Active Weather Alerts
Small Craft Advisory
Issued: 4:30 PM Dec. 20, 2025 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 9 PM PST SUNDAY... * WHAT...South winds 15 to 25 kt with gusts up to 30 kt and rough waters expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 9 PM this evening to 9 PM PST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
Flood Watch
Issued: 1:08 PM Dec. 20, 2025 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT FROM 4 PM PST THIS AFTERNOON THROUGH MONDAY AFTERNOON... * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Northern San Francisco Bay Area (Napa, Sonoma, and Marin counties). * WHEN...From 4 PM PST this afternoon through Monday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Low water crossing may become flooded. Standing water is likely in urban areas. * ADDITIONAL DETAILS... - Moderate to heavy rain associated with an atmospheric river will impact the region this weekend. 2-3" of rain is expected in the valleys during the watch period, with up to 6" in the coastal mountains. Area rivers, streams, and creeks that are prone to flooding could see rapid rises during and after heavy rainfall. There is a slight chance for flash flooding, particularly in urban areas Saturday night. Debris flows are possible. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. &&
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