Update: A Flash Flood Warning has been issued for Sonoma County by the National Weather Service. A Flash Flood Watch is in effect for the interior valleys.
The National Weather Service on Sunday issued a flood advisory for Sonoma County.
Severe weather conditions, sustained rain and high tides could bring flooding to low-lying areas, according to the weather service.
The Highway Patrol is keeping a watch on the intersection of Highway 121 and Highway 12 in Schellville, south of Sonoma, where flooding caused closure for part of Saturday.
One man died on Highway 121 on Saturday, when his vehicle spun out of control on a curve.
In Petaluma, areas off Industrial Avenue and Auto Row could be prone to flooding, officials said.
To get current road closure information for unincorporated Sonoma County, go to this Public Works map. There are some closures in the western part of the county.
For real-time water level information for Napa County rivers and creeks, click on this Patch link.
Residents or business owners should take appropriate steps to prepare.
Motorists should not attempt to wade or drive through flooded areas.
Anyone with an emergency should call 911.
Bay City News Service contributed to this report.