With more dangerous fire conditions expected on Friday, there were fears the fires could impact on the Flinders Chase National Park.
A “watch and act” message remained in place and residents were urged to leave the area if they were not confident of defending their properties.
A “watch and act” warning was also in place for a grass fire burning at Second Valley, south of Adelaide.
The fire was uncontrolled and travelling in a northerly direction on Tuesday.
In the Adelaide Hills, an “advice” message remained in place for a fire that burnt through 25,000 hectares since it was sparked amid catastrophic conditions 10 days ago.
Warning levels for a string of other fires burning across the state were all reduced to “advice” messages, including a blaze at Miltalie, on the Eyre Peninsula, and one at Keilira, in the south-east.
More than 120 fires were sparked across the state on Monday, prompting the CFS to send more than 600 volunteers and 150 fire trucks into the field.
Meanwhile, structures have been destroyed by fires in Tasmania but authorities said on Tuesday it was too early to know if homes were among them.
Two blazes reached emergency warning level in scorching weather on Monday afternoon, one at Pelham in the state’s south, about 50 kilometres north of Hobart, the other at Fingal, in the north-east.
The fires were at “watch and act” alert level at lunchtime on Tuesday.
“Seventy per cent of the fire ground [at Pelham] has been assessed. We’ve got some structural losses,” Tasmania Fire Service Chief Officer Chris Arnol said.
“We’re not sure if any homes have been lost. It could be sheds it could be homes, we don’t know.
“Access is difficult with that fire, with smoke conditions and some power infrastructure down.”
Mr Arnol said a “significant” number of structures had been saved.
At Fingal, 20 to 30 homes were protected successfully.
Dry lightning sparked both fires, with the Bureau of Meteorology recording more than 400 ground strikes as thunderstorms crossed the state.
The storms brought some rain but not enough to have any impact on the fires.