Storm history › South Indian Ocean
2011 South Indian Ocean cyclone season
The 2011 South Indian Ocean season had 13 storms of tropical-storm strength or more, 5 of them cyclones and 1 major (Category 3 or stronger).
The first storm was tracked from October 25, 2010 and the last ended on April 18, 2011. The strongest by wind was Cyclone Bingiza (2011), at 115 mph (185 km/h). The season's accumulated cyclone energy (ACE) was 55.9.
- Storms
- 13
- Cyclones
- 5
- Major
- 1
- Category 5
- 0
- ACE
- 55.9
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
Storms
| Storm | Dates | Peak |
|---|---|---|
| Unnamed tropical storm 1, 2011 South Indian Ocean | Oct 25 – Oct 31 | 40 mph |
| Tropical Storm Anggrek | Oct 29 – Nov 6 | 65 mph |
| Cyclone Abele | Nov 26 – Dec 5 | 90 mph |
| Unnamed tropical depression 4, 2011 South Indian Ocean | Dec 15 – Dec 20 | 35 mph |
| Unnamed tropical depression 5, 2011 South Indian Ocean | Dec 29 – Jan 5 | 35 mph |
| Tropical Storm Vince | Jan 9 – Jan 16 | 50 mph |
| Cyclone Bianca | Jan 21 – Jan 30 | 110 mph |
| Cyclone Bingiza | Feb 6 – Feb 21 | 115 mph |
| Unnamed tropical storm 9, 2011 South Indian Ocean | Feb 9 – Feb 13 | 40 mph |
| Cyclone Carlos | Feb 14 – Feb 27 | 75 mph |
| Cyclone Dianne | Feb 14 – Feb 23 | 90 mph |
| Tropical Storm Cherono | Mar 13 – Mar 25 | 50 mph |
| Unnamed tropical storm 13, 2011 South Indian Ocean | Mar 29 – Apr 5 | 40 mph |
| Unnamed tropical storm 14, 2011 South Indian Ocean | Apr 11 – Apr 16 | 60 mph |
| Tropical Storm Errol | Apr 12 – Apr 18 | 65 mph |