A fast-spreading wildfire in California's wine country sparked evacuation orders as firefighters battled the blaze Saturday.

In Oregon, the Flat Fire in Deschutes and Jefferson counties had grown to almost 34 square miles (88 square kilometers), with no containment, and threatened nearly 4,000 homes, according to the state Fire Marshal’s Office. About 10,000 people were under some sort of evacuation notice.

A wildfire in California's Napa County has scorched more than 6,800 acres, forcing evacuations and threatening the region's grapes.