Weather
Flood Advisory Issued In San Mateo County As More Rain Arrives
Cal Fire CZU posted videos of roads flooded in Half Moon Bay, El Granada and Moss Beach.

SAN MATEO COUNTY, CA — San Mateo County firefighters responded to multiple flooding calls in the coastal areas of the county on Thursday morning as rain battered the Peninsula.
The National Weather Service issued a flood advisory for San Mateo County until 9:30 a.m., with urban and small stream flooding expected. Periods of rain are expected to continue throughout the morning.
Cal Fire CZU posted videos of roads flooded in Half Moon Bay, El Granada and Moss Beach.
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Heavy flooding was reported at Highway 1 at California Avenue in Moss Beach:
HAPPENING NOW: Highway 1 at California Avenue is flooded. #CaWx https://t.co/j6APiHLMOz
— CAL FIRE CZU (@CALFIRECZU) December 23, 2021
Here is another look at the flooding in Moss Beach at Hwy 1 this morning. We are in for an extended period of rain, and driving conditions are expected to deteriorate. For your safety, drive with extreme caution, and stay home if possible. #CaWx @sanmateoco pic.twitter.com/QH2no0ghWH
— CAL FIRE CZU (@CALFIRECZU) December 23, 2021
On Corral Reef Avenue in El Granada, trees were downed in a residential neighborhood as water reached several feet.
Find out what's happening in Pacificafor free with the latest updates from Patch.
We are responding to multiple flooding calls across the coastal area in @sanmateoco. This is the current scene on Corral Reef Ave in El Granada. #CaWx #TurnAroundDontDrown pic.twitter.com/JXvSb8XSRu
— CAL FIRE CZU (@CALFIRECZU) December 23, 2021
Water also piled up near the Half Moon Bay airport:
This is a current look at Highway 1 next to the @CityofHMB airport. #CaWx @sanmateoco pic.twitter.com/jR07fYXrXZ
— CAL FIRE CZU (@CALFIRECZU) December 23, 2021
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