An atmospheric river storm system hitting Northern California this week has triggered multiple weather alerts, including a flood watch and wind advisory in parts of the Bay Area.
The flood watch is in effect in Sonoma, Napa and Marin counties from 4 a.m. Wednesday through 4 a.m. Saturday, according to the National Weather Service.
Excessive rainfall could cause creeks, streams and rivers to rise, resulting in flooding in some areas, the weather service said. Ponding could also occur in low-lying areas and on roadways.
UPDATE: The Flood Watch has been extended through 4 AM Saturday due to increased confidence in flooding impacts. https://t.co/zYGuRkduL0
— NWS Bay Area 🌉 (@NWSBayArea) November 19, 2024
A wind advisory is in effect in coastal and higher elevation areas of the North Bay, San Francisco, East Bay hills, Santa Clara County hills, Peninsula hills, and the Santa Cruz Mountains from 10 p.m. Thursday until 10 p.m. Friday, according to the weather service.
Winds out of the south could range from 15 to 30 mph with gusts up to 50 mph, the weather service said.
A Wind Advisory has been issued from 10 pm tonight through 10 pm Friday
— NWS Bay Area 🌉 (@NWSBayArea) November 21, 2024
Expect south winds 15 to 30 mph with gusts up to 50 mph expected, locally higher gusts greater than 60 mph are possible above 2,500 feet.#CAwx pic.twitter.com/AfiHl3aJv3
Dangerous coastal conditions prompted the weather service to issue a high surf advisory for beaches up and down the Bay Area coastline, excluding the Santa Cruz area, where a beach hazard statement was issued instead. Both alerts were in effect from 6 a.m. Wednesday to 6 a.m. Friday.
Dangerous wave action associated with the onset of the strong Atmospheric River will result in hazardous swimming and surf conditions the next few days. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. #CAwx pic.twitter.com/vqzYbuFrWk
— NWS Bay Area 🌉 (@NWSBayArea) November 20, 2024
Visit NBC Bay Area's weather page for the latest storm updates and forecast information.
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