Catastrophic Fire Conditions Predicted For Western Australia
Fires would be extremely difficult to control if they spark in parts of regional WA, where the mercury is forecast to climb to about 40C.
Catastrophic fire conditions are forecast on Sunday for the Esperance-Goldfields and eastern Wheatbelt regions.
Extreme conditions are also expected for the Eucla, inland and coastal areas of Ravensthorpe, and west into southern parts of the Wheatbelt. Under that rating, fire would be uncontrollable, unpredictable and fast-moving.
The Bureau of Meteorology says hot air will be moving eastwards throughout the day.
Most of the state's southwest will also face the possibility of thunderstorms, with the risk of fires being sparked by lightning.
The conditions come after emergency warnings were declared and later eased for two fires on Saturday.
A blaze broke out in Cataby, 170km north of Perth, at 2.45pm and was brought under control about 90 minutes later.
An emergency warning was issued for parts of the northern Perth suburb of Gnangara about 12.50pm before the fire was contained and the warning downgraded.
Fire and Emergency Services Commissioner Darren Klemm said the risk posed by high temperatures on the weekend was compounded by the risk of "dry lightning", which could spark blazes, and strong winds.
"Those strong winds are the reasons the fire danger gets elevated because of the challenges we have controlling fires in these conditions," he told reporters on Saturday.
The dry conditions are comparable to 2015 when the Waroona-Yarloop fire ripped through the state's southwest, Klemm said.
Two people were killed and more than 69,000 hectares of land was burnt in the blaze, which continued for 17 days.
Klemm said Saturday was labelled a "significant fire day" because it fell outside the normal bushfire period.
He urged people to discuss their fire plan and not to take the risk lightly, even in metropolitan areas.