Storm history › South Indian Ocean › 2011 season
Cyclone Dianne (2011)
Dianne was a Category 1 cyclone of the 2011 South Indian Ocean season. It was tracked from February 14, 2011 to February 23, 2011, about 9 days, and covered 1,742 miles.
At its peak it had winds of 90 mph (150 km/h) and a lowest pressure of 963 mb.
- Peak wind
- 90 mph
- Lowest pressure
- 963 mb
- Strongest
- Category 1 cyclone
- Duration
- 9 days
- Track length
- 1,742 mi
- Energy (ACE)
- 9.7
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
How it compares
- Peak winds: 300th highest of 951 South Indian Ocean storms on record, tied with Cyclone Bakung (2026), Cyclone Jude (2025), Cyclone Hidaya (2024) and 19 more.
- Lowest pressure: 331st lowest of 1,029 South Indian Ocean storms with a recorded pressure, tied with Cyclone Corentin (2016), Cyclone Abele (2011), Cyclone Imani (2010) and 3 more.
- Energy: 17% of the 2011 South Indian Ocean season's ACE.