281  
WWUS75 KRIW 011846  
NPWRIW  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE RIVERTON WY  
1246 PM MDT SAT AUG 1 2026  
 
WYZ003>006-010-011-013-016>020-023-025>030-021315-  
/O.CON.KRIW.HT.Y.0002.000000T0000Z-260803T0400Z/  
CODY FOOTHILLS-NORTH BIGHORN BASIN-SOUTHWEST BIGHORN BASIN-  
SOUTHEAST BIGHORN BASIN-NORTHEAST JOHNSON COUNTY-SOUTHEAST  
JOHNSON COUNTY-JACKSON HOLE-UPPER WIND RIVER BASIN-WIND RIVER  
BASIN-LANDER FOOTHILLS-GREEN MOUNTAINS AND RATTLESNAKE RANGE-  
NATRONA COUNTY LOWER ELEVATIONS-STAR VALLEY-UPPER GREEN RIVER  
BASIN FOOTHILLS-UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-ROCK  
SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-  
INCLUDING THE CITIES OF LOVELL, THAYNE, GREYBULL, BUFFALO, FARSON,  
WAMSUTTER, ROCK SPRINGS, PINEDALE, TEN SLEEP, KEMMERER, STAR VALLEY  
RANCH, JACKSON, ALPINE, WORLAND, SHELL, KAYCEE, LANDER, DUBOIS,  
THERMOPOLIS, CLARK, SHOSHONI, COKEVILLE, CODY, BIG PINEY, BASIN,  
POWELL, RIVERTON, GREEN RIVER, LA BARGE, JEFFREY CITY, AFTON,  
MEETEETSE, AND CASPER  
1246 PM MDT SAT AUG 1 2026  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM MDT SUNDAY  
 
* WHAT...HOT TEMPERATURES EXPECTED THIS WEEKEND. HIGHS FROM 98 TO 105  
BELOW 5500 FEET, 90 TO 98 ABOVE 5500 FEET.  
 
* WHERE...PORTIONS OF CENTRAL, NORTH CENTRAL, NORTHWEST, SOUTH  
CENTRAL, SOUTHWEST, AND WEST CENTRAL WYOMING.  
 
* WHEN...UNTIL 10 PM MDT SUNDAY.  
 
* IMPACTS...HEAT RELATED ILLNESSES INCREASE DURING EXTREME HEAT  
EVENTS.  
 
* ADDITIONAL DETAILS...SOME LOCATIONS WILL NOT SEE TEMPERATURES FALL  
BELOW 90 DEGREES UNTIL SUNSET.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
DRINK PLENTY OF HYDRATING FLUIDS, TAKE BREAKS IN AIR-CONDITIONED  
SPACES, REDUCE TIME IN THE SUN, AND CHECK ON RELATIVES AND NEIGHBORS.  
 
TAKE EXTRA PRECAUTIONS WHEN OUTSIDE. WEAR LIGHTWEIGHT AND LOOSE  
FITTING CLOTHING. TRY TO LIMIT STRENUOUS ACTIVITIES TO LATE EVENING.  
TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE.  
 
 
 
 
 
VANDENBOOGART  
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