Impact of Tropical Cyclone Fina causing temperatures to nudge towards 50 degrees

While the immediate impact of Tropical Cyclone Fina is over, its impact on weather conditions for southern Australia will be felt this week, forecasters say.

The fierce storm that lashed Darwin over the weekend generated a huge hot air mass, which is gradually moving into the south-east of the country, reports Weatherzone.

Its impact will cause a late spring mini heatwave in multiple states today, with the mercury climbing to a maximum 47 degrees in south-west Queensland and 46 degrees in parts of South Australia.

READ MORE: Cyclone Fina cuts power, fells trees across Northern Territory

Queensland officials have put out an extreme heat warning for the Peninsula, Gulf Country, Northern Goldfields and Upper Flinders, North Tropical Coast and Tablelands, Herbert and Lower Burdekin, Central Coast and Whitsundays and North West districts.

Residents in SA's Eastern Eyre Peninsula, Flinders and Mid North regions are being warned to expect extreme fire danger today.

Warm temperatures will also extend to north-west NSW and parts of the Northern Territory, where maximums in the low forties are forecast.

NSW authorities have issued a severe heatwave warning for the Northern Rivers, Mid North Coast, Northern Tablelands and Upper Western districts lasting until Wednesday.

In the Northern Territory there is a severe heatwave warning today and tomorrow for Barkly, Simpson, Lasseter and Tanami.

The origin of the heat burst is over the Timor Sea, off Darwin, where Fina sucked in huge amounts of heat from the water and propelled it into the upper atmosphere.

By today, this air has reached southern states powered by a high pressure system.

Meteorologists say much of the moisture has been lost, but air will gradually become hotter as it descends to central Australia, a process they call adiabatic warming.

While these conditions are not unusual for late spring, they may nudge seasonal heat records.