First published 9/18/2026, 10:22:15 PM · Last updated 9/18/2026, 10:22:15 PM

Flash Flood Warning issued by NWS Grand Junction (Sep 18, 2026)

A Flash Flood Warning was issued September 18 at 4:13 PM MDT (2026-09-18T22:13:00Z) by the National Weather Service Grand Junction, CO, effective until 7:15 PM MDT the same day. The source title does not list specific affected counties or landmarks.

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: 7/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 6/10The 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: 10/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

Flash floods pose immediate risks to life, property, and travel. People in the warning area may need to avoid low-lying areas and roadways, move to higher ground, and follow local emergency guidance.

Location

Sources

Flash Flood Warning issued September 18 at 4:13PM MDT until September 18 at 7:15PM MDT by NWS Grand Junction CO

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