| Event | Special Weather Statement |
| Severity | Moderate |
| Urgency | Expected |
| Certainty | Observed |
| Area | Southern Foothills; Western Fall River; Eastern Fall River |
| Effective | 9/18/2026, 8:39:00 PM CDT |
| Expires | 9/18/2026, 9:15:00 PM CDT |
Special Weather Statement issued September 18 at 7:39PM MDT by NWS Rapid City SD
Details
At 739 PM MDT, Automated observations a line of strong thunderstorms
extending from near Edgemont to 10 miles southwest of Ardmore, or
extending from near Edgemont to 23 miles south of Edgemont, moving
east at 30 mph.
HAZARD…Wind gusts up to 45 mph.
SOURCE…Automated observations.
IMPACT…Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include…
Edgemont, Provo, Rumford, Ardmore, Cascade Falls and Cottonwood
Springs Dam.
Instructions
Monitor the weather situation closely and be alert for threatening
weather conditions.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.
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