An out-of-control wilderness bushfire in Tasmania's southwest is still burning hours after it first threatened several tiny townships.
The Gell River fire, west of the Tasmanian capital, has burnt through almost 15,000 hectares of bush but no longer poses an immediate risk to residents, the fire services states.
A warning for Maydena, Tyenna, Mt Field, National Park, Bushy Park, Ellendale, Westerway and Fentonbury was downgraded to an advice warning on Friday evening.
But residents are warned embers from the blaze, burning about 20km northwest of the communities, could fall and to enact their bushfire survival plans.
"We are not out of the woods. There is a significant fire risk," Tasmania Fire Service chief officer Chris Arnol told reporters on Friday.
"If we get in, these fires will still be difficult to fight in the conditions that we are confronting at the moment.
"The day is not over and neither is our fire season - we've got another two months to go and this could be a prelude to a much busier time."
Two fires accidentally started from a lawn mower and powerlines arcing out during the day.
Hobart hit 34 degrees on Friday but dropped to 24C in the afternoon, while Campania peaked at 40C before a cool change moved up the state's east coast.
"The cool change arrived probably an hour earlier than we were expecting in Hobart," Bureau of Meteorology senior forecaster Luke Johnston said.
"It'll be quite a dry fresh, westerly airstream for the next few days."
John Youd, who owns Tyenna River Cottage, told AAP the sky above Tyenna was "red and angry" in the afternoon but there was some blue poking through.
Around 400 campers left Mount Field National Park after it was closed.
Smoke from the fire reached Hobart and turned skies an apocalyptic red before spreading out over the city.
A total fire ban is in place for the eastern half of Tasmania for all of Friday, with the southeast, midlands and Upper Derwent Valley rated an extreme fire risk.
Popular national park tracks at Freycinet and Maria Island have been closed due to the extreme heat.
Friday marks the sixth anniversary of Tasmania's Dunalley bushfires that destroyed hundreds of homes in the state's southeast.
Australian Associated Press
