First published Oct 22, 2026, 12:21:15 AM UTC · Last updated Oct 22, 2026, 12:21:15 AM UTC

Coastal and marine hazards

Special Marine Warning — NWS San Diego CA

Original source title

Special Marine Warning issued October 21 at 5:07PM PDT until October 21 at 5:30PM PDT by NWS San Diego CA

Reported by U.S. National Weather Service Alerts NWS

The warning covered offshore waters from San Mateo Point to the Mexican border, including San Clemente Island. A shower capable of producing waterspouts and wind gusts of at least 34 knots was reported; mariners were instructed to move to safe harbor.

At a glance

Affected location: Waters from San Mateo Point to the Mexican border, including San Clemente Island

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Why it matters

The warning calls for protective action from mariners while hazardous conditions pass.

Location

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Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 7/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 2/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 3/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 9/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

U.S. National Weather Service Alerts NWS Special Marine Warning issued October 21 at 5:07PM PDT until October 21 at 5:30PM PDT by NWS San Diego CA

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