685  
FLUS45 KRIW 220830  
HWORIW  
 
HAZARDOUS WEATHER OUTLOOK  
NATIONAL WEATHER SERVICE RIVERTON WY  
230 AM MDT THU MAY 22 2025  
 
WYZ001>020-022>030-231230-  
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS-  
NORTH BIGHORN BASIN-SOUTHWEST BIGHORN BASIN-SOUTHEAST BIGHORN BASIN-  
OWL CREEK AND BRIDGER MOUNTAINS-BIGHORN MOUNTAINS WEST-  
BIGHORN MOUNTAINS SOUTHEAST-NORTHEAST JOHNSON COUNTY-  
SOUTHEAST JOHNSON COUNTY-TETON AND GROS VENTRE MOUNTAINS-  
JACKSON HOLE-WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-  
UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS-  
GREEN MOUNTAINS AND RATTLESNAKE RANGE-  
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY-  
SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS-  
UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-  
ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-  
230 AM MDT THU MAY 22 2025  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.  
   
DAY ONE
 
TODAY AND TONIGHT.  
 
ISOLATED SHOWERS AND THUNDERSTORMS DEVELOP ACROSS NORTHERN AND  
CENTRAL WY THIS AFTERNOON/EVENING. STRONG GUSTY OUTFLOW WINDS WILL BE  
THE MAIN CONCERN WITH ANY DEVELOPING SHOWERS OR STORMS. GUSTY WINDS  
AND LOW RH VALUES OF 15-20% WILL LEAD TO NEAR ELEVATED FIRE WEATHER  
CONCERNS ACROSS PORTIONS OF SOUTHERN WY.  
   
DAYS TWO THROUGH SEVEN
 
FRIDAY THROUGH WEDNESDAY.  
 
THURSDAY AND FRIDAY...SCATTERED AFTERNOON AND EVENING SHOWERS AND  
THUNDERSTORMS OCCUR ACROSS MAINLY THE NORTH HALF OF THE STATE.  
 
SATURDAY AND SUNDAY...A WEATHER SYSTEM MOVES ACROSS THE REGION AND  
PROVIDES THE CHANCE FOR WIDESPREAD PRECIPITATION.  
 
MEMORIAL DAY AND TUESDAY...SCATTERED AFTERNOON AND EVENING SHOWERS  
AND THUNDERSTORMS LINGER IN THE WAKE OF THE WEEKEND WEATHER SYSTEM.  
   
SPOTTER INFORMATION STATEMENT
 
 
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER  
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.  
 

 
 
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