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Cyclone Sina    11 March to 16 March 1980

Cyclone Sina developed into a category on March 11 1980. The cyclone subsequently moved south-eastwards  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, as it passed about 200 km to the southwest of New Caledonia. After the cyclone had peaked, it accelerated south-eastwards while gradually weakened and transitioning into an extratropical cyclone.  

Ex-TC Sina impacted Upper North Island on 15 March with central pressure of 982 hPa over Great Barrier Island. The cylcone continued to deeped reaching 975 hPa over the Gisborne ranges on the 16 March. Brief periods of gales and heavy rain affected Northland, Auckland, Great Barrier Island, Gulf Islands, Coromandel Peninsula and the Waikato with moderate impacts. 

Tropical summary

Name
Category 

Lowest pressure
Lowest land pressure

Mean Wind Speed 
Affected land

 
Sina 
3
970 hPa
994 hPa

120 km/h (G- 150 km/h)
New Caledonia
Ex-TC summary

Name
Category 

Lowest pressure
Lowest land pressure

Mean Wind Speed 
Affected upper NI

 


Sina
1
975 hPa
975 hPa

70 km/h (G- 120 km/h)
Northland, Auckland, Gulf Islands, Great Barrier Island, Coromandel, Waikato
Sina 1980 track.jpg
Sina 1980 MSLP.jpg
Sina 1980 mean wind.jpg
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