar 28, 18:00	12.7S 99.1E	30 kt	1004 mb	Tropical depression
Mar 29, 00:00	13.0S 99.9E	40 kt	998 mb	Tropical storm
Mar 29, 06:00	13.8S 101.6E	40 kt	1001 mb	Tropical storm
Mar 29, 12:00	14.1S 102.3E	45 kt	994 mb	Tropical storm
Mar 29, 18:00	14.3S 103.1E	55 kt	992 mb	Tropical storm
Mar 30, 00:00	14.8S 103.9E	50 kt	994 mb	Tropical storm
Mar 30, 06:00	15.3S 104.7E	70 kt	981 mb	Typhoon
Mar 30, 12:00	15.8S 105.3E	90 kt	968 mb	Typhoon
Mar 30, 18:00	16.3S 105.8E	110 kt	952 mb	Typhoon
Mar 31, 00:00	16.7S 106.2E	115 kt	947 mb	Typhoon
Mar 31, 06:00	17.3S 106.5E	125 kt	935 mb	Typhoon
Mar 31, 12:00	17.8S 106.7E	130 kt	930 mb	Super typhoon
Mar 31, 18:00	18.2S 106.9E	120 kt	941 mb	Typhoon
Apr 1, 00:00	18.8S 106.9E	115 kt	945 mb	Typhoon
Apr 1, 06:00	19.0S 107.1E	95 kt	961 mb	Typhoon
Apr 1, 12:00	19.4S 107.2E	80 kt	972 mb	Typhoon
Apr 1, 18:00	19.6S 106.7E	60 kt	986 mb	Tropical storm
Apr 2, 00:00	19.7S 106.3E	40 kt	998 mb	Tropical storm
Apr 2, 06:00	19.8S 105.7E	35 kt	999 mb	Tropical storm
Apr 2, 12:00	19.8S 105.3E	30 kt	1002 mb	Tropical depression
Apr 2, 18:00	19.9S 104.8E	25 kt	1003 mb	Tropical depression
Apr 3, 00:00	20.0S 104.4E	20 kt	1004 mb	Disturbance
Apr 3, 06:00	19.8S 104.0E	25 kt	1002 mb	Tropical depression
Apr 3, 12:00	19.5S 103.8E	20 kt	1004 mb	Disturbance
Apr 3, 18:00	19.5S 103.2E	25 kt	1006 mb	Tropical storm
Apr 4, 00:00	19.5S 102.6E	20 kt	1007 mb	Tropical storm

Other South Indian storms of 2023

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.