1973–74 South-West Indian Ocean cyclone season
The 1973–74 South-West Indian Ocean cyclone season was a below-average cyclone season. The season officially ran from November 1, 1973, to April 30, 1974.
| 1973–74 South-West Indian Ocean cyclone season | |
|---|---|
 Season summary map | |
| Seasonal boundaries | |
| First system formed | 14 September 1973 |
| Last system dissipated | 23 April 1974 |
| Strongest storm | |
| Name | Deidre-Delinda |
| • Maximum winds | 150 km/h (90 mph) (10-minute sustained) |
| • Lowest pressure | 964 hPa (mbar) |
| Seasonal statistics | |
| Total disturbances | 8 |
| Total depressions | 7 |
| Total storms | 7 |
| Tropical cyclones | 2 |
| Intense tropical cyclones | 1 |
| Total fatalities | Unknown |
| Total damage | Unknown |
| Related articles | |
Systems
Moderate Tropical Storm Alice
| Moderate tropical storm (MFR) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | September 14 – September 24 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min); 1000 hPa (mbar) |
Alice was born around 80E, and reached its greatest intensity (Phase C plus) on September 20 to the north of Tromelin. but has resulted in some light to moderate rain over extreme northeastern Madagascar between 21 and 23, the winds not exceeding 55 km / h in the region of Diego-Suarez.[1]
Tropical Cyclone Bernadette
| Tropical cyclone (MFR) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | October 16 – October 28 |
|---|---|
| Peak intensity | 150 km/h (90 mph) (10-min); 985 hPa (mbar) |
Bernadette, more active than before, has reached the stage of a tropical cyclone in the strict sense of the international classification, in the 26th October (minimum pressure estimated of 985 mb), moderate rainfall strong enough of have been recorded on the extreme north of Madagascar and off the cape of Amber, a boat noted a peak wind of 139 km/h.
Moderate Tropical Storm Christiane
| Moderate tropical storm (MFR) | |
| Tropical storm (SSHWS) | |
 | |
| Duration | December 13 – December 21 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min); 995 hPa (mbar) |
Moderate Tropical Storm Christian existed from December 13 to December 21.
Intense Tropical Cyclone Deidre–Delinda
| Intense tropical cyclone (MFR) | |
| Category 2 tropical cyclone (SSHWS) | |
  | |
| Duration | December 26 (Crossed 80°E) – January 4 |
|---|---|
| Peak intensity | 205 km/h (125 mph) (10-min); 965 hPa (mbar) |
Tropical Cyclone Deidre-Delinda existed from December 26, 1973, to January 4, 1974.
Moderate Tropical Storm Esmeralda
| Moderate tropical storm (MFR) | |
| Tropical storm (SSHWS) | |
 | |
| Duration | December 30 – January 5 |
|---|---|
| Peak intensity | 85 km/h (50 mph) (10-min); 995 hPa (mbar) |
Moderate Tropical Storm Esmeralda existed from December 30, 1973, to January 5, 1974. The storm looped to the southeast of Madagascar, bringing several days of rainfall to Réunion, reaching 222.2 mm (8.75 in).[2]
Tropical Disturbance Fredegonde
| Tropical disturbance (MFR) | |
| Tropical depression (SSHWS) | |
 | |
| Duration | January 19 – January 23 |
|---|---|
| Peak intensity | 45 km/h (30 mph) (10-min); 1005 hPa (mbar) |
Tropical Disturbance Fredegonde existed from January 19 to January 23.
Season effects
| Name | Dates | Peak intensity | Areas affected | Damage (USD) |
Deaths | Refs | ||
|---|---|---|---|---|---|---|---|---|
| Category | Wind speed | Pressure | ||||||
| Alice | September 14 – 24, 1973 | Moderate tropical storm | 75 km/h (45 mph) | 1000 hPa (29.53 inHg) | Madagascar | None | None | [3] |
| Bernadette | October 16 – 28, 1973 | Tropical cyclone | 150 km/h (90 mph) | 985 hPa (29.09 inHg) | None | None | None | [3] |
| Christiane | December 13 – 21, 1973 | Moderate tropical storm | 75 km/h (45 mph) | 995 hPa (29.38 inHg) | None | None | None | [3] |
| Deidre–Delinda | December 26, 1973 – January 4, 1974 | Intense Tropical cyclone | 205 km/h (125 mph) | 965 hPa (28.50 inHg) | None | None | None | [3] |
| Esmeralda | December 30, 1973 – January 5, 1974 | Moderate tropical storm | 85 km/h (50 mph) | 995 hPa (29.38 inHg) | None | None | None | [3] |
| Fredegonde | February 24 – March 3, 1974 | Tropical disturbance | 45 km/h (30 mph) | 1005 hPa (29.68 inHg) | None | None | None | [3] |
| Ghislaine | February 24 – March 3, 1974 | Tropical cyclone | 150 km/h (90 mph) | 985 hPa (29.09 inHg) | None | None | None | [3] |
| Honorine | April 12 – 23, 1974 | Severe tropical storm | 95 km/h (60 mph) | 998 hPa (29.47 inHg) | None | None | None | [3] |
| Season aggregates | ||||||||
| 8 systems | 20 January – 7 May | 205 km/h (125 mph) | 965 hPa (28.50 inHg) | |||||
See also
References
- "LA SAISON CYCLONIQUE 1973-1974" (PDF). Archived (PDF) from the original on 2013-10-31.
- Tropical Storm Esmerelda, 31 December 1973-6 January 1974. National Climatic Data Center (Report). Global tropical/extratropical cyclone climatic atlas. 1996. Retrieved February 7, 2019.
- "Saison 1973-1974 des perturbations tropicales dans l'océan indien du sud-ouest" [1973-1974 Tropical disturbance season in the southwestern Indian Ocean]. Météorologie Maritime (in French). No. 143. 1989. pp. 41–43. ISSN 0222-5123.