Storm history › South Indian Ocean › 2006 season
Cyclone Alvin / Bertie (2006)
Alvin / Bertie was a Category 4 cyclone of the 2006 South Indian Ocean season. It was tracked from November 18, 2005 to December 3, 2005, about 15 days, and covered 2,571 miles.
At its peak it had winds of 130 mph (215 km/h) and a lowest pressure of 927 mb.
- Peak wind
- 130 mph
- Lowest pressure
- 927 mb
- Strongest
- Category 4 cyclone
- Duration
- 15 days
- Track length
- 2,571 mi
- Energy (ACE)
- 18.2
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
How it compares
- Peak winds: 99th highest of 951 South Indian Ocean storms on record, tied with Cyclone Bheki (2025), Cyclone Sean (2025), Cyclone Anggrek (2024) and 35 more.
- Lowest pressure: 72nd lowest of 1,029 South Indian Ocean storms with a recorded pressure, tied with Cyclone Dora (2007), Cyclone Indlala (2007), Cyclone Floyd (2006) and 15 more.
- Energy: 19% of the 2006 South Indian Ocean season's ACE.