1979–80 South Pacific cyclone season

1979–80 South Pacific cyclone season
Season summary map
First system formed December 9, 1979
Last system dissipated April 8, 1980
Strongest storm1  – (10-minute sustained)
Total depressions 8
Tropical cyclones 7
Severe tropical cyclones 2
Total fatalities Unknown
Total damage Unknown
1Strongest storm is determined by lowest pressure
South Pacific tropical cyclone seasons
1977–78, 1978–79, 1979–80, 1980–81, 1982–83
Related articles

The 1979–80 South Pacific cyclone season saw mostly weak systems.

Seasonal summary

Storms

Tropical Cyclone Ofa

Category 2 tropical cyclone (Australian scale)
Duration December 9 – December 15
Peak intensity 100 km/h (65 mph) (10-min)  980 hPa (mbar)

Ofa was classified on December 9. For several days it slowly deepened and on December 12 attained peak intensity while moving eastward. Three days later Ofa was no more.

Severe Tropical Cyclone Peni

Category 3 severe tropical cyclone (Australian scale)
Category 1 tropical cyclone (SSHWS)
Clockwise vortex
Duration January 1 – January 6
Peak intensity 120 km/h (75 mph) (10-min)  970 hPa (mbar)

Peni existed from January 1 to 6.

Tropical Cyclone Rae

Category 1 tropical cyclone (Australian scale)
Tropical depression (SSHWS)
Clockwise vortex
Duration February 2 – February 5
Peak intensity 65 km/h (40 mph) (10-min)  998 hPa (mbar)

Rae lasted five days from February 2 to 7. It remained weak.

Severe Tropical Cyclone Sina

Category 3 severe tropical cyclone (Australian scale)
Category 1 tropical cyclone (SSHWS)
Duration March 9 – March 16
Peak intensity 120 km/h (75 mph) (10-min)  970 hPa (mbar)

During the opening days of March 1980, a broad trough of low pressure, extended from Vanuatu to Queensland, Australia.[1] A tropical depression subsequently developed, along this trough during March 9, near Rennell Island in the Solomon Islands.[1][2] Over the next few days the system initially moved south-eastwards into the Australian region, as it gradually developed further before it turned south-westwards towards the South Pacific during March 10.[1] The Australian Bureau of Meteorology, subsequently reported that the depression, had developed into a tropical cyclone and named it Sina during March 11.[1] The system subsequently moved south-eastwards and back into the South Pacific basin, where it continued to intensify and move south-eastwards. During March 13, the system peaked as a Category 3 severe tropical cyclone with 10-minute sustained wind speeds estimated at 120 km/h (75 mph), as it passed about 200 km (125 mi) to the southwest of New Caledonia.[1][3] After the system had peaked, it accelerated south-eastwards while gradually weakened and transitioning into a cold cored low.[1][3] The system impacted northern New Zealand during March 15, before it was last noted during the following day.[1][3]

Tropical Cyclone Tia

Category 1 tropical cyclone (Australian scale)
Tropical storm (SSHWS)
Clockwise vortex
Duration March 22 – March 27
Peak intensity 85 km/h (50 mph) (10-min) 

Tia affected Fiji and Tonga.

Tropical Cyclone Val

Category 1 tropical cyclone (Australian scale)
Tropical storm (SSHWS)
Clockwise vortex
Duration March 25 – March 28
Peak intensity 75 km/h (45 mph) (10-min) 

Val affected Wallis and Futuna between March 25 - 29.

Tropical Cyclone Wally

Category 1 tropical cyclone (Australian scale)
Tropical storm (SSHWS)
Clockwise vortex
Duration April 1 – April 8
Peak intensity 65 km/h (40 mph) (10-min)  995 hPa (mbar)

Wally lasted in the southern Pacific from April 1 to 7 and was a category one cyclone on the Australian tropical cyclone intensity scale with a peak pressure of 990 HpA/mbar. During its lifetime it made landfall on the second biggest island of Fiji – Viti Levu.

Other systems

During January 9, the extratropical remnants of Tropical Cyclone Paul briefly moved into the region, before they moved back into the Australian region during the next day.[3][1] The remnants subsequently moved back into the region during January 12, when they were last noted to the south of New Zealand's South Island.[3] The precursor tropical depression to Severe Tropical Cyclone Simon, developed within the monsoon trough, to the northeast of New Caledonia during February 20.[1] Over the next day the system moved eastwards and into the Australian region, where it ultimately developed into a severe tropical cyclone and impacted Queensland.[3][1] During February 28, Simon's extratropical remnants moved back into the basin and impacted New Zealand, before they were last noted during March 3.[3][1]

Season effects

This table lists all the storms that developed in the South Pacific to the east of longitude 160°E during the 1979–80 season. It includes their intensity on the Australian tropical cyclone intensity scale, duration, name, landfalls, deaths, and damages. All data is taken from the archives of the Fiji Meteorological Service and MetService, and all of the damage figures are in 1980 USD.

Name Dates active Peak classification Sustained
wind speeds		 Pressure Land areas affected Damage
(USD)		 Deaths Refs
Ofa December 9 – 15 Category 2 tropical cyclone Wallis and Futuna
Peni January 1 – 6 Category 3 severe tropical cyclone Fiji Minor [4]
Rae Category 1 tropical cyclone Vanuatu
Sina March 9 – 16 Category 3 severe tropical cyclone 120 km/h (75 mph) 970 hPa (28.64 inHg) New Caledonia, New Zealand
Tia March 22 – 27 Category 1 tropical cyclone Fiji Moderate 4 [4]
Val March 25 – 29 Category 1 tropical cyclone
Wally April 1 – 8 Category 1 tropical cyclone 75 km/h (45 mph) 990 hPa (29.25 inHg) Fiji $2.26 million 18 [5][4]
Season Aggregates
10 systems December 9 – April 8 120 km/h (75 mph) 970 hPa (28.64 inHg)

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 Crane, Geoff D. "The Australian tropical cyclone season 1979–80" (PDF). Australian Meteorological Magazine. 29: 41–53. Retrieved May 1, 2016.
  2. ↑ "The Australian Tropical Cyclone Database" (CSV). Australian Bureau of Meteorology. A guide on how to read the database is available here.
  3. 1 2 3 4 5 6 7 MetService (May 22, 2009). "TCWC Wellington Best Track Data 1967–2006". International Best Track Archive for Climate Stewardship.
  4. 1 2 3 Summary of cyclones affecting Fiji 1977 – 1987 (incl) (PDF) (Report). Fiji Meteorological Service. Retrieved March 25, 2014.
  5. ↑ Centre for Research on the Epidemiology of Disasters. "EM-DAT: The OFDA/CRED International Disaster Database". Université catholique de Louvain. Retrieved December 5, 2016.

External links

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