The National Weather Service has issued a urban and small stream flood advisory in the San Francisco Bay Area until 8:30 pm Thursday. They say at 4:30 pm, their radar indicated widespread moderate to heavy rain.
Here is a look at the alert:
FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
456 PM PST THU MAR 10 2016
THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED
A
* URBAN AND SMALL STREAM FLOOD ADVISORY FOR…
SOUTHERN NAPA COUNTY IN NORTHERN CALIFORNIA…
SOUTHEASTERN SONOMA COUNTY IN NORTHERN CALIFORNIA…
WESTERN ALAMEDA COUNTY IN NORTHERN CALIFORNIA…
SAN FRANCISCO COUNTY IN NORTHERN CALIFORNIA…
MARIN COUNTY IN NORTHERN CALIFORNIA…
CONTRA COSTA COUNTY IN NORTHERN CALIFORNIA…
NORTHERN SAN MATEO COUNTY IN NORTHERN CALIFORNIA…
* UNTIL 830 PM PST
* AT 430 PM PST…DOPPLER RADAR INDICATED WIDESPREAD MODERATE TO
HEAVY RAIN MOVING INTO PORTIONS OF THE NORTH BAY…THE SAN
FRANCISCO PENINSULA…AND PORTIONS OF THE EAST BAY. PERIODS OF
HEAVY RAIN WILL RESULT IN URBAN FLOODING OF LOW LYING AREAS AS
WELL AS AREAS OF POOR DRAINAGE. ALSO…RAPID RISES WILL OCCUR ON
AREA STREAMS AND CREEKS AND SOME WILL LIKELY FLOOD.
* A FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL SONOMA
COUNTY UNTIL 8 PM THURSDAY EVENING. FLOODING IS OCCURRING ON THE
LICHAU CREEK IN PENNGROVE PARK AND IS EXPECTED TO OCCUR ALONG
THE WILLOW BROOK AT STONY POINT ROAD AND DOWNRIVER INTO PETALUMA.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE… ALL URBAN
AREAS IN SOUTHERN SONOMA COUNTY…SOUTHERN NAPA COUNTY…MARIN
COUNTY…SAN FRANCISCO…NORTHERN SAN MATEO COUNTY….NORTHWESTERN
ALAMEDA COUNTY AND WESTERN CONTRA COSTA COUNTY. IN ADDITION…
MARK WEST CREEK…SANTA ROSA CREEK…PETALUMA RIVER…WILLOW
BROOK AND LICHAU CREEK.
DYKEMA
