The Cram Fire in Oregon has become the largest wildfire in the U.S. this year, surpassing 95,000 acres. Favorable weather has helped slow the blaze, but experts warn of worsening fire seasons and the increasing likelihood of megafires across the American West.

The Butte Creek fire, burning 30 miles northwest of Madras, also started Friday, this one on the Confederated Tribes of Warm Springs Reservation. It has grown to 2,000 acres and is 5% contained, according to the Northwest Interagency Coordination Center. No homes have been burned.