####018002356####
WWUS45 KPIH 211945

WSWPIH



URGENT - WINTER WEATHER MESSAGE

National Weather Service Pocatello ID

145 PM MDT Sat Jun 21 2025



IDZ069>074-221130-

/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 Borah Peak, Sun Valley, Stanley, Galena,

Challis, Clayton, Copper Basin, and Ketchum

145 PM MDT Sat Jun 21 2025



...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY 

ABOVE 7500 FEET ELEVATION...



* WHAT...Snow expected to accumulate above 7500 feet elevation. 

  Additional snow accumulations up to 8 inches.



* 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.



&&



$$



IDZ066-067-221130-

/O.CON.KPIH.WW.Y.0017.250622T0600Z-250623T0000Z/

Centennial Mountains - Island Park-Beaverhead - Lemhi Highlands-

Including the cities of Island Park, Edie School, Spencer,

Dubois, Small, and Kilgore

145 PM MDT Sat Jun 21 2025



...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT 

TO 6 PM MDT SUNDAY ABOVE 7500 FEET ELEVATION...



* WHAT...Snow expected to accumulate above 7500 feet elevation. 

  Total snow accumulations up to 7 inches.



* 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.



Messick