767  
FLUS45 KRIW 251240  
HWORIW  
 
HAZARDOUS WEATHER OUTLOOK  
NATIONAL WEATHER SERVICE RIVERTON WY  
640 AM MDT TUE APR 25 2017  
 
WYZ001>020-022>030-261200-  
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS-  
NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN-  
SOUTHEAST BIG HORN 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-  
640 AM MDT TUE APR 25 2017  
 
...WINTER STORM WARNING FOR NORTHERN JOHNSON COUNTY UNTIL 6 PM  
THIS EVENING...  
...WINTER WEATHER ADVISORIES IN EFFECT FOR THE WESTERN MOUNTAINS,  
BIG HORNS AND NORTHERN JOHNSON COUNTY TODAY...  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.  
   
DAY ONE...TODAY AND TONIGHT
 
 
SNOW, HEAVY AT TIMES, IS LIKELY ACROSS JOHNSON COUNTY. PLEASE SEE  
WINTER WEATHER PRODUCTS AND FORECASTS FOR DETAILS. A MIX OF RAIN  
AND SNOW WILL FALL ELSEWHERE WITH LOCALLY SLICK ROADS POSSIBLE.  
   
DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
 
 
WEDNESDAY AFTERNOON AND NIGHT...MOUNTAIN SNOW WEST OF THE DIVIDE.  
 
THURSDAY AND FRIDAY...A SLOWLY EVOLVING COLD STORM SYSTEM WILL  
DEVELOP OVER THE GREAT BASIN AND SPREAD WIDESPREAD COLD RAIN OR  
SNOW ACROSS MUCH OF THE AREA. SIGNIFICANT SNOWFALL IS POSSIBLE  
ACROSS PARTS OF THE AREA, ESPECIALLY AROUND CENTRAL WYOMING.  
 
MONDAY...A NEW STORM SYSTEM WILL BRING THE POTENTIAL FOR  
SIGNIFICANT SNOW IN THE NORTHWEST MOUNTAINS POSSIBLY SHIFTING INTO  
PARTS OF CENTRAL WYOMING MONDAY NIGHT.  
   
SPOTTER INFORMATION STATEMENT
 
 
SPOTTERS ARE URGED TO REPORT SNOWFALL AMOUNTS OR OTHER SIGNIFICANT  
WEATHER.  
 

 
 
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