Firefighters are battling wildfires in Northern California and the wealthy west side of Los Angeles that have forced tens of thousands to flee their homes. The blaze that broke out last week amid Sonoma County's vineyards and wineries north of San Francisco exploded to at least 103 square miles, destroying 96 buildings, including at least 40 homes, and threatening 80,000 more structures. Nearly 200,000 people were under evacuation orders, mostly from the city of Santa Rosa. In Southern California, the Los Angeles fire erupted before dawn on Monday and roared up slopes into wealthy neighbourhoods, threatening thousands of homes. Tens of thousands of people were ordered to evacuate.