Weather Alerts For Castroville, CA

URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 510 PM PST Wed Dec 17 2025 Northern Monterey Bay-Southern Monterey Bay and Big Sur Coast- 510 PM PST Wed Dec 17 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 PM PST THIS EVENING... * WHAT...Visibility one to two miles in dense fog. * WHERE...Monterey Bay and the Big Sur Coast. * WHEN...Until 9 PM PST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&