The brunt of a storm packing sub-tropical moisture continued to rush over the Bay Area Thursday, bringing widespread rain and gusty winds at times to the region.
No severe weather alerts are in effect as of Thursday afternoon, but the onslaught of wet weather prompted a flood advisory through 9 a.m. for parts of Marin, Napa and Sonoma counties, according to the National Weather Service. A flash flood warning was also issued for a section of Sonoma County until 9:15 a.m.
As a result of this week's wet weather, as much as 3 to 6 inches of rainfall could fall across coastal mountains through Thursday, according to the NWS. An estimated three-fourths to 1 1/2 inches of rain is expected to fall across cities immediately surrounding the San Francisco Bay while anywhere from one-half to 1 inch of rain will accumulate in some inland locations.
Bay Area drivers are advised to keep an eye out for ponding as well as debris on roadways, weather officials said.
Wind speeds are expected to top out anywhere from 15 to 30 mph, according to the NWS. Some gusts could peak around 40 mph, leading to possible power outages.
Isolated thunderstorms along with hail are also possible Thursday, according to the NWS. There is a general thunder risk for most of the Bay Area while a marginal risk of thunderstorms is in play for California's Central Valley.
Clearing is expected to kick in Thursday evening, but scattered rain chances will hang around through Sunday.