First published Oct 18, 2026, 5:27:16 PM UTC · Last updated Oct 18, 2026, 5:27:16 PM UTC

Flood Warning issued October 18 at 1:21PM AST until October 18 at 4:15PM AST by NWS San Juan PR

A flood warning was issued for parts of Humacao and Naguabo, Puerto Rico, and flooding was already occurring near Río Blanco. The alert reported potentially impassable roads and remained in effect until 4:15 PM AST.

Illustrative image: Looking northeast across the San Juan River on Vancouver Island, British Columbia. — Sergey Pesterev/Wikimedia Commons, CC BY-SA 2.0

Why it matters

Flooding was occurring and the warning identified roads that could be impassable.

Location

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: 8/10How 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: 4/10The 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: 8/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

U.S. National Weather Service Alerts NWS Flood Warning issued October 18 at 1:21PM AST until October 18 at 4:15PM AST by NWS San Juan PR

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