By John Cotter, The Canadian Press

Fort Mcmurray, Alta.: Alberta declared a state of emergency Wednesday as crews frantically held back wind-whipped wildfires that have already torched 1,600 homes and other buildings in Fort McMurray, forcing all 80,000 residents to flee.

“The situation in Fort McMurray is not stable. It is unstable,” Scott Long of Alberta Emergency Management told reporters in a Wednesday afternoon briefing.

“The downtown core is being held through some Herculean efforts of the structural firefighters in the area.”

Municipal Affairs Minister Danielle Larivee said the state of emergency allows the province to take full control of the situation, conscript people if necessary, and bulldoze structures as required.

“We are still in the throes of an intense crisis,” said Larivee.

There were dangerous and dramatic developments on multiple fronts Wednesday in a story that has made headlines worldwide with stunning video footage of trucks and cars driving past sheer walls of flame.

There were haunting images of scorched trucks, charred homes and telephone poles, burned out from the bottom up, hanging in the wires like little wooden crosses.

Alberta Premier Rachel Notley flew up to survey the situation first-hand, while officials in the evacuation centre had to bolt to the south of the city as flames edged closer.

Notley tweeted pictures of the fire from above. “The view from the air is heartbreaking,” she wrote.

The blaze effectively cut Fort McMurray in two late Tuesday, forcing about 10,000 north to the safety of oilsands work camps.

The other 70,000 were sent streaming south in a bumper-to-bumper snake line of cars and trucks that stretched beyond the horizon down Highway 63. Some vehicles sat in ditches, the victims of engine trouble or a lack of gas.

The situation took a tragic twist Wednesday when an SUV collided head on with a tractor-trailer on another southern escape road, Highway 881, killing two and shutting down the road in both directions.

The displaced arrived in communities of Anzac, Lac La Biche and Edmonton. Some were going as far as Calgary.

At Anzac, volunteers served eggs and pancakes to some of the 2,500 people at the recreation centre.

Chantelle Boutin said she was grateful that she and her husband found a safe refuge. The couple brought their two dogs, but one of them died from the stress.

“We lost our house, we lost everything, but we didn’t lose our spirit,”said Boutin.

“Thank you, God, nobody died. Our prayers are with you guys, those firefighters, EMS.”

Crews had been battling the blaze since Sunday.

But the situation turned destructive within minutes on Tuesday afternoon when the blaze, whipped up by winds, roared into the southwest corner of the city.

It engulfed homes in three subdivisions and destroyed vehicles, gas stations and a motel. Most of the homes in the suburbs of Beacon Hill and Waterways were destroyed.

There have been no reports of fire-related injuries or deaths.

The wildfire was still listed out of control as it curled around the city, 435 kilometres northeast of Edmonton, and was expected to reach 10,000 hectares by day’s end.

Robin Smith with the Regional Municipality of Wood Buffalo, which includes the city, said it was believed everyone left the city.

“We have RCMP patrols that are regularly looping the neighbourhoods to make sure there’s no one straggling,” said Smith.

Long said area pipeline operations were shutting or reducing operations, and residents of the nearby Alexis-Nakota First Nation were ready to leave on an hour’s notice if necessary.

Mayor Melissa Blake said her city is strong and remembers Slave Lake, a community devastated by wildfires in 2011.

“We will hope to follow in the shadow of Slave Lake in our perseverance and resolve,” said Blake.

“And as we look to the future, this is still a place of incredible strength, resiliency and vibrancy.”

The province said 255 firefighters were on scene, backed up by 12 helicopters and 17 air tankers. The military has provided rescue helicopters and 15 residents who had been cut off by fire were airlifted to safety, Long said.

Concerns and best wishes poured in from around the world.

From Britain, the Queen said in a statement: “Prince Philip and I were shocked and saddened by the news of the wildfires that are causing such devastation to Fort McMurray.

“Our thoughts and prayers are with all those who have been affected.”

In Ottawa, Prime Minister Justin Trudeau said the federal government will provide all possible assistance to Alberta.