A major winter storm moved across Northern California on Thursday, bringing heavy snow and strong winds to the Sierra Nevada and steady rain through the region that disrupted the morning commute.
Dozens of collisions had been reported by 6 a.m. Thursday on San Francisco Bay Area highways, the California Highway Patrol said.
The National Weather Service describes it as one of the strongest systems this winter, with wind speeds between 20 and 35 miles per hour and gusts as high as 50 miles per hour.
A wind advisory for much of the Bay Area was issued for Thursday between 2 a.m. and 10 p.m., according to the NWS. Heavy rainfall is expected to last through Friday.
Bay Area residents should be on the lookout for blowing debris, hazardous driving conditions, gusty winds, potential downed trees and powerlines, and possible flooding throughout Thursday, according to the NWS.