First published 9/18/2026, 10:04:15 PM · Last updated 9/18/2026, 10:04:15 PM

Special Marine Warning — NWS Key West FL (Sep 18, 2026)

The National Weather Service office in Key West, FL issued a Special Marine Warning on Sep 18, 2026 at 17:45 EDT (publishedAt 2026-09-18T21:45:00Z) valid until 18:15 EDT the same day. The warning applies to the Key West, Florida marine area during that 30-minute window.

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: 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: 9/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

Special Marine Warnings indicate short‑duration hazardous conditions on the water that are immediate and can pose danger to mariners, recreational boaters, and coastal operations during the stated time frame.

Location

Sources

Special Marine Warning issued September 18 at 5:45PM EDT until September 18 at 6:15PM EDT by NWS Key West FL

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