Ontario is requesting assistance from the federal government to get ready to evacuate communities across the north by aircraft as dozens of forest fires burn out of control.

Ontario Emergency Preparedness Minister Jill Dunlop says in a letter to federal Emergency Management Minister Eleanor Olszewski that 15 communities in the north have already started evacuations or are considering them.

She says the situation may continue to escalate rapidly.

Dunlop says it is likely there will be simultaneous evacuations that need to be done by air, with several communities in the north not accessible by road and Ontario may not have enough resources to meet that need.

Ontario is asking the federal government to ensure aircraft and crews could be deployed in 24 hours or less in case the province needs assistance.

WATCH | CN train passes through flames as wildfires sweep across north Ontario:

CN train crew surrounded by flames as wildfires sweep northern Ontario

A CN crew captured dramatic video of wildfire flames nearly engulfing their train in northern Ontario, where at least 150 wildfires have destroyed homes, forced evacuations and unleashed smoke thick enough to make Toronto’s air quality among the worst in the world.

Prime Minister Mark Carney, speaking in London, Ont., opened his remarks Thursday by acknowledging those whose lives are being upended by the fires. Carney thanked firefighters, first responders as well as local leaders for their efforts.

He vowed the federal government would “stand ready” to help in both Ontario and Manitoba, which has been dealing with flooding.

“Canadians always look after each other,” he said.

Carney said his government is in close communication with provinces and municipalities and will provide additional assistance as needed. 

Premier Doug Ford has said crews and aircraft are hard at work fighting more than 180 wildfires across northern Ontario, and the province will spare no expense in keeping people safe.

Winds out of the northwest could fan the flames of dozens of forest fires that have already devastated communities, including one fast-moving blaze that damaged and destroyed homes and buildings on Namaygoosisagagun First Nation, also known as Collins First Nation, north of Thunder Bay. Environment Canada says the community of Armstrong can expect widespread smoke with wind gusts of up to 40 kilometres per hour for most of today.

The fires have prompted evacuation orders for several communities, including Armstrong, Lac La Croix First Nation, Whitesand First Nation, Gull Bay First Nation and Lac des Mille Lacs First Nation.

Ontario forest fire officials say there are 136 active fires in the northwest region, with 63 out of control and there are 44 active fires in the northeast region, with nine out of control.