The 1861 season

Unnamed tropical depression (1861)

Unnamed tropical depression peaked at unknown kt in the South Indian between April 10, 1861 and April 17, 1861.

Radar

Reflectivity now over Unnamed tropical depression. 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
April 10, 1861 to April 17, 1861
Peak strength
Tropical Depression
Landfall
No; closest approach 1055 km (656 mi)
Accumulated cyclone energy
0.0
Identifier
1861101S09083

Deaths and damage

No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.

Track

Time (UTC)PositionWindPressureStatus
Apr 10, 18:009.3S 83.1ENot reported
Apr 11, 00:009.4S 82.2ENot reported
Apr 11, 06:009.4S 81.5ENot reported
Apr 11, 12:009.4S 81.0ENot reported
Apr 11, 18:009.5S 80.5ENot reported
Apr 12, 00:009.6S 80.0ENot reported
Apr 12, 06:009.7S 79.4ENot reported
Apr 12, 12:009.8S 78.9ENot reported
Apr 12, 18:009.9S 78.3ENot reported
Apr 13, 00:0010.0S 77.7ENot reported
Apr 13, 06:0010.2S 77.1ENot reported
Apr 13, 12:0010.3S 76.3ENot reported
Apr 13, 18:0010.5S 75.5ENot reported
Apr 14, 00:0010.8S 74.8ENot reported
Apr 14, 06:0011.1S 74.0ENot reported
Apr 14, 12:0011.5S 73.0ENot reported
Apr 14, 18:0011.9S 72.0ENot reported
Apr 15, 00:0012.4S 71.0ENot reported
Apr 15, 06:0012.9S 70.2ENot reported
Apr 15, 12:0013.3S 69.6ENot reported
Apr 15, 18:0013.7S 69.2ENot reported
Apr 16, 00:0014.0S 68.8ENot reported
Apr 16, 06:0014.3S 68.4ENot reported
Apr 16, 12:0014.8S 67.9ENot reported
Apr 16, 18:0015.3S 67.5ENot reported
Apr 17, 00:0015.8S 67.1ENot reported
Apr 17, 06:0016.2S 66.8ENot reported

Other South Indian storms of 1861

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.