Weather Alerts For Napa, CA

Coastal Hazard Message National Weather Service San Francisco CA 1202 PM PST Thu Dec 4 2025 San Francisco-North Bay Interior Valleys- San Francisco Bay Shoreline-Northern Monterey Bay- Southern Monterey Bay and Big Sur Coast- 1202 PM PST Thu Dec 4 2025 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST SUNDAY... * WHAT...Up to 1.4 ft of inundation above ground level is possible in low lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along San Francisco and Monterey Bay. * WHEN...Until 3 PM PST Sunday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...The San Francisco tidal gauge high tide is expected to be 1.4 ft above normal (7.23 ft MLLW) at 10:35 AM Friday, 1.2 ft above normal (7.08 ft MLLW) at 11:25 AM Saturday, and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM Sunday. High tide timing varies up to 90 minutes earlier or later along the Pacific Coast and throughout the San Francisco Bay respectively. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. &&