'As Bad As It Gets': South Australia Braces For Catastrophic Fire Conditions

More than 100 schools will be closed in South Australia on Wednesday, as much of the state braces for catastrophic fire danger conditions.

The Bureau of Meteorology has forecast a maximum 42C for Adelaide, while the mercury is expected to reach 45C at Murray Bridge, 44C at Renmark, Port Augusta, Port Lincoln and Whyalla, and 43C at Port Pirie.

The hot temperatures will be accompanied by strong winds and possible dust haze.

Seven districts have been catastrophic fire danger zones -- including the Mount Lofty Ranges and Mid North near Adelaide -- while two were rated "extreme" and six "severe".

More than 100 SA schools will close on Wednesday to prepare for the fire risk. Image: Supplied

CFS assistant chief officer Brenton Eden said emergency services would spend the day on high alert.

"We don't take seven catastrophic fire danger warnings lightly -- that is as bad as it gets," he said.

"That means when a fire starts it's not possible for us to control it, so it places the community at great risk."

The CFS has 11 fixed wing aircraft available for firefighting, including one from New South Wales, but windy conditions may prevent them from flying.

More than 100 schools in areas of catastrophic fire danger will remain closed, as well as affected national parks and reserves.



More Than 100 South Australian Schools To Close On Wednesday As State Braces For 'Catastrophic' Fire Risk

More than 100 primary and high schools will be closed in South Australia on Wednesday as authorities prepare for catastrophic fire dangers with temperatures set to soar into the 40s.

The Bureau of Meteorology said several November heat records could fall, including Adelaide's hottest November day of 42.7C set in 1962.

SES chief of staff Graeme Wynwood advised the public to take simple steps for health protection during the hot weather.

"Make sure you are drinking plenty of water (on Wednesday) and keeping cool by avoiding going out in the heat of the day," he said.

A total fire ban will be in place across the state.