180  
WWUS45 KPIH 231110  
WSWPIH  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE POCATELLO ID  
510 AM MDT THU APR 23 2026  
 
IDZ069-071>074-231215-  
/O.CAN.KPIH.WW.Y.0010.000000T0000Z-260423T1200Z/  
LOST RIVER RANGE-FRANK CHURCH WILDERNESS-SAWTOOTH/STANLEY BASIN-  
SUN VALLEY REGION-BIG LOST HIGHLANDS/COPPER BASIN-  
INCLUDING THE CITIES OF BORAH PEAK, KETCHUM, SUN VALLEY, CLAYTON,  
GALENA, COPPER BASIN, AND STANLEY  
510 AM MDT THU APR 23 2026  
   
..WINTER WEATHER ADVISORY IS CANCELLED  
 
WEATHER RADAR INDICATES SNOW HAS ENDED IN THE CENTRAL IDAHO  
MOUNTAINS. THE LAST HOUR OF THE WINTER WEATHER ADVISORY HAS BEEN  
CANCELED.  
 
 
 
IDZ060-063-064-066-240600-  
/O.CON.KPIH.WW.Y.0010.000000T0000Z-260424T0600Z/  
BEAR RIVER RANGE-CARIBOU RANGE-BIG HOLE MOUNTAINS-CENTENNIAL  
MOUNTAINS - ISLAND PARK-  
INCLUDING THE CITIES OF ISLAND PARK, VICTOR, SWAN VALLEY,  
KILGORE, WAYAN, AND EMIGRATION SUMMIT  
510 AM MDT THU APR 23 2026  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT  
TONIGHT ABOVE 6500 FEET ELEVATION...  
 
* WHAT...SNOW ABOVE 6500 FEET ELEVATION. ADDITIONAL SNOW  
ACCUMULATIONS UP TO 6 INCHES. WINDS GUSTING AS HIGH AS 40 MPH.  
 
* WHERE...BIG HOLE MOUNTAINS, CENTENNIAL MOUNTAINS - ISLAND PARK,  
BEAR RIVER RANGE, AND CARIBOU RANGE.  
 
* WHEN...UNTIL MIDNIGHT MDT TONIGHT.  
 
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS  
CONDITIONS COULD IMPACT THE THURSDAY MORNING AND EVENING COMMUTES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. CALL 5 1 1 OR VISIT  
511.IDAHO.GOV FOR THE LATEST ROAD CONDITIONS.  
 
 
 
 
 
VISIT WEATHER.GOV/POCATELLO FOR MORE INFORMATION.  
 
MESSICK  
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