Storm history › South Indian Ocean
1866 South Indian Ocean cyclone season
The 1866 South Indian Ocean season had 0 storms of tropical-storm strength or more, 0 of them cyclones and 0 major (Category 3 or stronger).
The first storm was tracked from November 30, 1865 and the last ended on January 1, 1970. The season's accumulated cyclone energy (ACE) was 0.0.
- Storms
- 0
- Cyclones
- 0
- Major
- 0
- Category 5
- 0
- ACE
- 0.0
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
Storms
| Storm | Dates | Peak |
|---|---|---|
| Unnamed storm 1, 1866 South Indian Ocean | Nov 30 – Dec 6 | — |
| Unnamed storm 2, 1866 South Indian Ocean | Jan 1 – Jan 9 | — |
| Unnamed storm 3, 1866 South Indian Ocean | Jan 31 – Feb 3 | — |
| Unnamed storm 4, 1866 South Indian Ocean | Feb 1 – Feb 5 | — |
| Unnamed storm 5, 1866 South Indian Ocean | Feb 28 – Mar 8 | — |
| Unnamed storm 6, 1866 South Indian Ocean | Mar 20 – Mar 24 | — |
| Unnamed storm 7, 1866 South Indian Ocean | Mar 31 – Apr 5 | — |
| Unnamed storm 8, 1866 South Indian Ocean | Apr 10 – Apr 15 | — |
| Unnamed storm 9, 1866 South Indian Ocean | Apr 10 – Apr 13 | — |
| Unnamed storm 10, 1866 South Indian Ocean | Apr 11 – Apr 16 | — |
| Unnamed storm 11, 1866 South Indian Ocean | Apr 11 – Apr 13 | — |
| Unnamed storm 12, 1866 South Indian Ocean | Apr 11 – Apr 15 | — |
| Unnamed storm 13, 1866 South Indian Ocean | Apr 11 – Apr 16 | — |