1970–71 South-West Indian Ocean cyclone season
| First system formed |
16 September 1970 |
| Last system dissipated |
21 March 1971 |
| Strongest storm1 |
Polly – 984 hPa (mbar), 295 km/h (185 mph) (1-minute sustained) |
| Total depressions |
16 |
| Total storms |
13 |
| Tropical cyclones |
8 |
| Total fatalities |
Unknown |
| Total damage |
Unknown |
| 1Strongest storm is determined by lowest pressure |
South-West Indian Ocean tropical cyclone seasons
1968–69, 1969–70, , 1970–71, 1971–72, 1972–73
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| Related articles |
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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.
Storms
Tropical Disturbance Andree
| Tropical disturbance (MFR) |
| Tropical depression (SSHWS) |
|
|
| Duration |
September 16 – September 19 |
| Peak intensity |
45 km/h (30 mph) (10-min) |
Tropical Depression Betsy
| Tropical depression (MFR) |
| Tropical storm (SSHWS) |
|
|
| Duration |
October 1 – October 8 |
| Peak intensity |
55 km/h (35 mph) (10-min) |
Moderate Tropical Storm Andrea-Claudine
| 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) |
- Andrea-Claudine, 10 November to 13 November 1970 in central Indian Ocean
Intense Tropical Cyclone Carmen
| 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 Hilary-Dominique
| 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) |
- Hilary, 11 to 18 December 1970 in central Indian Ocean
Tropical Depression Edith
| Tropical depression (MFR) |
| Tropical storm (SSHWS) |
|
|
| Duration |
January 5 – January 10 |
| Peak intensity |
55 km/h (35 mph) (10-min) |
Tropical Cyclone Felcie
| Tropical cyclone (MFR) |
| Category 1 tropical cyclone (SSHWS) |
|
|
| Duration |
January 17 – February 6 |
| Peak intensity |
120 km/h (75 mph) (10-min) |
Tropical Cyclone Myrtle-Ginette
| Tropical cyclone (MFR) |
| Category 2 tropical cyclone (SSHWS) |
|
|
| Duration |
January 15 – January 31 |
| Peak intensity |
150 km/h (90 mph) (10-min) |
- Myrtle/Ginette, 15 to 19 January 1971 near Cocos Island and moved west
Very Intense Tropical Cyclone Polly
| 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) |
- Polly, 20 to 29 January 1971 in central Indian Ocean
Tropical Cyclone Helga
| Tropical cyclone (MFR) |
| Category 2 tropical cyclone (SSHWS) |
|
|
| Duration |
February 2 – February 15 |
| Peak intensity |
150 km/h (90 mph) (10-min) |
Tropical Cyclone Iphigenie
| Tropical cyclone (MFR) |
| Category 1 tropical cyclone (SSHWS) |
|
|
| Duration |
February 10 – February 17 |
| Peak intensity |
120 km/h (75 mph) (10-min) 970 hPa (mbar) |
Severe Tropical Storm Joelle
| Severe tropical storm (MFR) |
| Category 1 tropical cyclone (SSHWS) |
|
|
| Duration |
February 15 – February 25 |
| Peak intensity |
100 km/h (65 mph) (10-min) |
Tropical Cyclone Kalinka
| Tropical cyclone (MFR) |
| Category 2 tropical cyclone (SSHWS) |
|
|
| Duration |
February 16 – February 26 |
| Peak intensity |
140 km/h (85 mph) (10-min) |
Tropical Cyclone Yvonne-Lise
| Tropical cyclone (MFR) |
| Category 1 tropical cyclone (SSHWS) |
|
|
| Duration |
February 21 – March 3 |
| Peak intensity |
130 km/h (80 mph) (10-min) |
Intense Tropical Cyclone Maggie-Muriel
| Intense tropical cyclone (MFR) |
| Category 3 tropical cyclone (SSHWS) |
|
|
| Duration |
March 7 – March 18 |
| Peak intensity |
165 km/h (105 mph) (10-min) 951 hPa (mbar) |
- Maggie/Muriel, 7 to 20 March 1971 in central Indian Ocean
Severe Tropical Storm Nelly
| Severe tropical storm (MFR) |
| Category 1 tropical cyclone (SSHWS) |
|
|
| Duration |
March 12 – March 22 |
| Peak intensity |
110 km/h (70 mph) (10-min) |
See also
- Atlantic hurricane seasons: 1970, 1971
- Eastern Pacific hurricane seasons: 1970, 1971
- Western Pacific typhoon seasons: 1970, 1971
- North Indian Ocean cyclone seasons: 1970, 1971
References
