Key facts
- Alert
- Coastal Flood Warning (severe)
- Issued by
- National Weather Service, San Diego CA
- Areas
- San Diego County Coastal Areas; Orange County Coastal
- In effect
- until 1:00 PM PDT, Oct 29, 2026
What the National Weather Service says
“Numerous roads may be closed.”
NWS San Diego CA, Coastal Flood Warning, 1:44 AM PDT Oct 29, 2026 · official alert
“Low lying property including homes, businesses, and some critical infrastructure will be inundated.”
NWS San Diego CA, Coastal Flood Warning, 1:44 AM PDT Oct 29, 2026 · official alert
“If travel is required, do not drive around barricades or through water of unknown depth.”
NWS San Diego CA, Coastal Flood Warning, 1:44 AM PDT Oct 29, 2026 · official alert
What to do
Take steps now to protect flood-prone property. Move vehicles and valuables away from low-lying shoreline areas if you can do so safely.
Avoid travel in affected coastal areas if possible. If you must go out, do not drive around barricades or through water of unknown depth.
The National Weather Service says just 6 inches of moving water can knock you down, and 1 foot can sweep a vehicle away. Move to higher ground if water rises near you.
The warning ends at 1:00 PM PDT, then a Coastal Flood Advisory runs until 2 PM PDT Friday. Highest tides are expected around 11 AM today and noon on Friday, so keep checking conditions.
Context
Flood-insurance claims show past flooding in both counties. FEMA records list 2,447 claims in San Diego County and 3,843 in Orange County since 1978. These counts only cover insured properties, so they understate total flood losses.
Both counties were part of the March 2017 FEMA disaster declaration for severe winter storms, flooding, and mudslides. San Diego County also had a flood declaration in February 2024.
Updates
- NWS San Diego CA issued the coastal flood warning until 1:00 PM PDT.
History here
This county: 2447 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.
This county: recent federal disaster declarations
- DR-4758 (2024): severe storm and flooding
- DR-4683 (2023): severe winter storms, flooding, landslides, and mudslides
- DR-4569 (2020): wildfires
- DR-4353 (2018): wildfires, flooding, mudflows, and debris flows
- DR-4305 (2017): severe winter storms, flooding, and mudslides
This county: 3843 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.
This county: recent federal disaster declarations
- DR-4344 (2017): wildfires
- DR-4305 (2017): severe winter storms, flooding, and mudslides
- DR-1952 (2011): severe winter storms, flooding, and debris and mud flows
- DR-1810 (2008): wildfires
- DR-1731 (2007): wildfires, flooding, mud flows, and debris flows
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Questions
- Is there a coastal flood warning in San Diego County?
- Yes. The National Weather Service issued a Coastal Flood Warning for San Diego County Coastal Areas and Orange County Coastal. It remains in effect until 1:00 PM PDT today.
- What happens after the coastal flood warning ends?
- A Coastal Flood Advisory takes over from 1 PM today until 2 PM PDT Friday. The advisory covers minor coastal flooding.
- How bad is the coastal flooding expected to be?
- The National Weather Service expects significant coastal flooding during the warning. Numerous roads may be closed, low-lying property will be inundated, and some shoreline erosion will occur.
Sources
- NWS San Diego CA: Coastal Flood Warning, Oct 29, 2026 weather.gov
- FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov
How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.