Maps show Canada wildfire smoke forecast for U.S. as dozens of blazes burn out of control [Video]

Wildfire smoke from Canada is expected to move over the U.S., impacting air quality for millions of people on Friday and this weekend. Maps and satellite imagery show the large-scale impact of the blazes.

More than 90 fires out of 174 active blazes were burning “out of control” across Canada as of Thursday, according to the Canadian Interagency Forest Fire Center, forcing thousands of people to flee their homes. 

A state of emergency was declared in the province of Saskatchewan where over a dozen fires are raging. Earlier this week, 17,000 people were told to flee blazes in Manitoba, a neighboring province that borders North Dakota and Minnesota.

Satellite imagery from Thursday showed a massive smoke plume spanning 3,000 miles from Montana to the Atlantic.