258  
WUUS55 KRIW 102304  
SVRRIW  
WYC025-102345-  
/O.NEW.KRIW.SV.W.0121.230910T2304Z-230910T2345Z/  
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED  
SEVERE THUNDERSTORM WARNING  
NATIONAL WEATHER SERVICE RIVERTON WY  
504 PM MDT SUN SEP 10 2023  
 
THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A  
 
* SEVERE THUNDERSTORM WARNING FOR...  
SOUTHEASTERN NATRONA COUNTY IN CENTRAL WYOMING...  
 
* UNTIL 545 PM MDT.  
 
* AT 504 PM MDT, A SEVERE THUNDERSTORM WAS LOCATED 10 MILES EAST OF  
BEARTRAP MEADOWS COUNTY PARK, WHICH IS ALSO 13 MILES SOUTHEAST OF  
CASPER, MOVING SOUTHEAST AT 25 MPH.  
 
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE  
TO ROOFS, SIDING, AND TREES.  
 
* THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF  
SOUTHEASTERN NATRONA COUNTY, INCLUDING THE FOLLOWING LOCATIONS...  
CASPER MOUNTAIN.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A  
BUILDING.  
 
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM, AND MAY LEAD TO  
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.  
 

 
 
LAT...LON 4243 10614 4273 10619 4280 10607 4243 10607  
TIME...MOT...LOC 2304Z 329DEG 20KT 4271 10612  
 
HAIL THREAT...RADAR INDICATED  
MAX HAIL SIZE...1.00 IN  
WIND THREAT...RADAR INDICATED  
MAX WIND GUST...60 MPH  
 

 
 
WITTMANN  
 
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