374  
WWUS85 KRIW 151904  
SPSRIW  
 
SPECIAL WEATHER STATEMENT  
NATIONAL WEATHER SERVICE RIVERTON WY  
104 PM MDT MON SEP 15 2025  
 
WYZ014-015-017-018-151930-  
WIND RIVER MOUNTAINS WEST-WIND RIVER BASIN-WIND RIVER MOUNTAINS  
EAST-LANDER FOOTHILLS-  
104 PM MDT MON SEP 15 2025  
 
...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL SUBLETTE AND  
CENTRAL FREMONT COUNTIES THROUGH 130 PM MDT...  
 
AT 104 PM MDT, DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12  
MILES EAST OF BOULDER LAKE, WHICH IS 22 MILES EAST OF PINEDALE,  
MOVING NORTHEAST AT 45 MPH.  
 
HAZARD...WIND GUSTS UP TO 40 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.  
 
THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF EAST CENTRAL  
SUBLETTE AND CENTRAL FREMONT COUNTIES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF OUTDOORS, CONSIDER SEEKING SHELTER INSIDE A BUILDING.  
 

 
 
LAT...LON 4281 10950 4291 10956 4319 10907 4291 10887  
TIME...MOT...LOC 1904Z 240DEG 49KT 4289 10943  
 
MAX HAIL SIZE...0.75 IN  
MAX WIND GUST...40 MPH  
 

 
 
WITTMANN  
 
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