The air quality could be unhealthy for sensitive groups.
Warm temps with low humidity and strong winds were the fuel.
Fires that start could explosively spread.
Two homes burned down Monday as a result of burning grass and leaves.
Recent, large wildfires in Minnesota are nowhere near the size of these monsters.
A red flag warning has been issued for the northern two-thirds of the state.
The fire nearly doubled in size overnight because of strong winds.
Gov. Dayton has signed executive orders to help other states dealing with natural disaster.
And it could pose health concerns for some.