Tropical Storm Ilsa (2000)
Tropical Storm Ilsa peaked at 60 kt in the South Indian between December 9, 1999 and December 17, 1999, with a lowest pressure of 980 mb, and made landfall.
Radar
Reflectivity now over Tropical Storm Ilsa. 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
- December 9, 1999 to December 17, 1999
- Peak strength
- Tropical Storm, 60 kt (69 mph)
- Lowest pressure
- 980 mb (28.94 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 6.4
- Identifier
- SH012000
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Dec 9, 00:00 | 9.0S 95.2E | 25 kt | 1002 mb | Tropical storm |
| Dec 9, 06:00 | 9.1S 95.7E | 25 kt | 1002 mb | Tropical storm |
| Dec 9, 12:00 | 9.1S 96.3E | 25 kt | 1002 mb | Tropical storm |
| Dec 9, 18:00 | 9.2S 96.8E | 25 kt | 1002 mb | Tropical storm |
| Dec 10, 00:00 | 9.4S 97.4E | 20 kt | 1001 mb | Tropical storm |
| Dec 10, 06:00 | 9.6S 97.9E | 20 kt | 999 mb | Tropical storm |
| Dec 10, 12:00 | 9.8S 98.3E | 25 kt | 997 mb | Tropical storm |
| Dec 10, 18:00 | 10.1S 99.0E | 30 kt | 996 mb | Tropical storm |
| Dec 11, 00:00 | 10.5S 99.6E | 30 kt | 993 mb | Tropical storm |
| Dec 11, 06:00 | 10.8S 100.2E | 35 kt | 988 mb | Tropical storm |
| Dec 11, 12:00 | 11.2S 100.9E | 40 kt | 985 mb | Tropical storm |
| Dec 11, 18:00 | 11.6S 101.5E | 40 kt | 983 mb | Tropical storm |
| Dec 12, 00:00 | 11.9S 102.0E | 40 kt | 980 mb | Tropical storm |
| Dec 12, 06:00 | 12.1S 102.5E | 45 kt | 981 mb | Tropical storm |
| Dec 12, 12:00 | 12.3S 102.8E | 45 kt | 985 mb | Tropical storm |
| Dec 12, 18:00 | 12.4S 103.5E | 45 kt | 985 mb | Tropical storm |
| Dec 13, 00:00 | 12.4S 104.2E | 50 kt | 986 mb | Tropical storm |
| Dec 13, 06:00 | 12.4S 105.0E | 55 kt | 990 mb | Tropical storm |
| Dec 13, 12:00 | 12.4S 105.8E | 55 kt | 990 mb | Tropical storm |
| Dec 13, 18:00 | 12.4S 106.6E | 55 kt | 990 mb | Tropical storm |
| Dec 14, 00:00 | 12.2S 107.4E | 55 kt | 990 mb | Tropical storm |
| Dec 14, 06:00 | 12.1S 108.4E | 55 kt | 990 mb | Tropical storm |
| Dec 14, 12:00 | 12.0S 109.2E | 55 kt | 990 mb | Tropical storm |
| Dec 14, 18:00 | 12.0S 110.1E | 55 kt | 990 mb | Tropical storm |
| Dec 15, 00:00 | 12.1S 111.0E | 55 kt | 990 mb | Tropical storm |
| Dec 15, 06:00 | 12.5S 112.4E | 60 kt | 990 mb | Tropical storm |
| Dec 15, 12:00 | 12.9S 113.4E | 60 kt | 990 mb | Tropical storm |
| Dec 15, 18:00 | 13.7S 114.5E | 60 kt | 992 mb | Tropical storm |
| Dec 16, 00:00 | 15.0S 116.0E | 60 kt | 992 mb | Tropical storm |
| Dec 16, 06:00 | 16.1S 117.3E | 50 kt | 992 mb | Tropical storm |
| Dec 16, 12:00 | 17.3S 118.5E | 45 kt | 994 mb | Tropical storm |
| Dec 16, 18:00 | 18.4S 119.3E | 50 kt | 994 mb | Tropical storm |
| Dec 17, 00:00 | 19.2S 120.0E | 55 kt | 994 mb | Tropical storm |
| Dec 17, 06:00 | 20.0S 120.8E | 35 kt | 994 mb | Tropical storm |
| Dec 17, 12:00 | 20.8S 121.8E | 30 kt | 995 mb | Tropical storm |
Other South Indian storms of 2000
- Cyclone JohnSouth Indian · 2000
- Cyclone AstrideSouth Indian · 2000
- Cyclone BabiolaSouth Indian · 2000
- Unnamed tropical depressionSouth Indian · 2000
- Cyclone KirrilySouth Indian · 2000
- Cyclone ConnieSouth Indian · 2000
- Tropical Storm DamienneSouth Indian · 2000
- Cyclone Eline:LeoneSouth Indian · 2000
- Tropical Storm MarciaSouth Indian · 2000
- Cyclone FeliciaSouth Indian · 2000
- Tropical Storm GloriaSouth Indian · 2000
- Cyclone NormanSouth Indian · 2000
- Unnamed tropical stormSouth Indian · 2000
- Tropical Storm OlgaSouth Indian · 2000
- Cyclone HudahSouth Indian · 2000
- Unnamed tropical stormSouth Indian · 2000
- Cyclone PaulSouth Indian · 2000
- Tropical Storm InnocenteSouth Indian · 2000
- Cyclone RositaSouth Indian · 2000
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.