First published Oct 23, 2026, 1:42:15 PM UTC · Last updated Oct 23, 2026, 1:42:15 PM UTC

Coastal and marine hazards

Coastal Flood Warning — NWS Key West FL

Original source title

Coastal Flood Warning issued October 23 at 9:07AM EDT until October 24 at 5:00AM EDT by NWS Key West FL

Reported by U.S. National Weather Service Alerts NWS

An official alert forecasts major saltwater inundation in the Upper Keys through Saturday morning, with possible road closures and flooding of low-lying properties and infrastructure. The alert advises protecting flood-prone property and avoiding floodwater.

At a glance

Affected location: Upper Keys

Illustrative image: The San Juan River is a significant tributary of the Colorado River in the southwestern United States, about 383 miles (616 km) long. The river drains an area of about 24,600 square miles (64,000 km2) in southwestern Colorado, northwestern New Mexico, southeastern Utah, and a small part of northeastern Arizona. The average flow of the San Juan River at Bluff is about 2,200 cubic feet per second (62 m3/s) and the highest discharge ever measured was about 70,000 cubic feet per second (2,000 m3/s) — Ken Lund from Reno, Nevada, USA/Wikimedia Commons, CC BY-SA 2.0

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Why it matters

The alert describes potential impacts to homes, businesses, roads, and critical infrastructure in the affected area.

Location

Highlighted marker: this event.

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: 2/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The 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 23 at 9:07AM EDT until October 24 at 5:00AM EDT by NWS Key West FL

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