First published Oct 31, 2026, 1:13:15 PM UTC · Last updated Oct 31, 2026, 1:13:15 PM UTC

Coastal and marine hazards

Coastal Flood Warning — NWS Key West FL

Original source title

Coastal Flood Warning issued October 31 at 9:02AM EDT until November 1 at 5:00AM EST by NWS Key West FL

Reported by U.S. National Weather Service Alerts NWS

A Coastal Flood Warning covers the Upper Florida Keys, including Monroe Upper Keys, through early Sunday morning. The warning describes major saltwater flooding, possible road closures, and inundation of low-lying property and some critical infrastructure.

At a glance

Affected location: Upper Florida Keys

Illustrative image: Florida Everglades is a region of broad, slow-moving sheets of water flowing southward over low-lying areas from Lake Okeechobeeto the Gulf of Mexico. These images fromNASA Terra satellite show the Everglades region on January 16, 2002. — NASA/GSFC/LaRC/JPL, MISR Team/NASA Image and Video Library, NASA Media Usage Guidelines

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Why it matters

Officials advise protecting flood-prone property and avoiding barricades or water of unknown depth when traveling.

Location

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Generated scores

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

Confidence: 7/10How 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: 5/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 6/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

U.S. National Weather Service Alerts NWS Coastal Flood Warning issued October 31 at 9:02AM EDT until November 1 at 5:00AM EST by NWS Key West FL

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