1990–91 South Pacific cyclone season
| 1990–91 South Pacific cyclone season | |
|---|---|
Season summary map
|
|
| Seasonal boundaries | |
| First system formed | November 23, 1990 |
| Last system dissipated | May 19, 1991 |
| Strongest storm | |
| Name | Sina |
| • Maximum winds | 140 km/h (85 mph) (10-minute sustained) |
| • Lowest pressure | 960 hPa (mbar) |
| Seasonal statistics | |
| Total depressions | 5 |
| Tropical cyclones | 3 |
| Severe tropical cyclones | 1 |
| Total fatalities | None reported |
| Total damage | $18.5 million (1991 USD) |
| Related articles | |
| Category 3 severe tropical cyclone (Australian scale) | |
| Category 4 tropical cyclone (SSHWS) | |
  |
|
| Duration | November 20 – December 4 |
|---|---|
| Peak intensity | 140 km/h (85 mph) (10-min) 960 hPa (mbar) |
| Category 2 tropical cyclone (Australian scale) | |
| Tropical storm (SSHWS) | |
  |
|
| Duration | May 11 – May 13 |
|---|---|
| Peak intensity | 110 km/h (70 mph) (10-min) 975 hPa (mbar) |
The 1990–91 South Pacific cyclone season was one of the least active cyclone seasons, with only three tropical cyclones occurring within the South Pacific basin which is to the east of 160°E. The season officially ran from November 1, 1990, to April 30, 1991, with the first disturbance of the season forming on November 23 and the last disturbance dissipating on May 19. This is the period of the year when most tropical cyclones form within the South Pacific Ocean. During the season there was no deaths recorded from any of the tropical cyclones while they were within the basin. However six people were killed by Cyclone Joy, when it made landfall on Australia. As a result of the impacts caused by Joy and Sina, the names were retired from the tropical cyclone naming lists.
During the season, tropical cyclones were monitored by the Tropical Cyclone Warning Centers (TCWC) in Nadi, Fiji, and in Wellington, New Zealand. Whilst tropical cyclones that moved to the west of 160°E were monitored as a part of the Australian region. Both the United States Joint Typhoon Warning Center (JTWC) and the Naval Western Oceanography Center (NWOC) issued unofficial warnings within the southern Pacific. The JTWC issued warnings between 160°E and the International Date Line whilst the NWOC issued warnings for tropical cyclones forming between the International Date Line and the coasts of the Americas. Both the JTWC and the NWOC designated tropical cyclones with a number and a P suffix with numbers assigned in order to tropical cyclones developing within the whole of the Southern Hemisphere. TCWC Nadi, TCWC Wellington and TCWC Brisbane all use the Australian Tropical Cyclone Intensity Scale and estimate wind speeds over a ten-minute period, while the JTWC estimates sustained winds over a one-minute period, which are subsequently compared to the Saffir–Simpson hurricane wind scale (SSHWS).
...
Wikipedia