Ten structures — including four homes — have been destroyed by a wildfire sweeping through central Oregon, where thousands of residents remained under evacuation orders on Monday, while a blaze in Northern California wine country has so far spared some of the state’s most famous vineyards.

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

Thousands of homes in Northern California wine country and central Oregon were under evacuation orders and warnings Sunday as firefighting crews battled wildfires in dry, hot weather. The Pickett Fire,