First published Oct 21, 2026, 10:33:15 PM UTC · Last updated Oct 21, 2026, 10:33:15 PM UTC

Thunderstorms and lightning

Special Marine Warning — NWS Los Angeles/Oxnard CA

Original source title

Special Marine Warning issued October 21 at 3:19PM PDT until October 21 at 4:15PM PDT by NWS Los Angeles/Oxnard CA

Reported by U.S. National Weather Service Alerts NWS

The warning covers specified California offshore waters where radar-indicated severe thunderstorms could produce waterspouts and wind gusts above 50 knots. The source instructs boaters to move to safe harbor immediately.

At a glance

Affected location: California coastal waters

Share this event

Follow: Severe weather in United States

Manage follows

Why it matters

The warning describes immediate hazards to boats, including possible capsizing and structural damage.

Location

Highlighted marker: this event.

Generated scores

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

Confidence: 8/10How 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: 3/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 4/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 8/10How 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 3:19PM PDT until October 21 at 4:15PM PDT by NWS Los Angeles/Oxnard CA

Report an issue

Read our editorial process and corrections policy.

Continue exploring

Related developments reported in the last 30 days. These are not necessarily ongoing incidents.

Same topic
Severe Thunderstorm Warnings — Las VegasOct 21, 2026, 10:57 PM UTC
3 related advisories are grouped here. Expand the group to review every affected area and source advisory.
Same topic
Severe Thunderstorm Warnings — PhoenixOct 21, 2026, 10:54 PM UTC
7 related advisories are grouped here. Expand the group to review every affected area and source advisory.
Same topic
Winter Storm Watch issued October 21 at 2:37PM AKDT until October 25 at 4:00PM AKDT by NWS Fairbanks AKOct 21, 2026, 10:37 PM UTC
The National Weather Service issued a winter storm watch for the South Slopes of the Central Brooks Range and Upper Koyukuk Valley, including Bettles, Coldfoot, and Wiseman. Heavy snow and gusts up to 35 mph are possible from Saturday morning through Sunday afternoon, and travel could be very difficult.
Same topic
NWS Los Angeles/Oxnard issues immediate marine warning for severe thunderstorms and waterspouts off California’s central coastOct 21, 2026, 10:25 PM UTC
The National Weather Service warned of a severe thunderstorm capable of producing waterspouts, gusts near 50 knots and small hail in coastal waters from Point Piedras Blancas toward Santa Cruz Island. Boaters were told to seek safe harbor immediately; the warning was in effect until 4:15 p.m. PDT.
Same topic
Severe Thunderstorm Warnings — AlbuquerqueOct 21, 2026, 10:19 PM UTC
5 related advisories are grouped here. Expand the group to review every affected area and source advisory.
Same topic
Severe Thunderstorm Warnings — TucsonOct 21, 2026, 10:18 PM UTC
5 related advisories are grouped here. Expand the group to review every affected area and source advisory.

Loading related developments…

Explore severe weather in united states