Weather Alerts For San Ysidro, CA

# HEADLINE -------------------- COASTAL FLOOD WARNING IN EFFECT FROM 5 AM SUNDAY TO 1 PM PDT THURSDAY # DETAILS -------------------- WHAT Significant coastal flooding expected. WHERE San Diego County Coastal Areas and Orange County Coastal Areas. WHEN From 5 AM Sunday to 1 PM PDT Thursday during high tides. IMPACTS Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur in the morning hours. ADDITIONAL DETAILS Coastal residents in the warned area should be alert for rising water and take appropriate action to protect life and property. High tides each day will occur in the morning. Tides may be anywhere from 1 to 1.7 feet above predicted. ISSUED AT Friday, October 23, 2026 at 11:03 AM PDT ISSUED BY National Weather Service San Diego CA HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Coastal Hazard Message # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. # AREAS AFFECTED -------------------- Orange County Coastal Areas, San Diego County Coastal Areas