Australian Fire crews continue to WA battle blazes

[Loretta]

Fire crews were set to battle bushfires on a number of fronts across Western Australia overnight.

Fire fighters spent Friday fighting at least a half a dozen serious outbreaks across the state with many residents either prepared to leave their houses or defend them.

The Fire and Emergency Services Authority (FESA) was called to Kings Park, just west of the Perth CBD, about 6.30am (WDT).

A deliberately lit fire crept towards luxury apartments in Perth's upmarket suburb of Crawley, which Deputy Opposition leader Julie Bishop calls home.

FESA managed to contain the fire late on Friday morning after it burnt more than 20 hectares of the 400 hectare park.

But by mid-afternoon a wind change fanned the flames again.

The revitalised fire caused the evacuation of the landmark Old Swan Brewery on the banks of the Swan River as flames could be seen by city workers from their offices.

Tourists watched as helicopters and planes worked constantly to contain the fire and questioned how anyone could deliberately set fire to one of Perth's premier tourist destinations.

FESA spokesman Allen Gale said the fire flared up again about 2pm (WDT) after jumping containment lines.

"We are expecting this to happen throughout the day because of the hot conditions and the unpredictable winds," Mr Gale said.

More than 50 fire fighters battled the blaze bound for the brewery.

"And this is all because some idiot decided to start a fire..." Mr Gale said.

Helicopters and planes were used to dump water on the fire as temperatures topped 40C.

North of Perth, fire crews were battling a bushfire that swept from the coastal town of Two Rocks, crossing a major road and starting the Pinjar pine plantation on fire.

An estimated 5,000 hectares of bushland were burnt in the fire which damaged bushland, power poles and powerlines.

In the state's south-west, residents to the west of Bridgetown had been warned to prepare for a bushfire in the area between The Peninsula and Highland Estate.

Residents not prepared for the fire had been warned to leave.

Power was cut to the nearby town of Nannup after a request from FESA.

Power provider Western Power said 918 customers 10km west of the Bridgetown were without power, as was the township of Nannup.

"Approximately 30 to 35 poles have been damaged by the bushfire and will need to be replaced," a Western Power spokeswoman said.

Power was restored to all but 150 people by Friday evening but some outer lying areas may face lengthy delays before their power was restored.

Temperatures were expected to dip to 33C on Saturday in Perth.