Storm history › South Pacific › 1999 season
Cyclone Thelma (1999)
Thelma was a Category 4 cyclone of the 1999 South Pacific season. It was tracked from December 1, 1998 to December 15, 1998, about 14 days, and covered 1,767 miles.
At its peak it had winds of 155 mph (250 km/h) and a lowest pressure of 920 mb.
- Peak wind
- 155 mph
- Lowest pressure
- 920 mb
- Strongest
- Category 4 cyclone
- Duration
- 14 days
- Track length
- 1,767 mi
- Energy (ACE)
- 28.3
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
How it compares
- Peak winds: 19th highest of 671 South Pacific storms on record, tied with Cyclone Kevin (2023), Cyclone Yasi (2011), Cyclone Hamish (2009) and 2 more.
- Lowest pressure: 25th lowest of 844 South Pacific storms with a recorded pressure, tied with Cyclone Ilsa (2023), Cyclone Rewa (1994), Cyclone Fran (1992) and 2 more.
- Energy: 32% of the 1999 South Pacific season's ACE.