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
“Significant coastal flooding expected.”
NWS San Diego CA, Coastal Flood Warning, 1:09 AM PDT Oct 28, 2026 · official alert
“Numerous roads may be closed.”
NWS San Diego CA, Coastal Flood Warning, 1:09 AM PDT Oct 28, 2026 · official alert
“Take the necessary actions to protect flood-prone property.”
NWS San Diego CA, Coastal Flood Warning, 1:09 AM PDT Oct 28, 2026 · official alert
What to do
Take steps now to protect flood-prone property. Move valuables and vehicles away from low-lying areas near the shore.
Expect the highest water around late-morning high tides. Plan trips around them, since numerous roads may be closed.
If you must travel, do not drive around barricades or through water of unknown depth. The National Weather Service notes that 6 inches of moving water can knock you down and 1 foot can sweep a vehicle away.
Coastal residents and managers of infrastructure in the warned area should prepare for rising water and move to higher ground if water approaches.
Context
Flood insurance claims since 1978 total 2,447 in San Diego County and 3,843 in Orange County, as of 2026-09-09. These counts cover only properties with flood insurance, so they understate total flood damage.
Both counties have had federal disaster declarations for flooding. They share declaration 4305 from March 16, 2017, for severe winter storms, flooding, and mudslides. San Diego County also has declaration 4758 from February 19, 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 has a Coastal Flood Warning for San Diego County coastal areas until 1:00 PM PDT Thursday.
- Is Orange County also under the coastal flood warning?
- Yes. Orange County coastal areas are included in the same warning, which runs until 1:00 PM PDT Thursday.
- What impacts does the National Weather Service expect?
- Numerous roads may be closed, and low-lying homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur in the late mornings.
Sources
- NWS San Diego CA: Coastal Flood Warning, Oct 28, 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.