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Coastal Flood Warning Issued for San Diego and Orange County Coasts

October 28, 2026 · wweather1 editorial · 2 min read

The National Weather Service has issued a Coastal Flood Warning for coastal areas in San Diego County and Orange County from October 28 at 1:09 AM PDT until October 29 at 1:00 PM PDT. Significant coastal flooding is expected during late morning high tides.

The National Weather Service office in San Diego, California, issued the warning at 1:09 AM PDT on October 28. The alert remains in effect until 1:00 PM PDT on October 29, covering low-lying coastal regions in both San Diego County and Orange County.

Significant coastal flooding and shoreline erosion are anticipated, particularly during late morning high tide periods. According to the National Weather Service, observed high tides are running 1.4 to 1.6 feet above astronomical tide predictions.

The elevated water levels are expected to cause numerous road closures across the affected regions. Inundation is anticipated for low-lying property, including residential homes, businesses, and critical infrastructure.

Coastal residents and managers of local infrastructure are advised to prepare for rising water levels and take appropriate actions to protect life and property throughout the duration of the event.

Why it is dangerous and what to do

⚠️ Safety
• Take necessary actions to protect flood-prone property.
• Do not drive around road barricades.
• Avoid driving through water of unknown depth.
• Prepare for rising water levels during late morning high tides.
📊 The numbers, from wweather1 data
San Diego: now +16°, Partly cloudy.
The record for this date is +30° (1944).
Three-day forecast: 28 October: +23°/+20° · 29 October: +22°/+19° · 30 October: +20°/+18°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

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📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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