Cooler weather has helped Tasmanian firefighters get the upper hand in a series of bushfires in the state's south, but a fresh burst of unseasonal spring heat looms this week.
Tasmania Fire Service acting deputy regional chief, Mark Klop, says a total fire ban may be declared on Tuesday as heat and high winds threaten to again flare fires, including those of most concern around Orford, Osterley and Glenfern.
Mr Klop said a cooler, weaker southerly airflow allowed fire-bombing aircraft to re-enter the battle and helped TFS and parks and wildlife ground crews to bolster containment lines.
"We're going to have very high temperatures in the southern region tomorrow, with severe fire conditions through to extreme fire conditions on Tuesday," he said in Cambridge on Sunday.
"We will have temperatures in the low 30s and very high fire danger ratings on Tuesday, and similar wind conditions to yesterday."
Winds gusted up to 100km/h on Saturday, grounding firefighting helicopters and causing smoke and ash to billow.
A decision will be made on Monday on whether there will be a total fire ban on Tuesday.
Mr Klop urged landowners not to begin any new burn-offs until Wednesday, and to carefully monitor any existing burn-offs. He urged them to ensure everything, including stumps and logs, was extinguished.
"We have had some very dry conditions in the south, leading to the ground being very dry and fires will burn underground," he said.
The fires pose no threat at this stage but may begin to affect communities if they flare, Mr Klop said.
A firefighting task force from Tasmania's northwest may be called to assist crews in the south until Wednesday.
TFS is urging communities to listen to local ABC radio and regularly check the TFS website for the latest conditions.
