1970–71 South-West Indian Ocean cyclone season

1970–71 South-West Indian Ocean cyclone season
Season summary map
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
Related articles

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)

Intense Tropical Cyclone Carmen

Intense tropical cyclone (MFR)
Category 4 tropical cyclone (SSHWS)
Clockwise vortex
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)

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)
Clockwise vortex
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)
Clockwise vortex
Duration January 15 – January 31
Peak intensity 150 km/h (90 mph) (10-min) 

Very Intense Tropical Cyclone Polly

Very intense tropical cyclone (MFR)
Category 5 tropical cyclone (SSHWS)
Clockwise vortex
Duration January 23 – January 28
Peak intensity 295 km/h (185 mph) (10-min)  984 hPa (mbar)

Tropical Cyclone Helga

Tropical cyclone (MFR)
Category 2 tropical cyclone (SSHWS)
Clockwise vortex
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)
Clockwise vortex
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)
Clockwise vortex
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)
Clockwise vortex
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)
Clockwise vortex
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)
Clockwise vortex
Duration March 7 – March 18
Peak intensity 165 km/h (105 mph) (10-min)  951 hPa (mbar)

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

References

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