
Authorities have reported the closure of several roads due to flooding in San Mateo.
San Mateo police have urged drivers to avoid the area of 42nd Avenue between El Camino Real and Pacific Boulevard, which is a Caltrain underpass, as well as the area of Delaware Street between Bermuda Drive and Saratoga Drive.
They also say Bermuda Drive is also flooding due to the overflow of Borel Creek.
The National Weather Service reported Saturday morning that Alameda and Contra Costa counties were under a flood warning until 9:30 a.m.

Residents can expect minor flooding in low-lying and poorly drained areas.
Santa Cruz County is also under a flood warning until 12:15 p.m. as urban and small stream flooding is expected due to excessive rainfall.
Authorities also said flooding of urban areas and small streams is expected in Santa Clara County on Saturday, New Year's Eve.
The National Weather Service has reported that moderate to heavy rainfall continues across the North Bay and is also beginning to affect the San Francisco Peninsula and East Bay.
In that sense, the authorities reminded drivers to avoid flooded roads.
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