Ten structures — including four homes — have been destroyed by a wildfire sweeping through central Oregon as thousands of homes in the state and in Northern California wine country remained under evacuation orders Monday.

Firefighters are battling wildfires in California and Oregon force evacuations as dry winds and heat fuel rapid spread.

Firefighters are battling Oregon's Flat Fire covering 22,000 acres and threatening hundreds of structures despite recent weather improvements and new containment lines.