A vegetation fire that darkened skies above Roddy Ranch near Brentwood was contained but not before burning at least 32 acres, a Cal Fire official said.
Nobody was injured, and no structures were damaged, Cal Fire Batallion Chief Mike Marcucci said. The fire was contained just after 3 p.m.
Investigators have not determined the cause of the fire, which began at 1:53 p.m.
Rick Hurd covers breaking news. Contact him at 925-945-4780 and follow him at Twitter.com/3rdERH.