Records tumble in November heatwave, bureau says
Eighteen weather stations in southeastern Australia recorded their hottest November days on record last week as the country sweltered through one of its most significant spring heatwaves.
The Bureau of Meteorology (BoM) on Tuesday issued a special climate statement saying the event started with a build-up of extreme heat in central Australia over the weekend of November 24 and 25.
The very hot air mass was drawn to the southeast with the heatwave reaching peak intensity on Thursday, November 29.
Extreme heat covered much of Victoria, inland NSW and northern and eastern South Australia, while the abnormally hot weather also spread to Tasmania.
"Eighteen long-term stations in Victoria, NSW and South Australia had their hottest November days on record," the BoM statement said.
"Overall, it was the hottest November day on record over 33.8 per cent of Victoria, 10.4 per cent of NSW and 1.2 per cent of South Australia."
Records were broken by as much as 1.8C at Balranald in NSW and Ouyen in Victoria.
It reached 45.8C at Ouyen, the state's highest spring temperature on record - easily surpassing the previous record of 44.5C set at Mildura in 1980.
The highest temperature of the heatwave was 46.2C in Pooncarie in NSW.
Record-high minimum temperatures were also recorded near the NSW-Victorian border on the night of November 29-30 as cloud increased ahead of an approaching trough.
"Most notably Rutherglen's minimum temperature of 25.7C was 2.8C higher than any other November value in 94 years of observations," the BoM statement said.
The warm overnight conditions were accompanied by high humidity in some places, with Melbourne recording its highest November dew point on record at 6am.