Unnamed tropical depression (1991)
Unnamed tropical depression peaked at 28 kt in the South Indian between March 30, 1991 and April 3, 1991, with a lowest pressure of 998 mb, and made landfall.
Radar
Reflectivity now over Unnamed tropical depression. Open it to see storms, cones and warnings on the map.
Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.
The storm
- Basin
- South Indian
- Dates
- March 30, 1991 to April 3, 1991
- Peak strength
- Tropical Depression, 28 kt (32 mph), ten-minute wind
- Lowest pressure
- 998 mb (29.47 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 0.0
- Identifier
- 1991089S18052
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 |
|---|---|---|---|---|
| Mar 30, 06:00 | 17.8S 52.3E | 20 kt | 1005 mb | Tropical storm |
| Mar 30, 12:00 | 17.6S 52.1E | 20 kt | 1005 mb | Tropical storm |
| Mar 30, 18:00 | 17.5S 51.9E | 20 kt | 1005 mb | Tropical storm |
| Mar 31, 00:00 | 17.4S 51.6E | 20 kt | 1005 mb | Tropical storm |
| Mar 31, 06:00 | 17.3S 51.3E | 20 kt | 1005 mb | Tropical storm |
| Mar 31, 12:00 | 17.2S 51.1E | 20 kt | 1003 mb | Tropical storm |
| Mar 31, 18:00 | 17.3S 50.9E | 20 kt | 1003 mb | Tropical storm |
| Apr 1, 00:00 | 17.5S 50.9E | 20 kt | 1003 mb | Tropical storm |
| Apr 1, 06:00 | 17.6S 51.1E | 20 kt | 1003 mb | Tropical storm |
| Apr 1, 12:00 | 17.8S 51.3E | 21 kt | 1002 mb | Tropical storm |
| Apr 1, 18:00 | 17.8S 51.0E | 24 kt | 1000 mb | Tropical storm |
| Apr 2, 00:00 | 17.8S 50.4E | 28 kt | 998 mb | Tropical storm |
| Apr 2, 06:00 | 17.7S 49.8E | 28 kt | 998 mb | Tropical storm |
| Apr 2, 12:00 | 17.7S 49.3E | 24 kt | 1002 mb | Tropical storm |
| Apr 2, 18:00 | 17.8S 48.8E | Disturbance | ||
| Apr 3, 00:00 | 17.9S 48.4E | Disturbance | ||
| Apr 3, 06:00 | 18.0S 47.9E | Disturbance |
Other South Indian storms of 1991
- Unnamed tropical depressionSouth Indian · 1991
- Unnamed tropical depressionSouth Indian · 1991
- Unnamed tropical stormSouth Indian · 1991
- Tropical Storm LaurenceSouth Indian · 1991
- Cyclone AlisonSouth Indian · 1991
- Cyclone BellaSouth Indian · 1991
- Tropical Storm ChrisSouth Indian · 1991
- Tropical Storm CynthiaSouth Indian · 1991
- Cyclone DebraSouth Indian · 1991
- Tropical Storm ElmaSouth Indian · 1991
- Cyclone FatimaSouth Indian · 1991
- Cyclone ErrolSouth Indian · 1991
- Cyclone MarianSouth Indian · 1991
- Tropical Storm FifiSouth Indian · 1991
- Tropical Storm GritelleSouth Indian · 1991
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. 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.
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.