FORESTHILL, Calif.—Firefighters made progress against a huge Northern California wildfire that was still growing and threatening thousands of mountain homes on Sunday, while crews also battled major blazes that blanketed large swaths of Oregon and Washington in smoke.
The Mosquito Fire in foothills east of Sacramento spread to nearly 65 square miles with 10 percent containment, according to the California Department of Forestry and Fire Protection, or Cal Fire.