1970–71 South Pacific cyclone season

1970–71 South Pacific cyclone season

Season summary map
Seasonal boundaries
First system formed December 15, 1970
Last system dissipated April 19, 1971
Strongest storm
Name Lena
 • Maximum winds 95 km/h (60 mph)
(10-minute sustained)
 • Lowest pressure 980 hPa (mbar)
Seasonal statistics
Total disturbances 6
Tropical cyclones 6
Severe tropical cyclones 0
Total fatalities Unknown
Total damage Unknown
Related articles

Seasonal summary

Systems

Tropical Cyclone Priscilla

Category 1 tropical cyclone (Australian scale)
 
Duration December 15 – December 19
Peak intensity 75 km/h (45 mph) (10-min)  990 hPa (mbar)

During December 15, a small tropical depression developed about 278 km (175 mi) to the north of Yasawa-i-Rara in Fiji's Yasawa Islands.[1] Over the next day, the system drifted westwards, before it started to move southwards and intensify further.[1] The system subsequently became equivalent to a modern-day category 1 tropical cyclone, with 10-minute sustained wind speeds of 75 km/h (45 mph) during December 17.[1][2] During that day, the system passed about 95 km (60 mi) to the west of Nadi and started to move south-eastwards and passed well to the south of Ono-I-Lau during December 18.[1] The system was last noted during the next day, after it had moved below 25S and out of the tropics.[1] It was thought that the system caused gale-force winds in parts of Viti Levu, Vatulele, Kandavu and the Yasawa and Mamanutha group of islands.[1]

Tropical Cyclone Rosie

Category 1 tropical cyclone (Australian scale)
Tropical storm (SSHWS)
 
Duration December 30 – January 6
Peak intensity 85 km/h (50 mph) (10-min)  980 hPa (mbar)

Cyclone Rosie was a weak cyclone which existed in late December 1970 near New Caledonia.

Tropical Cyclone Dora

Category 1 tropical cyclone (Australian scale)
Tropical storm (SSHWS)
 
Duration February 10 – February 17
Peak intensity 80 km/h (50 mph) (10-min)  993 hPa (mbar)

Cyclone Dora formed in the Coral Sea east of Proserpine on February 10, 1971. It took a southeasterly track over the next four days, away from the Queensland coast, turning into a low pressure system well east of the Queensland/New South Wales border. On February 17, the system reintensified into a cyclone east of the Gold Coast, and it crossed the Queensland coast north of Brisbane at Redcliffe. Widespread structural damage was reported, with numerous power lines falling and roofs being uproofed.

Tropical Cyclone Ida

Category 1 tropical cyclone (Australian scale)
Tropical storm (SSHWS)
 
Duration February 15 – February 23
Peak intensity 85 km/h (55 mph) (10-min)  980 hPa (mbar)

Cyclone Ida existed from 16 to 22 February 1971 in the Coral Sea.

Tropical Cyclone Fiona

Category 1 tropical cyclone (Australian scale)
Tropical storm (SSHWS)
 
Duration February 24 – March 1
Peak intensity 70 km/h (45 mph) (10-min)  991 hPa (mbar)

Cyclone Fiona existed from 16 to 28 February 1971. It developed from remains of Cyclone Gertie, which was located in the Gulf of Carpentaria.

Tropical Cyclone Lena

Category 2 tropical cyclone (Australian scale)
Tropical storm (SSHWS)
 
Duration March 13 – March 23
Peak intensity 95 km/h (60 mph) (10-min)  980 hPa (mbar)

Cyclone Lena existed from 13 to 20 March 1971 near New Caledonia.

Other systems

Tropical Depression Nora caused minor damage and gale-force winds in parts of Fiji between October 29–30.[3]

Seasonal effects

Name Dates active Peak classification Sustained
wind speeds		 Pressure Areas affected Damage
(USD)		 Deaths Refs
Nora October 29 – 30 Tropical depression Not Specified Not Specified Fiji Minor [3]
Priscilla December 15 – 19 Category 1 tropical cyclone 75 km/h (45 mph) 990 hPa (29.23 inHg) Fiji Minor [3]
Season aggregates
7 systems October 29 – March 23

See also

References

  1. 1 2 3 4 5 6 Krishna, Ram (January 4, 1981). Publication No. 2: Tropical Cyclones in Fiji: November 1969 – April 1980 (Report). Fiji Meteorological Service.
  2. ↑ MetService (May 22, 2009). "TCWC Wellington Best Track Data 1967–2006". International Best Track Archive for Climate Stewardship.
  3. 1 2 3 Waygood, J.L.M. (October 20, 1980). Tropical Cyclones affecting Fiji: November 1969 to April 1980 (Information Sheet No. 59). Fiji Meteorological Service.
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