The 1971 season

Tropical Depression Nelly (1971)

Tropical Depression Nelly peaked at unknown kt in the South Indian between March 12, 1971 and March 26, 1971, and made landfall.

Track and intensity

The whole track of Tropical Depression Nelly, colored by strength, with the other storms of the 1971 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

Open the live map with storms, cones and warnings

The storm

Basin
South Indian
Dates
March 12, 1971 to March 26, 1971
Peak strength
Tropical Depression
Landfall
Yes
Accumulated cyclone energy
0.0
Identifier
SH251971

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
Mar 12, 06:0016.0S 39.2ETropical storm
Mar 12, 12:0015.5S 39.0ETropical storm
Mar 12, 18:0015.0S 38.6ETropical storm
Mar 13, 00:0014.7S 38.0ETropical storm
Mar 13, 06:0014.8S 37.2ETropical storm
Mar 13, 12:0015.3S 36.9ETropical storm
Mar 13, 18:0016.0S 36.9ETropical storm
Mar 14, 00:0017.0S 37.3ETropical storm
Mar 14, 06:0018.0S 38.0ETropical storm
Mar 14, 12:0018.6S 38.6ETropical storm
Mar 14, 18:0019.0S 39.0ETropical storm
Mar 15, 00:0019.3S 39.5ETropical storm
Mar 15, 06:0018.5S 39.9ETropical storm
Mar 15, 12:0019.3S 40.5ETropical storm
Mar 15, 18:0020.0S 41.1ETropical storm
Mar 16, 00:0020.5S 41.6ETropical storm
Mar 16, 06:0021.0S 41.9ETropical storm
Mar 16, 12:0021.4S 41.6ETropical storm
Mar 16, 18:0021.8S 40.9ETropical storm
Mar 17, 00:0022.2S 40.0ETropical storm
Mar 17, 06:0022.5S 39.2ETropical storm
Mar 17, 12:0022.6S 38.8ETropical storm
Mar 17, 18:0022.7S 38.4ETropical storm
Mar 18, 00:0022.8S 38.0ETropical storm
Mar 18, 06:0023.0S 37.6ETropical storm
Mar 18, 12:0023.1S 37.3ETropical storm
Mar 18, 18:0023.2S 37.0ETropical storm
Mar 19, 00:0023.5S 36.8ETropical storm
Mar 19, 06:0023.9S 36.7ETropical storm
Mar 19, 12:0024.2S 36.7ETropical storm
Mar 19, 18:0024.5S 36.8ETropical storm
Mar 20, 00:0024.8S 36.9ETropical storm
Mar 20, 06:0025.1S 37.1EMixed
Mar 20, 12:0025.4S 37.4EMixed
Mar 20, 18:0025.6S 37.7EMixed
Mar 21, 00:0025.8S 37.9EMixed
Mar 21, 06:0026.1S 38.1EMixed
Mar 21, 12:0026.7S 38.6EMixed
Mar 21, 18:0027.6S 39.4EMixed
Mar 22, 00:0028.3S 40.2EMixed
Mar 22, 06:0029.0S 41.0EMixed
Mar 22, 12:0029.5S 41.7EMixed
Mar 22, 18:0029.9S 42.5EMixed
Mar 23, 00:0030.2S 43.5EMixed
Mar 23, 06:0030.6S 44.9EMixed
Mar 23, 12:0031.2S 46.5EMixed
Mar 23, 18:0031.9S 48.1EMixed
Mar 24, 00:0032.5S 49.6EMixed
Mar 24, 06:0033.0S 51.0EMixed
Mar 24, 12:0032.8S 50.8EExtratropical
Mar 24, 18:0032.8S 50.5EExtratropical
Mar 25, 00:0032.8S 50.1EExtratropical
Mar 25, 06:0033.0S 49.9EExtratropical
Mar 25, 12:0033.2S 49.4EExtratropical
Mar 25, 18:0033.9S 48.9EExtratropical
Mar 26, 00:0035.0S 48.3EExtratropical
Mar 26, 06:0036.0S 48.0EExtratropical

Other South Indian storms of 1971

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.