More than 100 homes were destroyed by a wildfire that exploded in size within hours on Sunday, prompting California Gov. Jerry Brown to issue a state of emergency for Lake and Napa counties, about 100 miles north of San Francisco.
Wind gusts that reached up to 30 mph sent embers raining down on homes, charring 62 square miles within 12 hours. The blaze raced through several towns overnight. An Associated Press photographer reported seeing dozens of homes destroyed and a roughly 40-unit apartment complex burned to the ground.
California's emergency chief says this summer's fires are the most volatile he has seen in 30 years of emergency response work. Mark Ghilarducci, director of the Governor's Office of Emergency Services, says the main cause behind the fast-spreading fires is dry conditions from the four-year drought.
No deaths have been reported. Four firefighters suffered second-degree burns in fighting the blaze Saturday and are hospitalized in stable condition.
California has asked for help from Nevada, Oregon, Utah, Colorado and Washington state.