A red-flag warning is in effect for the East Bay hills and North Bay interior mountains from Wednesday night through Thursday morning due to high winds and low humidity. PG&E may implement power shutoffs in Sonoma, Napa, and other counties to prevent wildfires.
Temperatures could reach 100°F in the hottest areas by Thursday, with a gradual cooldown through the weekend. Residents should prepare for possible outages and extreme fire danger.