Michigan Department of Natural Resources fire personnel spent much of the night and early morning hours Wednesday, working to contain several wildfires, including three that were significant in Crawford, Wexford, and Newaygo Counties. The cause of all three fires is unknown and currently under investigation. Red flag fire conditions Tuesday across the northern Lower Peninsula resulted in an active day for wildfires throughout the area. Red flag fire warnings are issued when weather conditions are expected to include strong winds, warm temperatures and low relative humidity – a combination that can lead to very high or extreme fire danger.