About possibility of extreme storms in southeastern Australia has informed Accuweather.
Powerful cold front hits mainly coast of South Australia, Victoria, south of New South Wales and finally Tasmania.
Before a cold front temperature anomalies in 850 hPa above +10°C will bring hot weather on Friday, 4. December, but after cold front Sunday, anomalies drop below -10°C.
That means drop of temperatures of 15 - 20°C regionally.
Severe storms should be accompanied by heavy rainfall, flash floods, strong lighting and wind gusts up to 130 km/h.
Until 20. December 2020, severe storms in northern and eastern coast are expected, in the north with accumulative rainfall totals (16 days) above 1 000 mm. From storms in Southeast should drop regionally more than 100 mm of rain for very short time.
Information about Summer 2020/2021 forecast for Australia, New Zealand and Oceania you will find here /https://mkweather.com/2020/12/02/summer-2020-2021-forecast-for-australia-new-zealand-and-oceania/; https://mkweather.com/2020/11/14/forecast-for-world-winter-2020-21-and-summer-2021-according-to-enso-predictions-strong-la-nina-winter-neutral-summer/; https://mkweather.com/2020/10/12/powerful-cyclone-season-in-australia-is-expected-9-15-cyclones-is-forecasted//.