945  
WWUS85 KRIW 152149  
SPSRIW  
 
SPECIAL WEATHER STATEMENT  
NATIONAL WEATHER SERVICE RIVERTON WY  
349 PM MDT MON SEP 15 2025  
 
WYZ020-152215-  
NATRONA COUNTY LOWER ELEVATIONS-  
349 PM MDT MON SEP 15 2025  
 
...STRONG THUNDERSTORMS WILL IMPACT WEST CENTRAL NATRONA COUNTY  
THROUGH 415 PM MDT...  
 
AT 349 PM MDT, DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG  
A LINE EXTENDING FROM NEAR WALTMAN REST AREA TO 8 MILES SOUTH OF  
WALTMAN. MOVEMENT WAS EAST AT 40 MPH.  
 
HAZARD...WIND GUSTS UP TO 50 MPH AND HALF INCH HAIL.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...GUSTY WINDS COULD KNOCK DOWN TREE LIMBS AND BLOW AROUND  
UNSECURED OBJECTS. MINOR HAIL DAMAGE TO VEGETATION IS  
POSSIBLE.  
 
STRONG THUNDERSTORMS WILL BE NEAR...  
WALTMAN AROUND 355 PM MDT.  
POWDER RIVER AROUND 405 PM MDT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF OUTDOORS, CONSIDER SEEKING SHELTER INSIDE A BUILDING.  
 

 
 
LAT...LON 4325 10691 4292 10683 4294 10728 4314 10733  
TIME...MOT...LOC 2149Z 258DEG 35KT 4310 10728 4296 10725  
 
MAX HAIL SIZE...0.50 IN  
MAX WIND GUST...50 MPH  
 

 
 
GERHARDT  
 
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