At least 9 million people in the nation's upper Midwest region are under red flag warnings on Monday, including residents of Minnesota, where a wildfire was already burning out of control in the largest national forest east of the Mississippi River.

A map showing Michigan’s fire risk highlights much of the Lower Peninsula in the “very high” risk category, with just a few spots in the “high risk” zone.

Elevated fire danger will exist May 12-13 as warm temperatures, low humidity levels and gusty winds become mixed with dry, fine vegetation and grasses, according to the weather service.