First published 9/19/2026, 1:19:15 AM · Last updated 9/19/2026, 1:19:15 AM

Severe Thunderstorm Warning issued September 18 at 7:13PM MDT until September 18 at 7:15PM MDT by NWS Grand Junction CO

The National Weather Service in Grand Junction, CO issued a Severe Thunderstorm Warning on September 18 at 7:13 PM MDT (valid until 7:15 PM MDT). Short-duration severe thunderstorm conditions were forecast/observed in the Grand Junction, Colorado area.

Categories: severe-weather-and-natural-disasters

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

Why it matters

Severe thunderstorms can produce damaging winds, large hail, intense rainfall, and brief localized flash flooding, posing risks to people, property, and travel in the warned area during the warning period.

Location

Sources

Severe Thunderstorm Warning issued September 18 at 7:13PM MDT until September 18 at 7:15PM MDT by NWS Grand Junction CO

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