Lives and homes are under threat in the Adelaide Hills region as emergency level bushfires rages out-of-control.
Emergency warnings have been issued for Cherry Gardens south of Adelaide and Finiss.
Earlier watch and act alerts have been expanded for a growing number of Adelaide Hills communities that are more densely populated such as Sterling, Aldgate, and Bridgewater.
Hundreds of people have been told by the Country Fire Service it is too late to leave.
“You are now in danger. Take shelter in a solid building. Do not leave or enter this area in a vehicle or on foot. It is too late to leave as the roads will not be safe,” the CFS message reads.
Fire crews are struggling to contain the out-of-control blaze, with conditions so bad they admit they cannot stop the fire’s spread.
The scrub fire is burning in an East North Easterly direction towards Scott Creek Conservation Park.
A watch and act message was issued for Tilley Swamp on the Princes Highway.
“Take action now as this bushfire may threaten your safety. If you are not prepared, leave now and if the path is clear, go to a safer place,” the message reads.
“Do not enter this area as conditions are dangerous.”
More than 200 members of the CFS have been working on the ground to battle the blaze, as well as firebombers in the air.
South Australian police are investigating the potential cause of the blaze.
A heatwave has swept through NSW, Victoria, ACT and South Australia over the Australia Day long weekend. (BoM)
The fires come as much of SA spent the day in hot and dry conditions with Adelaide reaching 42 degrees around midday.
Police are also investigating a fire that took place near Gumeracha in the Adelaide Hills which is being treated as suspicious.
A camping stove was found near the ignition point.
CFS crews quickly managed to get the blaze under control this morning.
A total fire ban is in place for the weekend for the Mount Lofty Ranges, Yorke Peninsula, Lower Eyre Peninsula, Eastern Eyre Peninsula and the Mid North.
A fire near Gumeracha is being treated as suspicious by police. (Nine)
In stark contrast a flood warning has been issued for parts of the state as a tropical system moves across from Western Australia tomorrow.
The Bureau of Meteology said the south east of the North West Pastoral District, Flinders Ranges, Mid North and north east of the Eyre Peninsula could be hit by flash flooding.
Adelaide is forecast to reach a top of 32C tomorrow with rain and thunderstorms likely from the late morning.
