First published 9/19/2026, 1:18:15 AM · Last updated 9/27/2026, 6:48:30 PM

Severe Thunderstorm Warning issued September 18 at 7:06PM MDT until September 18 at 7:15PM MDT by NWS Cheyenne WY

The National Weather Service Cheyenne Office issued a Severe Thunderstorm Warning effective September 18, 7:06 PM MDT (2026-09-19T01:06:00Z) until 7:15 PM MDT (2026-09-19T01:15:00Z).

Why it matters

Severe thunderstorm warnings indicate imminent hazardous weather (damaging winds, hail, lightning, localized flash flooding) that can threaten life, disrupt travel, and damage property in the affected area during the warning period.

Location

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: 5/10The 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).

Sources

Severe Thunderstorm Warning issued September 18 at 7:06PM MDT until September 18 at 7:15PM MDT by NWS Cheyenne WY

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