Storm history › South Indian Ocean › 2009 season
Cyclone Ilsa (2009)
Ilsa was a Category 3 cyclone of the 2009 South Indian Ocean season. It was tracked from March 15, 2009 to March 26, 2009, about 12 days, and covered 3,599 miles.
At its peak it had winds of 115 mph (185 km/h) and a lowest pressure of 948 mb.
Its closest pass to a major city was 62 miles from Kupang, Indonesia.
- Peak wind
- 115 mph
- Lowest pressure
- 948 mb
- Strongest
- Category 3 cyclone
- Duration
- 12 days
- Track length
- 3,599 mi
- Energy (ACE)
- 12.9
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
Closest pass to major cities
| City | Closest pass |
|---|---|
| Kupang, Indonesia | 62 mi (99 km) |
How it compares
- Peak winds: 187th highest of 951 South Indian Ocean storms on record, tied with Cyclone Gombe (2022), Cyclone Marian (2021), Cyclone Ferdinand (2020) and 29 more.
- Lowest pressure: 208th lowest of 1,029 South Indian Ocean storms with a recorded pressure, tied with Cyclone Anggrek (2024), Cyclone Christine (2014), Cyclone Rusty (2013) and 3 more.
- Energy: 16% of the 2009 South Indian Ocean season's ACE.