Flooding and downed trees made a mess for some drivers trying to navigate the waterlogged Bay Area Wednesday.
Both directions of state Highway 37 in unincorporated Marin County and state Highway 12 in unincorporated Sonoma County were closed due to roadway flooding, according to the California Highway Patrol.
Highway 37, which was closed between Highway 101 and Atherton Avenue, reopened to eastbound traffic Wednesday afternoon. Westbound 37 was still underwater, and there was no estimated time for reopening those lanes, the CHP said.
Highway 12 near Sebastopol was closed around 12:30 a.m. between Morris Street and Llano Road.
A main thoroughfare in Walnut Creek is also closed in both directions after a tree fell and knocked over a power line, police said.
Ygnacio Valley Road is closed between Civic Drive and Walnut Boulevard while PG&E and city crews help to clear the scene, police said shortly before 7:15 a.m.
Police say the busy thoroughfare could open by midday. Drivers are advised to avoid the area and to expect delays.
PG&E crews were on the scene as the tree took down power lines, affecting thousands of customers.
As of 5:30 a.m. Wednesday, a total of 8,626 PG&E customers were without power all over the Bay Area.
In the North Bay, 5,012 customers were affected, the East Bay had 2,335, South Bay 662, the Peninsula 590 and San Francisco 27.
