First published Oct 21, 2026, 9:57:15 PM UTC · Last updated Oct 21, 2026, 9:57:15 PM UTC

Thunderstorms and lightning

Special Marine Warning — NWS Los Angeles/Oxnard CA

Original source title

Special Marine Warning issued October 21 at 2:22PM PDT until October 21 at 4:15PM PDT by NWS Los Angeles/Oxnard CA

Reported by U.S. National Weather Service Alerts NWS

The National Weather Service issued a warning for severe thunderstorms capable of producing waterspouts in offshore waters near California, with gusts up to 40 knots. Mariners were instructed to move to safe harbor immediately; the warning was in effect until 4:15 PM PDT.

At a glance

Affected location: Offshore waters near Point Piedras Blancas, Point Sal, Santa Cruz Island, and San Clemente Island

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Why it matters

The warning describes immediate hazards that could overturn boats or damage small craft.

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: 3/10How 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 2:22PM PDT until October 21 at 4:15PM PDT by NWS Los Angeles/Oxnard CA

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