New post on http://twitter.com/caltransdist3 : CAL FIRE/ Placer Co Firefighters responded to vehicle on its roof Bowman onramp to I-80. Caution to drivers to slow down. First rain lifts oils on the road surface. Making a slipping sliding Hazard. You're encouraged to not head east into the Sierras if you don't have to. http://pic.twitter.com/1Ueuggjw7E