904  
WWUS55 KCYS 152333  
SVSCYS  
 
SEVERE WEATHER STATEMENT  
NATIONAL WEATHER SERVICE CHEYENNE WY  
533 PM MDT FRI AUG 15 2025  
 
NEC165-160000-  
/O.CON.KCYS.SV.W.0292.000000T0000Z-250816T0000Z/  
SIOUX NE-  
533 PM MDT FRI AUG 15 2025  
 
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MDT  
FOR NORTHEASTERN SIOUX COUNTY...  
 
AT 533 PM MDT, A SEVERE THUNDERSTORM WAS LOCATED OVER MONTROSE, OR 27  
MILES SOUTH OF EDGEMONT, MOVING EAST AT 15 MPH.  
 
HAZARD...TWO INCH HAIL AND 70 MPH WIND GUSTS.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL  
DAMAGE TO ROOFS, SIDING, WINDOWS, AND VEHICLES. EXPECT  
CONSIDERABLE TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO  
MOBILE HOMES, ROOFS, AND OUTBUILDINGS.  
 
LOCATIONS IMPACTED INCLUDE...  
MONTROSE AND TOADSTOOL GEOLOGICAL PARK AND CAMPGROUND.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A  
BUILDING.  
 

 
 
LAT...LON 4275 10354 4283 10382 4297 10382 4300 10363  
4300 10353  
TIME...MOT...LOC 2333Z 260DEG 12KT 4291 10373  
 
TORNADO...POSSIBLE  
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE  
HAIL THREAT...RADAR INDICATED  
MAX HAIL SIZE...2.00 IN  
WIND THREAT...RADAR INDICATED  
MAX WIND GUST...70 MPH  
 

 
 
FULLER  
 
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