Flood advisory active for San Mateo County early Sunday morning caused by substantial rain

San Mateo County was placed under an updated flood advisory by the National Weather Service on Sunday at 2:01 a.m. The advisory is in effect until 5 a.m.

According to the NWS San Francisco CA, “Flooding caused by excessive rainfall is expected.”

“Minor flooding in low-lying and poor drainage areas,” according to the NWS. “Turn around, don’t drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the...