UPDATE: A WATCH and act alert has been issued for a bushfire in Tasmania's southwest, as firefighters brace for winds of up to 60km/h.

The alert was issued at 11am (AEDT) today for the uncontained 24,040-hectare blaze at Forcett, where the fire danger rating is high.

Tasmanian Fire Service senior station officer Phil Douglas said while there was no immediate threat to communities, local residents needed to be vigilant.

He said strengthening winds between 30km/h and 60km/h were expected to sweep through the area after 2pm.

"We have got crews on the ground looking for any new activity that might spark up," Mr Douglas said.

He said firefighters were also concerned about the impact of the winds on the uncontained blaze at Lake Repulse.

But while the fire danger rating there was also high, the alert level still remained at advice.

Mr Douglas said residents who began returning to their homes on the Tasman Peninsula on Friday needed to be wary of burnt trees that could fall due to the windy conditions.

Meanwhile, the state's bushfire season is still weeks away from its most dangerous period, authorities have warned.

TFS chief officer Mike Brown said historical records show the island state's bushfire peak is in February.

"One thing that I'm quite fearful of is that we are only very early into our fire season," he said.