Tropical Depression Tilly (1971)
Tropical Depression Tilly peaked at unknown kt in the South Indian between February 13, 1971 and February 14, 1971.
Track and intensity
The whole track of Tropical Depression Tilly, 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.
The storm
- Basin
- South Indian
- Dates
- February 13, 1971 to February 14, 1971
- Peak strength
- Tropical Depression
- Landfall
- No; closest approach 2411 km (1498 mi)
- Accumulated cyclone energy
- 0.0
- Identifier
- 1971044S17083
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) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Feb 13, 00:00 | 17.0S 83.4E | Tropical storm | ||
| Feb 13, 06:00 | 19.0S 84.4E | Tropical storm | ||
| Feb 13, 12:00 | 21.0S 86.7E | Tropical storm | ||
| Feb 13, 18:00 | 23.0S 87.6E | Tropical storm | ||
| Feb 14, 00:00 | 24.0S 88.0E | Tropical storm |
Other South Indian storms of 1971
- Tropical Depression AndreeSouth Indian · 1971
- Tropical Depression BetsySouth Indian · 1971
- Tropical Depression Andrea:ClaudineSouth Indian · 1971
- Tropical Depression CarmenSouth Indian · 1971
- Tropical Depression Dominique:HilarySouth Indian · 1971
- Tropical Depression JanetSouth Indian · 1971
- Tropical Depression LorisSouth Indian · 1971
- Tropical Depression EdithSouth Indian · 1971
- Tropical Depression Ginette:MyrtleSouth Indian · 1971
- Tropical Depression FelicieSouth Indian · 1971
- Tropical Depression PollySouth Indian · 1971
- Tropical Storm RitaSouth Indian · 1971
- Cyclone Sheila:SophieSouth Indian · 1971
- Tropical Depression HelgaSouth Indian · 1971
- Tropical Depression Iphigenie:TillySouth Indian · 1971
- Tropical Depression JoelleSouth Indian · 1971
- Tropical Depression KalinkaSouth Indian · 1971
- Tropical Depression Lise:YvonneSouth Indian · 1971
- Tropical Depression Maggie:MurielSouth Indian · 1971
- Tropical Depression NellySouth Indian · 1971
- Tropical Storm MavisSouth Indian · 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.