Unnamed tropical storm (2021)

Basin

South Indian

Dates

March 20, 2021 to March 26, 2021

Peak strength

Tropical Storm, 35 kt (40 mph), ten-minute wind

Lowest pressure

1000 mb (29.53 inHg)

Landfall

No; closest approach 1057 km (657 mi)

Accumulated cyclone energy

0.5

Identifier

2021079S12097

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

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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. This storm’s winds are ten-minute averages from its regional agency. They read about 12 percent lower than the one-minute winds US agencies use, so a Saffir-Simpson category is not given for it.

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.