UPDATE: Flood advisory forecast to expire at 4:30 a.m., says the NWS
"The Flood Advisory will expire at 4:30 a.m. early this morning for a portion of northern California, including the following areas, San Francisco and San Mateo. The heavy rain has ended. Urban area and small stream flooding is no longer expected to pose a threat. Please continue to heed remaining road closures," states the NWS San Francisco CA.