First published 9/18/2026, 10:08:15 PM · Last updated 9/18/2026, 10:08:15 PM

Small Craft Advisory issued by NWS San Francisco CA (Sep 18 2:52PM PDT – Sep 19 3:00AM PDT)

The National Weather Service in San Francisco issued a Small Craft Advisory beginning Sep 18 at 2:52 PM PDT through Sep 19 at 3:00 AM PDT, warning of marine conditions hazardous to small vessels along the San Francisco coastal waters.

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: 3/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 6/10The 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).
Positivity: 3/10How 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

Small craft advisories indicate winds and/or seas that can endanger small boats, disrupt marine operations, and affect coastal recreational activities and short-distance transport. Mariners and coastal users should take precautions or avoid operating small vessels during the advisory period.

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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