First published Sep 19, 2026, 9:38:15 AM UTC · Last updated Oct 20, 2026, 2:20:00 AM UTC

Small Craft Advisory — NWS San Francisco CA

Original source title

Small Craft Advisory issued September 19 at 2:33AM PDT until September 21 at 9:00AM PDT by NWS San Francisco CA

Reported by U.S. National Weather Service Alerts NWS

The National Weather Service San Francisco issued a Small Craft Advisory covering coastal/marine areas near San Francisco from 2026-09-19T02:33:00-07:00 until 2026-09-21T09:00:00-07:00, warning hazardous conditions for small vessels.

At a glance

Region: California

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Why it matters

Small boats and recreational or commercial marine traffic may face hazardous winds and seas; mariners should exercise caution, avoid exposed areas, or seek safe harbor. Coastal operations and short-range marine transportation could be disrupted.

Location

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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: 5/10The 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: 7/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

U.S. National Weather Service Alerts NWS Small Craft Advisory issued September 19 at 2:33AM PDT until September 21 at 9:00AM PDT by NWS San Francisco CA

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