Tropical Storm Dahlia (2018)

Tropical Storm Dahlia peaked at 55 kt in the South Indian between November 27, 2017 and December 7, 2017, with a lowest pressure of 988 mb.

Track and intensity

The whole track of Tropical Storm Dahlia, colored by strength, with the other storms of the 2018 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: November 27, 2017 to December 7, 2017
Peak strength: Tropical Storm, 55 kt (63 mph)
Lowest pressure: 988 mb (29.18 inHg)
Landfall: No; closest approach 173 km (107 mi)
Accumulated cyclone energy: 3.0
Identifier: SH012018

Deaths and damage

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

Track

Time (UTC)	Position	Wind	Pressure	Status
Nov 27, 12:00	7.8S 97.5E	20 kt	1002 mb	Tropical storm
Nov 27, 18:00	7.9S 98.1E	20 kt	1002 mb	Tropical storm
Nov 28, 00:00	8.1S 98.6E	20 kt	1002 mb	Tropical storm
Nov 28, 06:00	8.2S 99.0E	20 kt	1000 mb	Tropical storm
Nov 28, 12:00	8.4S 99.6E	20 kt	1007 mb	Disturbance
Nov 28, 18:00	8.2S 100.3E	20 kt	1007 mb	Disturbance
Nov 29, 00:00	8.1S 100.8E	25 kt	1004 mb	Tropical depression
Nov 29, 06:00	8.2S 101.9E	30 kt	1002 mb	Tropical depression
Nov 29, 12:00	8.5S 102.9E	35 kt	1000 mb	Tropical storm
Nov 29, 18:00	8.8S 103.8E	35 kt	1000 mb	Tropical storm
Nov 30, 00:00	9.0S 105.2E	40 kt	997 mb	Tropical storm
Nov 30, 06:00	9.1S 106.4E	40 kt	997 mb	Tropical storm
Nov 30, 12:00	9.3S 107.3E	45 kt	995 mb	Tropical storm
Nov 30, 18:00	9.5S 108.2E	45 kt	993 mb	Tropical storm
Dec 1, 00:00	9.7S 109.2E	55 kt	988 mb	Tropical storm
Dec 1, 06:00	10.0S 109.9E	50 kt	992 mb	Tropical storm
Dec 1, 12:00	10.4S 110.4E	50 kt	992 mb	Tropical storm
Dec 1, 18:00	10.6S 110.6E	50 kt	992 mb	Tropical storm
Dec 2, 00:00	10.8S 110.9E	45 kt	996 mb	Tropical storm
Dec 2, 06:00	10.9S 111.3E	40 kt	999 mb	Tropical storm
Dec 2, 12:00	11.2S 112.0E	40 kt	999 mb	Tropical storm
Dec 2, 18:00	11.8S 112.3E	35 kt	1002 mb	Tropical storm
Dec 3, 00:00	12.5S 112.4E	35 kt	1002 mb	Tropical storm
Dec 3, 06:00	13.8S 112.4E	35 kt	1002 mb	Tropical storm
Dec 3, 12:00	14.9S 112.1E	35 kt	1002 mb	Tropical storm
Dec 3, 18:00	15.7S 111.8E	30 kt	1004 mb	Tropical depression
Dec 4, 00:00	16.3S 111.4E	25 kt	1005 mb	Tropical depression
Dec 4, 06:00	17.1S 111.0E	25 kt	1005 mb	Tropical depression
Dec 4, 12:00	17.5S 110.9E	25 kt	1005 mb	Tropical depression
Dec 4, 18:00	17.8S 110.6E	25 kt	1005 mb	Tropical depression
Dec 5, 00:00	17.6S 110.4E	25 kt	1004 mb	Tropical depression
Dec 5, 06:00	17.3S 110.4E	25 kt	1004 mb	Tropical depression
Dec 5, 12:00	17.0S 110.5E	20 kt	1005 mb	Disturbance
Dec 5, 18:00	16.8S 110.7E	20 kt	1005 mb	Disturbance
Dec 6, 00:00	16.4S 111.0E	20 kt	1006 mb	Disturbance
Dec 6, 06:00	15.9S 111.3E	15 kt	1008 mb	Disturbance
Dec 6, 12:00	15.2S 111.7E	15 kt	1008 mb	Disturbance
Dec 6, 18:00	14.7S 112.3E	15 kt	1010 mb	Disturbance
Dec 7, 00:00	14.2S 113.0E	10 kt	1012 mb	Disturbance

Other South Indian storms of 2018

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.