The 2021 season

Unnamed tropical storm (2021)

Unnamed tropical storm peaked at 45 kt in the South Indian between December 4, 2020 and December 12, 2020, with a lowest pressure of 992 mb, and made landfall.

Radar

Reflectivity now over Unnamed tropical storm. Open it to see storms, cones and warnings on the map.

Open the live radar with storms, cones and warnings

Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.

The storm

Basin
South Indian
Dates
December 4, 2020 to December 12, 2020
Peak strength
Tropical Storm, 45 kt (52 mph)
Lowest pressure
992 mb (29.29 inHg)
Landfall
Yes
Accumulated cyclone energy
1.9
Identifier
SH032021

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Dec 4, 06:008.5S 105.7E20 kt1002 mbDisturbance
Dec 4, 12:008.5S 105.8E20 kt1002 mbNot reported
Dec 4, 18:008.6S 105.9ENot reported
Dec 5, 00:008.7S 106.0ENot reported
Dec 5, 06:008.7S 106.1ENot reported
Dec 5, 12:009.1S 106.2E25 kt1004 mbTropical depression
Dec 5, 18:009.0S 106.1E25 kt1004 mbTropical depression
Dec 6, 00:008.9S 106.2E30 kt1000 mbTropical depression
Dec 6, 06:009.0S 107.1E30 kt1001 mbTropical depression
Dec 6, 12:009.5S 107.7E25 kt1003 mbTropical depression
Dec 6, 18:0010.0S 108.0E30 kt1004 mbTropical depression
Dec 7, 00:0010.3S 108.2E30 kt1002 mbTropical depression
Dec 7, 06:0010.6S 108.2E30 kt1001 mbTropical depression
Dec 7, 12:0010.9S 108.1E30 kt1001 mbTropical depression
Dec 7, 18:0011.0S 107.7E30 kt1000 mbTropical depression
Dec 8, 00:0011.2S 107.5E30 kt1001 mbTropical depression
Dec 8, 06:0011.3S 107.6E35 kt998 mbTropical storm
Dec 8, 12:0011.1S 108.0E40 kt994 mbTropical storm
Dec 8, 18:0010.9S 108.6E45 kt992 mbTropical storm
Dec 9, 00:0011.1S 109.0E45 kt994 mbTropical storm
Dec 9, 06:0011.6S 109.9E40 kt995 mbTropical storm
Dec 9, 12:0012.4S 110.6E35 kt998 mbTropical storm
Dec 9, 18:0013.3S 110.9E35 kt998 mbTropical storm
Dec 10, 00:0014.0S 111.4E35 kt1000 mbTropical storm
Dec 10, 06:0014.8S 112.3E35 kt1001 mbTropical storm
Dec 10, 12:0015.9S 113.6E35 kt1001 mbTropical storm
Dec 10, 18:0018.0S 115.8E45 kt997 mbTropical storm
Dec 11, 00:0019.6S 117.3E40 kt999 mbTropical storm
Dec 11, 06:0021.2S 119.1E35 kt999 mbTropical storm
Dec 11, 12:0022.8S 121.1E25 kt1002 mbTropical depression
Dec 11, 18:0024.3S 123.0E25 kt1001 mbTropical depression
Dec 12, 00:0025.9S 124.6E20 kt1001 mbDisturbance

Other South Indian storms of 2021

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.