1974–75 South-West Indian Ocean cyclone season
| 1974–75 South-West Indian Ocean cyclone season | |
|---|---|
 Season summary map | |
| Seasonal boundaries | |
| First system formed | 23 December 1974 |
| Last system dissipated | 22 April 1975 |
| Strongest storm | |
| Name | Gervaise |
| • Maximum winds | 120 km/h (75 mph) (10-minute sustained) |
| • Lowest pressure | 951 hPa (mbar) |
| Seasonal statistics | |
| Total disturbances | 10 |
| Total depressions | 8 |
| Total storms | 6 |
| Tropical cyclones | 2 |
| Total fatalities | 9 total |
| Total damage | Unknown |
| Related articles | |
The 1974–75 South-West Indian Ocean cyclone season was a below-average cyclone season. The season officially ran from November 1, 1974, to April 30, 1975.
Systems
Tropical Disturbance Adele
| Tropical disturbance (MFR) | |
  | |
| Duration | December 23 – December 24 |
|---|---|
| Peak intensity | 45 km/h (30 mph) (10-min); |
Adele existed from December 23 to December 24.
Cyclone Blandine
| Category 3 tropical cyclone (SSHWS) | |
 | |
| Duration | January 6 – January 12 |
|---|---|
| Peak intensity | 185 km/h (115 mph) (1-min); 980 hPa (mbar) |
Blandine existed from January 6 to January 12.
Cyclone Camille
| Severe tropical storm (MFR) | |
| Category 1 tropical cyclone (SSHWS) | |
  | |
| Duration | January 10 – January 21 |
|---|---|
| Peak intensity | 110 km/h (70 mph) (10-min); 995 hPa (mbar) |
This system formed southeast of the Seychelles on January 7 before becoming disorganized while interacting with northern Madagascar. The system redeveloped as a hurricane-force cyclone in the northern Mozambique Channel on January 16 before moving southeast into Madagascar on January 19.[1]
Cyclone Robyn-Deborah
| Tropical cyclone (MFR) | |
| Category 3 tropical cyclone (SSHWS) | |
  | |
| Duration | January 14 – January 24 |
|---|---|
| Peak intensity | 130 km/h (80 mph) (10-min); 960 hPa (mbar) |
This system existed from January 14 to January 24.
Tropical Depression Elsa
| Tropical depression (MFR) | |
 | |
| Duration | January 25 – January 27 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); |
Elsa existed from January 25 to January 27.
Tropical Disturbance Fernande
| Tropical disturbance (MFR) | |
 | |
| Duration | February 1 – February 1 |
|---|---|
| Peak intensity | 45 km/h (30 mph) (10-min); |
This storm lasted for only 18 hours on February 1.
Cyclone Gervaise
| Tropical cyclone (MFR) | |
| Category 1 tropical cyclone (SSHWS) | |
  | |
| Duration | February 1 – February 10 |
|---|---|
| Peak intensity | 120 km/h (75 mph) (10-min); 951 hPa (mbar) |
Intense tropical cyclone Gervaise formed on 1 February 1975 in the south of Diego Garcia. On the following day, the cyclone started to intensify gradually producing waves of 15 m high. The cyclone was moving in a west-south-west direction towards Madagascar when suddenly on 4 February 1975, the cyclone curved to a south-south-west direction, showing a potential danger to the Island of Mauritius. On 5 February 1975, the intense tropical cyclone Gervaise approached Mauritius where its eye was centered on the island on the morning of the 6th February 1975. Calm weather prevailed on the island from 09.30hr till 13hr30 and later the weather started to deteriorate again with average wind speeds over 200kmh for approx 12 hours either side of the eye and maximum gusts of 280 km/h until 2 o'clock in the morning of the 7th of February. It caused substantial damage to properties, vegetation and wildlife. Moored yachts around the coast were washed hundreds of yards inland in places due to the storm surge and in the capital Port Louis, a cargo ship of ca. 10,000 tonnes was washed up on to the quay. 6 deaths - 34 injured, 3,706 homeless.
Cyclone Heloise
| Tropical depression (MFR) | |
| Tropical depression (SSHWS) | |
 | |
| Duration | February 19 – February 26 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); 985 hPa (mbar) |
Heloise existed from February 19 to February 26.
Cyclone Ines
| Tropical storm (SSHWS) | |
 | |
| Duration | March 9 – March 19 |
|---|---|
| Peak intensity | 100 km/h (65 mph) (1-min); 985 hPa (mbar) |
Ines existed from March 9 to March 19.
Tropical Depression Junon
| Tropical depression (MFR) | |
 | |
| Duration | April 18 – April 22 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); |
Junon existed from April 18 to April 22.
See also
- Atlantic hurricane seasons: 1974, 1975
- Eastern Pacific hurricane seasons: 1974, 1975
- Western Pacific typhoon seasons: 1974, 1975
- North Indian Ocean cyclone seasons: 1974, 1975
References
- ^ Dick DeAngelis. "Hurricane Alley". Mariners Weather Log. 19 (3): 154.