341  
WWUS45 KPIH 210847  
WSWPIH  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE POCATELLO ID  
247 AM MDT SAT JUN 21 2025  
 
IDZ069>074-220015-  
/O.CON.KPIH.WW.Y.0017.000000T0000Z-250623T0000Z/  
LOST RIVER RANGE-CHALLIS/PAHSIMEROI VALLEYS-FRANK CHURCH  
WILDERNESS-SAWTOOTH/STANLEY BASIN-SUN VALLEY REGION-BIG LOST  
HIGHLANDS/COPPER BASIN-  
INCLUDING THE CITIES OF KETCHUM, CLAYTON, COPPER BASIN, STANLEY,  
GALENA, BORAH PEAK, CHALLIS, AND SUN VALLEY  
247 AM MDT SAT JUN 21 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY  
ABOVE 7500 FEET ELEVATION...  
 
* WHAT...TOTAL SNOW ACCUMULATIONS OF 2 TO 10 INCHES ABOVE 7500 FEET  
AND A TRACE TO 2 INCHES BELOW 7500 FEET.  
 
* WHERE...BIG LOST HIGHLANDS/COPPER BASIN, CHALLIS/PAHSIMEROI  
VALLEYS, FRANK CHURCH WILDERNESS, LOST RIVER RANGE,  
SAWTOOTH/STANLEY BASIN, AND SUN VALLEY REGION.  
 
* WHEN...UNTIL 6 PM MDT SUNDAY.  
 
* IMPACTS...TRAVEL COULD BE DIFFICULT, ESPECIALLY IN THE  
BACKCOUNTRY. THOSE RECREATING IN THE HIGHER ELEVATIONS SHOULD BE  
PREPARED FOR WINTER WEATHER CONDITIONS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. CALL 5 1 1 OR VISIT  
511.IDAHO.GOV FOR THE LATEST ROAD CONDITIONS.  
 
 
 
 
 
IDZ066-067-220015-  
/O.CON.KPIH.WW.Y.0017.250622T0600Z-250623T0000Z/  
CENTENNIAL MOUNTAINS - ISLAND PARK-BEAVERHEAD - LEMHI HIGHLANDS-  
INCLUDING THE CITIES OF KILGORE, EDIE SCHOOL, ISLAND PARK,  
SPENCER, DUBOIS, AND SMALL  
247 AM MDT SAT JUN 21 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT  
TO 6 PM MDT SUNDAY ABOVE 7500 FEET ELEVATION...  
 
* WHAT...TOTAL SNOW ACCUMULATIONS OF 2 TO 6 INCHES ABOVE 7500 FEET  
AND A TRACE TO 2 INCHES BELOW 7500 FEET.  
 
* WHERE...BEAVERHEAD - LEMHI HIGHLANDS AND CENTENNIAL MOUNTAINS -  
ISLAND PARK.  
 
* WHEN...FROM MIDNIGHT TONIGHT TO 6 PM MDT SUNDAY.  
 
* IMPACTS...TRAVEL COULD BE DIFFICULT, ESPECIALLY IN THE  
BACKCOUNTRY. THOSE RECREATING IN THE HIGHER ELEVATIONS SHOULD BE  
PREPARED FOR WINTER WEATHER CONDITIONS.  
 
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.  
 
MACKAY  
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