Fire conditions over the next two days could be as bad as any day Tasmania has experienced this summer, according to the state's chief fire officer.

Key points: High to severe fire danger is expected for the east and south of the state through to Tuesday, with temperatures forecast in the high 30s

High to severe fire danger is expected for the east and south of the state through to Tuesday, with temperatures forecast in the high 30s A total fire ban is in place for much of the state's south including the Huon Valley and Hobart over weekend

A total fire ban is in place for much of the state's south including the Huon Valley and Hobart over weekend 30 fires are still burning and people have been urged not to be complacent

Chris Arnol said there would be high to severe fire danger for the east and south of the state.

"The fire conditions that we're expecting this weekend are as bad as any we've experienced this summer and the existing fire in the landscape probably exacerbates that for us," he said.

The weather bureau is warning parts of the state could see record-breaking March temperatures in the high 30s on Friday and Saturday.

Duty forecaster David Mathews said some areas were expected to reach 37 degrees Celsius on Saturday, causing the fire danger to be rated as "severe".

"Most areas, particularly in the south-east, will have elevated fire danger," he said.

A total fire ban has been issued for much of the state's south including the Central Highlands, the Huon Valley and Hobart between 2:00am on Friday and 2:00am on Sunday.

Mr Arnol said complacency was not an option.

"I get a strong sense that people that are living close to the fires or the fires that we've currently got or had are assuming that they're all out and that the higher fire dangers have passed," he said.

He said a number of fires were still burning.

"We're still dealing with 30 fires: six are going , one is being controlled, one is contained and 22 are in patrol."

Mr Arnol said there were 120 firefighters actively working on fires on the ground.

"We've got three large fires, perhaps the priority fire for us is the Riveaux Road fire, which is the urban interface fire in the Huon Valley," he said.

"If the fire is pushed on [by] a hot northerly [wind] it could move into populated areas, that's what I am concerned about."

He said the remote Gell River fire still posed the risk of an ember attack on the Maydena community in the Upper Derwent Valley.

"The other fire of concern is that large one in the Central Plateau but we're bringing that to a close," he said.

Smoke and flames caused evacuations from the state's Central Plateau in January. ( Supplied: Claude Road Bushfire Brigade )

Early call for extra help

The TFS wasted no time in calling for more New South Wales and ACT firefighters to be flown in, bringing their total number deployed in Tasmania to 556 since January.

TFS said if any new fires started over the next two days they would be hit quickly.

"We've still got eight aircraft at the moment working on the three main fires. We've requested two additional aircraft come from Victoria to assist with the weekend," state fire controller Shane Batt said.

"We'll probably have in excess of 60 extra firefighters just strategically deployed for any new starts that may occur."

The TFS plans to use explosives today to fell burnt trees affected by the Riveaux Road bushfire in the Leithbridge Hill and Arve Road areas in the Huon Valley.

Experts have warned it would be too dangerous to cut the trees down.

Areas of planned explosions have been closed to the public.

Bushfire smoke blanketed the south in January. ( Facebook: Jimmy Emms )

The Parks and Wildlife Service (PWS) will close some tracks and reserves from Friday through to Sunday.

"The alpine area of Mount Field will be closed as will the Lake Dobson Road, the southern end of Maria Island National Park will be closed, Freycinet National Park will have some track closures but we're still finalising those," PWS's Paul Black said.

Mr Black noted that three fires had been deliberately lit this week, at Corinna in the north-west, Brushy Lagoon in the north and Pelham Tiers in the south, and urged anyone with information to contact police.

TFS said rain was desperately needed to put out some of the fires burning remotely because the fires could burn underground for months.