First published 9/18/2026, 10:06:15 PM · Last updated 9/18/2026, 10:06:15 PM

Small Craft Advisory issued September 18 at 2:52PM PDT until September 19 at 3:00AM PDT by NWS San Francisco CA

The National Weather Service San Francisco issued a Small Craft Advisory on 2026-09-18T21:52:00Z, valid from Sep 18 2:52 PM PDT through Sep 19 3:00 AM PDT, warning of hazardous marine conditions for small vessels in the San Francisco coastal area.

Categories: severe-weather-and-natural-disasters, travel-and-transportation

Generated scores

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

Confidence: 9/10How 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: 5/10The 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).
Positivity: 2/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 7/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

Hazardous seas and/or wind conditions can endanger small boats, disrupt marine operations and ferry services, and pose safety risks to recreational and commercial mariners along the San Francisco coast.

Location

Sources

Small Craft Advisory issued September 18 at 2:52PM PDT until September 19 at 3:00AM PDT by NWS San Francisco CA

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