Severe Thunderstorm Warning issued September 18 at 8:32PM MDT until September 18 at 8:45PM MDT by NWS Cheyenne WY
At 831 PM MDT, severe thunderstorms were located along a line extending from 10 miles south of Agate Fossil Beds National Monument to 7 miles northwest of Lake Alice, moving northeast at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and tre...
**Severe Thunderstorm Warning issued September 18 at 8:32PM MDT until September 18 at 8:45PM MDT by NWS Cheyenne WY**
At 831 PM MDT, severe thunderstorms were located along a line extending from 10 miles south of Agate Fossil Beds National Monument to 7 miles northwest of Lake Alice, moving northeast at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
These severe thunderstorms will remain over mainly rural areas of southwestern Sioux County.
**What You Should Do:**
For your protection move to an interior room on the lowest floor of a building.
**Alert Details:**
- **Severity:** Severe
- **Urgency:** Immediate
- **Issued by:** NWS Cheyenne WY
- **Effective:** Sep 18, 2026 8:32 PM UTC
- **Expires:** Sep 18, 2026 8:45 PM UTC
*This alert was automatically distributed from the National Weather Service via the IPAWS All-Hazards Information Feed.*
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