Images: The Pagami Creek wildfire in Minnesota

In this aerial photo, an area of the Pagami Creek wildfire shows active burning and creates a large smoke plume on Tuesday Sept. 13, 2011 in the Boundary Waters Canoe Area Wilderness in Northeastern Minnesota. The haze from the fire was heavy enough that some people reported burning eyes and difficulty breathing in the Chicago area, 400 miles south of the forest fire, the National Weather Service said. ASSOCIATED PRESS

A rotating sprinkler sprays down the Sawbill Outfitters main building and entry area to help prevent it from burning should the forest fire reach the area, Tuesday, Sept. 13, 2011 in Tofte, Minn. ASSOCIATED PRESS

A dark wall of smoke creeps up from the right side of the photo as the sun goes into a cloud over Sawbill Lake, Minn., Tuesday evening, Sept. 13, 2011. ASSOCIATED PRESS

This photo provided Sept. 13, 2011, by the Superior National Forest shows a forest fire in the Boundary Waters Canoe Area Sept. 11 near Ely, Minn. Strong winds whipped fire that started Aug. 18 with a lightning strike started in the wilderness area into a blaze that covered 60,000 acres Tuesday in the northeastern part of the state. ASSOCIATED PRESS

In this aerial photo, an area of the Pagami Creek wildfire shows active burning and creates a large smoke plume on Tuesday Sept. 13, 2011 in the Boundary Waters Canoe Area Wilderness in Northeastern Minnesota. The haze from the fire was heavy enough that some people reported burning eyes and difficulty breathing in the Chicago area, 600 miles south of the forest fire, the National Weather Service said. ASSOCIATED PRESS

In this aerial photo, an area of the Pagami Creek wildfire shows active burning and creates a large smoke plume on Tuesday Sept. 13, 2011 in the Boundary Waters Canoe Area Wilderness in Northeastern Minnesota. The haze from the fire was heavy enough that some people reported burning eyes and difficulty breathing in the Chicago area, 600 miles south of the forest fire, the National Weather Service said. ASSOCIATED PRESS

In this aerial photo, an area of the Pagami Creek wildfire shows active burning and creates a large smoke plume on Tuesday Sept. 13, 2011 in the Boundary Waters Canoe Area Wilderness in Northeastern Minnesota. The haze from the fire was heavy enough that some people reported burning eyes and difficulty breathing in the Chicago area, 400 miles south of the forest fire, the National Weather Service said. ASSOCIATED PRESS

In this aerial photo, an area of the Pagami Creek wildfire shows active burning and creates a large smoke plume on Tuesday Sept. 13, 2011 in the Boundary Waters Canoe Area Wilderness in Northeastern Minnesota. The haze from the fire was heavy enough that some people reported burning eyes and difficulty breathing in the Chicago area, 600 miles south of the forest fire, the National Weather Service said. ASSOCIATED PRESS

This Sept. 12, 2011 image taken by the Aqua satellite and made available by the USDA Forest ServiceÂ’s Remote Sensing Applications Center and NASA, shows a view of the forest fire burning in northeastern Minnesota. Calmer winds Wednesday, Sept. 14, should slow the growth of the huge wildfire that has engulfed woodland in northeastern Minnesota and blanketed cities hundreds of miles away with a smoky haze. ASSOCIATED PRESS

In this aerial photo, an area of the Pagami Creek wildfire shows active burning and creates a large smoke plume on Tuesday Sept. 13, 2011 in the Boundary Waters Canoe Area Wilderness in Northeastern Minnesota. The haze from the fire was heavy enough that some people reported burning eyes and difficulty breathing in the Chicago area, 600 miles south of the forest fire, the National Weather Service said. ASSOCIATED PRESS