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Cyclone Althea originated in an expanding area of thunderstorm activity near the Solomon Islands in mid-December 1971. Although little is known about the storm's genesis because of sparse reports and infrequent weather satellite images, [ 1 ] the disturbance is thought to have organised into a tropical low on 19 December as it tracked slowly ...
Tropical Cyclone Althea was a Category 4 cyclone when it hit the coast some 50 km north of Magnetic Island and Townsville in North Queensland on December 24, 1971. [1] Althea produced peak gust wind speeds between 123 and 145 miles per hour (197 and 233 km/h). Three people died and property damage was estimated at A$115 million loss (1990 value).
Name Duration Peak intensity Areas affected Damage (Deaths Refs Wind speed Pressure Flora: 1 – 5 December 1964: 140 km/h (85 mph) 965 hPa (28.50 inHg)
The 1971–72 South Pacific cyclone season, unlike the previous two, was an average season, featuring eleven tropical disturbances, eleven tropical cyclones, and six severe tropical cyclones. The season began only four days after the official start, November 1, and ended very late, on June 5, more than a month after the official end of the ...
Tropical cyclones are non-frontal, low-pressure systems that develop, within an environment of warm sea surface temperatures and little vertical wind shear aloft. [1] Within the Australian region, names are assigned from three pre-determined lists, to such systems, once they reach or exceed ten–minute sustained wind speeds of 65 km/h (40 mph), near the center, by either the Australian Bureau ...
The tropical cyclone seasons that occur in the Southern Hemisphere are: South-West Indian Ocean tropical cyclone. Current – 2024–25 South-West Indian Ocean cyclone season; Australian region tropical cyclone. Current – 2024–25 Australian region cyclone season; South Pacific tropical cyclone. Current – 2024–25 South Pacific cyclone season
On Christmas Eve 1971, Tropical Cyclone Althea, a category 4 cyclone, battered the city and Magnetic Island, causing considerable damage. [ 52 ] In 1973, Indigenous activists Eddie and Bonita Mabo established the Black Community School in Townsville, where children could learn their Indigenous culture rather than white culture. [ 53 ]
Collectively, tropical cyclones caused more than US$1.2 trillion in damage, unadjusted for inflation, and have killed more than 2.6 million people. Most of these deaths were caused by a few deadly cyclones, including the 1737 Calcutta cyclone , the 1839 Coringa cyclone , the 1931 Shanghai typhoon , the 1970 Bhola cyclone , Typhoon Nina in 1975 ...