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1979–80 Australian region cyclone season
The 1979–80 Australian region cyclone season was an above average tropical cyclone season. The season featured 15 total cyclones, with 9 of them attaining severe tropical cyclone status. The strongest of these was Cyclone Amy, which ended up making landfall in the north-western portion of Western Australia.
On 26 August, TCWC Perth reported that a tropical low had developed on a shear line about 1300 km (810 mi) to the northwest of Cocos Island. Over the next couple of days the depression gradually developed further before at 1800 UTC on 27 August, TCWC Perth estimated that it had become a tropical cyclone and named it Tony. During the next couple of days, the system moved towards the west-southwest before on 29 August it reached its peak intensity of 95 km/h (60 mph) and a peak pressure of 990 hPa (29.23 inHg) as it approached the edge of TCWC Perth's area of responsibility. During the next day, Tony moved into the South West Indian Ocean and weakened gradually before it dissipated during 31 August. Neither the Mauritius or Reunion meteorological services monitored Tony as a tropical cyclone while it was active, while it was not included in the JTWC's analysis of the season.
The disturbance from which Viola developed formed on 7 December about 600 km (375 mi) northwest of Cocos. A tropical depression developed on 9 December, moved slowly southwestward, and strengthened into Cyclone Viola two days later. It then moved westward under the influence of an easterly middle level flow north of the sub-tropical ridge, and attained its maximum intensity on 16 December 1979, with a maximum mean wind speed of about 205 km/h (125 mph) and an estimated central pressure of 930 mbar (27.46 inHg). Early on 18 December, Viola crossed 90º E and was renamed Claudette.
The depressional phase of Wilf began about 300 km of the Cocos Island on 23 December 1979. Estimated from satellite pictures, Wilf was recorded as a tropical cyclone early Christmas Day. Wilf began a period of rapid intensification and reached its peak on 28 December. Wilf began to weaken as shear from the northwest began to tear the storm apart. While its convection did weaken a lot, it was still able to maintain tropical cyclone status. The storm crossed into the Southwest Indian Ocean on the first day of 1980, being renamed to Danitza.
On 2 January, the BoM reported that a tropical depression had developed in the Southwest Gulf of Carpentaria. During that day the depression moved towards the southwest and developed early signs of having a cyclonic circulation, however before it could intensify into a tropical cyclone, the system made landfall near the Northern Territory border with Queensland at 135°E. Over the next couple of days the depression weakened slightly, as it moved in a general east-southeast direction across the Carpentaria and Central Coast districts of Queensland. On 7 January, the depression moved out into the Coral Sea just to the south of Sarina with a central pressure of 995 hPa. During that day the depression developed gale-force windspeeds and was named as Paul by TCWC Brisbane. Before later that day, Paul reached its peak intensity as a tropical cyclone with 10-minute sustained windspeeds of 75 km/h (45 mph) and its lowest central pressure of 989 hPa as it moved rapidly towards the southeast. This southeastern movement continued until 1200 UTC on 8 January when it slowed down and started to move to the southwest as it developed a cold core and became extratropical. The extratropical remnants of Paul subsequently lingered in the Australian region and peaked with stronger windspeeds than when it was a tropical cyclone. The US Navy's analysis of this system shows that they would have considered Paul a tropical storm with peak 1-minute sustained windspeeds of 110 km/h (70 mph). As a tropical depression, Paul forced a strong area of convergence in the moist airstream onto the tropical Queensland coast. As a result of the moisture, very heavy rain caused one of the highest floods of the 20th Century down the Don River through Bowen. In its lower reaches the river changed its course and washed away two homes and caused several million Australian dollars' worth of damage to the market garden industry.
What would form into Amy began on 3 January 1980 as a collection of clouds located over the Timor Sea, and would drift west-southwest as it reached tropical cyclone status on 5 January. Amy sped towards the south on the 7th, towards Port Hedland. As it approached landfall, it continued to switch direction. Amy made landfall the morning of 10 January about 110km east of Port Headland. Amy passed close to the town of Goldsworthy and caused extensive damage. In total, Amy caused around $25 million dollars in damages. No injuries or deaths were reported.
Brian began as a depression located east of Bathurst Island on 18 January 1980. The system moved west-southwest as it began to rapidly intensify late 19 January. Winds of 110 km/h (70 mph) were recorded 50 km from the eye. Continuing to intensify, Brian reached its peak intensity on 23 January of 185 km/h (115 mph). Brian began to move southwest before dissipating on 27 January.
Clara began as a tropical depression located about 1000 km west-northwest of Cocos Island. Clara moved southwest before being named late on 21 January. However, Clara was located close to Cyclone Brian and rapidly weaken due to shear from Brian. Clara regained tropical cyclone status on 24 January with peak intensity occurring 2 days later on 26 January. Strong winds traveling northwest in the troposphere ripped Clara up, causing her to dissipate on 29 January.
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1979–80 Australian region cyclone season AI simulator
(@1979–80 Australian region cyclone season_simulator)
1979–80 Australian region cyclone season
The 1979–80 Australian region cyclone season was an above average tropical cyclone season. The season featured 15 total cyclones, with 9 of them attaining severe tropical cyclone status. The strongest of these was Cyclone Amy, which ended up making landfall in the north-western portion of Western Australia.
On 26 August, TCWC Perth reported that a tropical low had developed on a shear line about 1300 km (810 mi) to the northwest of Cocos Island. Over the next couple of days the depression gradually developed further before at 1800 UTC on 27 August, TCWC Perth estimated that it had become a tropical cyclone and named it Tony. During the next couple of days, the system moved towards the west-southwest before on 29 August it reached its peak intensity of 95 km/h (60 mph) and a peak pressure of 990 hPa (29.23 inHg) as it approached the edge of TCWC Perth's area of responsibility. During the next day, Tony moved into the South West Indian Ocean and weakened gradually before it dissipated during 31 August. Neither the Mauritius or Reunion meteorological services monitored Tony as a tropical cyclone while it was active, while it was not included in the JTWC's analysis of the season.
The disturbance from which Viola developed formed on 7 December about 600 km (375 mi) northwest of Cocos. A tropical depression developed on 9 December, moved slowly southwestward, and strengthened into Cyclone Viola two days later. It then moved westward under the influence of an easterly middle level flow north of the sub-tropical ridge, and attained its maximum intensity on 16 December 1979, with a maximum mean wind speed of about 205 km/h (125 mph) and an estimated central pressure of 930 mbar (27.46 inHg). Early on 18 December, Viola crossed 90º E and was renamed Claudette.
The depressional phase of Wilf began about 300 km of the Cocos Island on 23 December 1979. Estimated from satellite pictures, Wilf was recorded as a tropical cyclone early Christmas Day. Wilf began a period of rapid intensification and reached its peak on 28 December. Wilf began to weaken as shear from the northwest began to tear the storm apart. While its convection did weaken a lot, it was still able to maintain tropical cyclone status. The storm crossed into the Southwest Indian Ocean on the first day of 1980, being renamed to Danitza.
On 2 January, the BoM reported that a tropical depression had developed in the Southwest Gulf of Carpentaria. During that day the depression moved towards the southwest and developed early signs of having a cyclonic circulation, however before it could intensify into a tropical cyclone, the system made landfall near the Northern Territory border with Queensland at 135°E. Over the next couple of days the depression weakened slightly, as it moved in a general east-southeast direction across the Carpentaria and Central Coast districts of Queensland. On 7 January, the depression moved out into the Coral Sea just to the south of Sarina with a central pressure of 995 hPa. During that day the depression developed gale-force windspeeds and was named as Paul by TCWC Brisbane. Before later that day, Paul reached its peak intensity as a tropical cyclone with 10-minute sustained windspeeds of 75 km/h (45 mph) and its lowest central pressure of 989 hPa as it moved rapidly towards the southeast. This southeastern movement continued until 1200 UTC on 8 January when it slowed down and started to move to the southwest as it developed a cold core and became extratropical. The extratropical remnants of Paul subsequently lingered in the Australian region and peaked with stronger windspeeds than when it was a tropical cyclone. The US Navy's analysis of this system shows that they would have considered Paul a tropical storm with peak 1-minute sustained windspeeds of 110 km/h (70 mph). As a tropical depression, Paul forced a strong area of convergence in the moist airstream onto the tropical Queensland coast. As a result of the moisture, very heavy rain caused one of the highest floods of the 20th Century down the Don River through Bowen. In its lower reaches the river changed its course and washed away two homes and caused several million Australian dollars' worth of damage to the market garden industry.
What would form into Amy began on 3 January 1980 as a collection of clouds located over the Timor Sea, and would drift west-southwest as it reached tropical cyclone status on 5 January. Amy sped towards the south on the 7th, towards Port Hedland. As it approached landfall, it continued to switch direction. Amy made landfall the morning of 10 January about 110km east of Port Headland. Amy passed close to the town of Goldsworthy and caused extensive damage. In total, Amy caused around $25 million dollars in damages. No injuries or deaths were reported.
Brian began as a depression located east of Bathurst Island on 18 January 1980. The system moved west-southwest as it began to rapidly intensify late 19 January. Winds of 110 km/h (70 mph) were recorded 50 km from the eye. Continuing to intensify, Brian reached its peak intensity on 23 January of 185 km/h (115 mph). Brian began to move southwest before dissipating on 27 January.
Clara began as a tropical depression located about 1000 km west-northwest of Cocos Island. Clara moved southwest before being named late on 21 January. However, Clara was located close to Cyclone Brian and rapidly weaken due to shear from Brian. Clara regained tropical cyclone status on 24 January with peak intensity occurring 2 days later on 26 January. Strong winds traveling northwest in the troposphere ripped Clara up, causing her to dissipate on 29 January.