Storm history › South Indian Ocean
1966 South Indian Ocean cyclone season
The 1966 South Indian Ocean season had 3 storms of tropical-storm strength or more, 1 of them cyclones and 0 major (Category 3 or stronger).
The first storm was tracked from August 9, 1965 and the last ended on January 1, 1970. The strongest by wind was Cyclone Nellie (1966), at 80 mph (130 km/h). The season's accumulated cyclone energy (ACE) was 2.9.
- Storms
- 3
- Cyclones
- 1
- Major
- 0
- Category 5
- 0
- ACE
- 2.9
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
Storms
| Storm | Dates | Peak |
|---|---|---|
| Unnamed storm 1, 1966 South Indian Ocean | Aug 9 – Aug 14 | — |
| Storm Anne | Aug 15 – Aug 15 | — |
| Storm Brenda | Aug 16 – Aug 18 | — |
| Storm Alice | Nov 30 – Dec 5 | — |
| Storm Amanda / Gisele | Dec 20 – Jan 2 | — |
| Storm Claude | Dec 24 – Jan 10 | — |
| Tropical Depression Carol-Daisy | Dec 25 – Dec 29 | 30 mph |
| Tropical Depression Carol-Daisy | Dec 30 – Jan 2 | 35 mph |
| Unnamed storm 9, 1966 South Indian Ocean | Jan 1 – Jan 3 | — |
| Storm Denise | Jan 2 – Jan 11 | — |
| Unnamed storm 11, 1966 South Indian Ocean | Jan 11 – Jan 14 | — |
| Storm Joy | Jan 15 – Jan 20 | — |
| Unnamed storm 13, 1966 South Indian Ocean | Jan 16 – Jan 19 | — |
| Storm Evelyn | Jan 19 – Jan 20 | — |
| Storm Francine | Jan 30 – Feb 1 | — |
| Storm Lisa | Feb 4 – Feb 10 | — |
| Storm Germaine | Feb 14 – Feb 17 | — |
| Storm Hilary | Feb 20 – Feb 23 | — |
| Tropical Storm Judith / Martha | Feb 23 – Mar 8 | 45 mph |
| Storm Ivy | Mar 3 – Mar 12 | — |
| Unnamed storm 21, 1966 South Indian Ocean | Mar 6 – Mar 7 | — |
| Tropical Storm Kay / Nancy | Mar 13 – Mar 29 | 45 mph |
| Cyclone Nellie | Mar 21 – Mar 28 | 80 mph |
| Storm Sandra | Mar 21 – Mar 24 | — |
| Storm Shirley | Mar 28 – Apr 4 | — |
| Storm Lily | Apr 22 – May 1 | — |