Properties remain under threat as uncontrolled bushfires that have destroyed at least 10 homes and other buildings continue to ravage suburbs in Perth.

Authorities warned on Thursday it could be days before the fires were brought under control after they ripped through semi-rural properties and threatened more homes in up to eight suburbs.

It was too late for people to leave in eight suburbs in the City of Wanneroo and the City of Swan, in Perth’s north-east.

More than 150 firefighters worked through the night to save homes as the massive blaze in the city’s north forced hundreds of families to leave on Wednesday night as embers rained down on their homes.

Residents in the path of the bushfires are monitoring the threat and preparing to leave. Photo: AAP

Teams worked to assess damage to properties so evacuated residents could be informed, with fears more destroyed homes could be found.

More than 1000 people were left without power as critical infrastructure was brought down in unforgiving temperatures that peaked at 40 degrees, with winds of up to 80km/h fanning the flames.

The Department of Education said East Wanneroo Primary School and Wanneroo Secondary College would be closed on Friday.

Emergency Services Minister Stephen Dawson said a huge amount of firefighting resources, including multiple water bombers, were being used to battle the blaze.

“This is a significant fire … this will be a long-running incident and could take some time before the fire is brought under control given the situation we find ourselves in terms of the wind and high temperatures,” he said.

Tweet from @dfes_wa

Several firefighters have suffered smoke inhalation and minor injuries and one crew was involved in a “burnover” incident while in a truck.

After peaking at 39 degrees on Thursday, the forecast is set to ease to 35 degrees on Friday and Saturday before rising to 37 degrees on Sunday.

-AAP