Tropical Storm Iadine (1981)
Tropical Storm Iadine peaked at 55 kt in the South Indian between February 16, 1981 and February 25, 1981, and made landfall.
Track and intensity
The whole track of Tropical Storm Iadine, colored by strength, with the other storms of the 1981 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 16, 1981 to February 25, 1981
- Peak strength
- Tropical Storm, 55 kt (63 mph)
- Landfall
- Yes
- Accumulated cyclone energy
- 3.2
- Identifier
- SH171981
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 16, 12:00 | 12.4S 54.8E | 25 kt | Tropical storm | |
| Feb 16, 18:00 | 12.4S 53.6E | 30 kt | Tropical storm | |
| Feb 17, 00:00 | 12.4S 52.6E | 30 kt | Tropical storm | |
| Feb 17, 06:00 | 12.4S 51.7E | 30 kt | Tropical storm | |
| Feb 17, 12:00 | 12.5S 50.9E | 30 kt | Tropical storm | |
| Feb 17, 18:00 | 12.7S 49.5E | 35 kt | Tropical storm | |
| Feb 18, 00:00 | 12.9S 48.1E | 40 kt | Tropical storm | |
| Feb 18, 06:00 | 13.1S 47.3E | 45 kt | Tropical storm | |
| Feb 18, 12:00 | 13.4S 46.5E | 45 kt | Tropical storm | |
| Feb 18, 18:00 | 13.8S 45.7E | 45 kt | Tropical storm | |
| Feb 19, 00:00 | 14.2S 45.0E | 45 kt | Tropical storm | |
| Feb 19, 06:00 | 14.6S 44.5E | 45 kt | Tropical storm | |
| Feb 19, 12:00 | 15.0S 44.2E | 45 kt | Tropical storm | |
| Feb 19, 18:00 | 15.4S 43.9E | 50 kt | Tropical storm | |
| Feb 20, 00:00 | 15.9S 43.8E | 55 kt | Tropical storm | |
| Feb 20, 06:00 | 16.5S 43.9E | 55 kt | Tropical storm | |
| Feb 20, 12:00 | 17.1S 44.1E | 50 kt | Tropical storm | |
| Feb 20, 18:00 | 17.4S 44.4E | 45 kt | Tropical storm | |
| Feb 21, 00:00 | 17.8S 44.7E | 40 kt | Tropical storm | |
| Feb 21, 06:00 | 18.8S 45.1E | 35 kt | Tropical storm | |
| Feb 21, 12:00 | 19.8S 45.6E | 30 kt | Tropical storm | |
| Feb 21, 18:00 | 20.7S 46.3E | 25 kt | Tropical storm | |
| Feb 22, 00:00 | 21.5S 47.0E | 20 kt | Tropical storm | |
| Feb 22, 06:00 | 22.3S 47.8E | 20 kt | Tropical storm | |
| Feb 22, 12:00 | 23.1S 48.7E | 25 kt | Tropical storm | |
| Feb 22, 18:00 | 24.0S 49.9E | 25 kt | Tropical storm | |
| Feb 23, 00:00 | 25.0S 51.5E | 30 kt | Tropical storm | |
| Feb 23, 06:00 | 26.2S 53.5E | 30 kt | Tropical storm | |
| Feb 23, 12:00 | 27.7S 55.9E | 35 kt | Tropical storm | |
| Feb 23, 18:00 | 27.8S 55.8E | Not reported | ||
| Feb 24, 00:00 | 28.7S 57.8E | Not reported | ||
| Feb 24, 06:00 | 29.4S 60.8E | Not reported | ||
| Feb 24, 12:00 | 31.2S 62.3E | Tropical storm | ||
| Feb 24, 18:00 | 32.4S 62.5E | Not reported | ||
| Feb 25, 00:00 | 33.6S 62.4E | Not reported | ||
| Feb 25, 06:00 | 34.9S 62.0E | Not reported | ||
| Feb 25, 12:00 | 36.0S 61.5E | Extratropical |
Other South Indian storms of 1981
- Cyclone Adelaide:AliceSouth Indian · 1981
- Tropical Depression BettinaSouth Indian · 1981
- Tropical Depression Bert:ChristeSouth Indian · 1981
- Tropical Storm CarolSouth Indian · 1981
- Cyclone CarolSouth Indian · 1981
- Tropical Storm DanSouth Indian · 1981
- Tropical Depression DianaSouth Indian · 1981
- Tropical Storm EdnaSouth Indian · 1981
- Cyclone FelixSouth Indian · 1981
- Tropical Depression EdwigSouth Indian · 1981
- Cyclone FlorineSouth Indian · 1981
- Cyclone MabelSouth Indian · 1981
- Tropical Storm GaelleSouth Indian · 1981
- Tropical Depression GaelleSouth Indian · 1981
- Tropical Storm HelyetteSouth Indian · 1981
- Cyclone NeilSouth Indian · 1981
- Cyclone JohanneSouth Indian · 1981
- Tropical Storm KlaraSouth Indian · 1981
- Cyclone OlgaSouth Indian · 1981
- Tropical Storm LisaSouth Indian · 1981
- Tropical Storm PaddySouth Indian · 1981
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.