406 

WWUS85 KCYS 290555

SPSCYS



Special Weather Statement

National Weather Service Cheyenne WY

1155 PM MDT Sun Jun 28 2026

 

NEZ095-096-WYZ102-108-290645-

North Sioux NE-South Sioux NE-Goshen County WY-Niobrara County WY-

1155 PM MDT Sun Jun 28 2026



...A STRONG THUNDERSTORM WILL IMPACT CENTRAL SIOUX...SOUTHEASTERN

NIOBRARA AND NORTHEASTERN GOSHEN COUNTIES THROUGH 1245 AM MDT...



At 1155 PM MDT, Doppler radar was tracking a strong thunderstorm 12

miles southwest of Agate Fossil Beds National Monument, or 19 miles

northeast of Torrington, moving northeast at 40 mph.



HAZARD...Wind gusts up to 50 mph and penny size hail.



SOURCE...Radar indicated.



IMPACT...Gusty winds could knock down tree limbs and blow around 

         unsecured objects. Minor hail damage to vegetation is 

         possible.



Locations impacted include...

Harrison, Van Tassell, Agate Fossil Beds National Monument, and Fort

Robinson State Park.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



If outdoors, consider seeking shelter inside a building. 



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.



&&



LAT...LON 4221 10393 4226 10425 4275 10415 4269 10353

TIME...MOT...LOC 0555Z 204DEG 35KT 4232 10400 



MAX HAIL SIZE...0.75 IN

MAX WIND GUST...50 MPH



$$



Trudel