NEWBERRY, Mich. — A wildfire in Michigan’s Upper Peninsula has nearly doubled in size, consuming an estimated 17,000 acres.

Ed Golder of the state Department of Natural Resources said Friday the fire grew overnight from about 9,500 acres. Golder said dry and windy conditions are expected to cause the blaze to grow. The blaze officials are calling the Duck Lake Fire is raging in Luce County north of Newberry.

Golder said more than 40 structures are threatened and six have been lost. He said it wasn’t immediately clear whether they were homes or outbuildings. An unknown number of people have been evacuated.

The fire is one of two wildfires in the area.

Crews continue fighting a fire at the Seney National Wildlife Refuge in Schoolcraft County that’s burned 3,000 to 3,200 acres.