1970–71 South-West Indian Ocean cyclone season
| 1970–71 South-West Indian Ocean cyclone season |
Season summary map
|
| Seasonal boundaries |
| First system formed |
16 September 1970 |
| Last system dissipated |
21 March 1971 |
| Strongest storm |
|
| Name |
Polly |
| • Maximum winds |
295 km/h (185 mph)
(1-minute sustained) |
| • Lowest pressure |
984 hPa (mbar) |
| Seasonal statistics |
| Total depressions |
16 |
| Total storms |
13 |
| Tropical cyclones |
8 |
| Total fatalities |
Unknown |
| Total damage |
Unknown |
| Related articles |
|
|
South-West Indian Ocean tropical cyclone seasons
1968–69, 1969–70, , 1970–71, 1971–72, 1972–73
|
| Tropical disturbance (MFR) |
| Tropical depression (SSHWS) |
|
|
| Duration |
September 16 – September 19 |
| Peak intensity |
45 km/h (30 mph) (10-min) |
| Tropical depression (MFR) |
| Tropical storm (SSHWS) |
|
|
| Duration |
October 1 – October 8 |
| Peak intensity |
55 km/h (35 mph) (10-min) |
| Moderate tropical storm (MFR) |
| Tropical storm (SSHWS) |
|
|
| Duration |
November 10 (Crossed 80°E) – November 13 |
| Peak intensity |
65 km/h (40 mph) (10-min) 970 hPa (mbar) |
| Intense tropical cyclone (MFR) |
| Category 4 tropical cyclone (SSHWS) |
|
|
| Duration |
November 20 – November 30 |
| Peak intensity |
185 km/h (115 mph) (10-min) 1001 hPa (mbar) |
| Intense tropical cyclone (MFR) |
| Category 3 tropical cyclone (SSHWS) |
|
|
| Duration |
December 12 – December 28 |
| Peak intensity |
165 km/h (105 mph) (10-min) 992 hPa (mbar) |
| Tropical depression (MFR) |
| Tropical storm (SSHWS) |
|
|
| Duration |
January 5 – January 10 |
| Peak intensity |
55 km/h (35 mph) (10-min) |
| Tropical cyclone (MFR) |
| Category 1 tropical cyclone (SSHWS) |
|
|
| Duration |
January 17 – February 6 |
| Peak intensity |
120 km/h (75 mph) (10-min) |
| Tropical cyclone (MFR) |
| Category 2 tropical cyclone (SSHWS) |
|
|
| Duration |
January 15 – January 31 |
| Peak intensity |
150 km/h (90 mph) (10-min) |
| Very intense tropical cyclone (MFR) |
| Category 5 tropical cyclone (SSHWS) |
|
|
| Duration |
January 23 – January 28 |
| Peak intensity |
295 km/h (185 mph) (10-min) 984 hPa (mbar) |
The 1970–71 South-West Indian Ocean cyclone season was a below-average cyclone season. The season officially ran from November 1, 1970, to April 30, 1971.
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