An out-of-control bushfire burning in Perth’s northeastern suburbs has levelled 56 homes, with authorities checking if lives have been lost in one badly hit area.

The massive blaze with an 80km perimeter raged through the night near the hills town of Wooroloo before moving west onto the city’s coastal plain where it is threatening homes in northern suburbs.

Weather conditions are expected to worsen overnight with wind gusts of up to 75km/h possible, with a smoke alert issued for the entire Perth metropolitan area.

Credit: Department of Fire and Emergency Services WA

Western Australia’s Fire and Emergency Services Commissioner Darren Klemm says it’s likely the number of homes lost will climb.

“Fifty-six homes have been lost. It is terrible news for the owners of those homes, and our thoughts are with them all,” he told reporters late on Tuesday.

He said crews had faced “a difficult and incredibly fast-moving” blaze that was spotting 3.5km ahead of the fire front at its height last night.

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“Firefighters were just going from one house to the next trying to save them,” he said.

“We are still in really difficult conditions. There is a lot of work to be done on the fire to make it safe and we are a long way from that point.”

Credit: Department of Fire and Emergency Services WA

Earlier, Premier Mark McGowan said firefighters would continue to check destroyed homes in the rural suburb of Tilden Park to check if any lives had been lost.

He said a large aerial tanker was en route from NSW to help battle the blaze and the prime minister had been briefed on the situation.

“This is an extremely dangerous fire and a serious situation. Weather conditions are extremely volatile,” the premier said.

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“Please do everything you can to keep you and your family safe and look after each other.”

Credit: Department of Fire and Emergency Services WA

Meanwhile, people in Perth’s CBD and coastal suburbs have reported ash landing at their homes, up to 35km from the blaze.

Operations at RAAF Base Pearce – which is in the path of the fire – have been suspended and preparations are being made to evacuate.

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DFES Deputy Commissioner Craig Waters said the fire had doubled in size overnight and burned through 7366 hectares.

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“Strong winds are hampering us getting in and containing the fire and bringing it under control,” he said.

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Six firefighters have received minor injuries.

People in a 25km stretch west from Wooroloo to the Walyunga National Park northeast of Perth have been told it is too late to leave.

“You must shelter before the fire arrives, as the extreme heat will kill you well before the flames reach you,” the latest DFES warning said.

Jenni Stanton, 59, received a text about 2am telling her to evacuate from her home at The Vines, about a kilometre from the blaze.

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But she and her husband decided to stay put, saying the roads out of the semi-rural suburb were bumper-to-bumper with traffic.

“The fire has jumped the Great Northern Highway west of Walyunga, so it’s closer to us now,” she told AAP mid-morning.

“The yard is covered in ash and we can hear the water bombers.”

Neighbour Melissa Stahl, 49, received the same text.

“I could smell the fire and went out the back and the whole yard was filled with smoke,” she said.

“My husband Michael said we better go.

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“We grabbed bedding, photos, the two kids and the dog and got out of there.”

Residents in the surrounding areas, including Parkerville, Ellenbrook, Chidlow and Jane Brook, have been told to leave if they are not prepared to fight the blaze.

Evacuation centres have been set up at the Brown Park Recreation Complex in Swan View and Swan Active in Midland.

AAP

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