423
WWUS45 KMSO 261704
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1104 AM MDT FRI JUN 26 2026
IDZ009-291500-
/O.UPG.KMSO.WS.A.0004.260628T0000Z-260629T1500Z/
/O.NEW.KMSO.WS.W.0004.260628T0000Z-260629T1500Z/
WESTERN LEMHI COUNTY-
1104 AM MDT FRI JUN 26 2026
...WINTER STORM WARNING IN EFFECT FROM 6 PM SATURDAY TO 9 AM MDT
MONDAY ABOVE 6500 FEET...
* WHAT...HEAVY WET SNOW EXPECTED ABOVE 6500 FEET. TOTAL SNOW
ACCUMULATIONS OF 4 TO 8 INCHES, WITH UP TO 12 INCHES ACROSS THE
HIGHEST PEAKS.
* WHERE...BACKCOUNTRY AND HIGHER ELEVATION AREAS, INCLUDING WILLIAMS
CREEK SUMMIT.
* WHEN...FROM 6 PM SATURDAY TO 9 AM MDT MONDAY.
* IMPACTS...PLAN FOR WINTER-LIKE CONDITIONS IN THE BACKCOUNTRY AND
HIGHER ELEVATIONS. COLD TEMPERATURES AND WET SNOW WILL ELEVATE THE
RISK OF HYPOTHERMIA. HEAVY WET SNOW MAY DOWN TREES, BLOCKING ACCESS
TO BACKCOUNTRY ROADWAYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PERSONS SHOULD CONSIDER DELAYING TRAVEL ACROSS THE BACKCOUNTRY AND
HIGHER ELEVATIONS. IF TRAVEL IS ABSOLUTELY NECESSARY, CONSIDER TAKING
A WINTER STORM KIT ALONG WITH YOU, INCLUDING SUCH ITEMS AS TIRE
CHAINS, BOOSTER CABLES, FLASHLIGHT, SHOVEL, BLANKETS AND EXTRA
CLOTHING. ALSO TAKE WATER, A FIRST AID KIT, AND ANYTHING ELSE THAT
WOULD HELP YOU SURVIVE IN CASE YOU BECOME STRANDED.
IDZ010-291500-
/O.UPG.KMSO.WS.A.0004.260628T0000Z-260629T1500Z/
/O.NEW.KMSO.WS.W.0004.260628T0000Z-260629T1500Z/
EASTERN LEMHI COUNTY-
1104 AM MDT FRI JUN 26 2026
...WINTER STORM WARNING IN EFFECT FROM 6 PM SATURDAY TO 9 AM MDT
MONDAY ABOVE 6500 FEET...
* WHAT...HEAVY WET SNOW POSSIBLE ABOVE 6500 FEET. TOTAL SNOW
ACCUMULATIONS OF 4 TO 8 INCHES, WITH UP TO 12 INCHES ACROSS THE
HIGHEST PEAKS.
* WHERE...BACKCOUNTRY AND HIGHER ELEVATION AREAS, HIGHWAY 28 TENDOY
TO LONE PINE, LEMHI PASS, AND BANNOCK PASS.
* WHEN...FROM 6 PM SATURDAY TO 9 AM MDT MONDAY.
* IMPACTS...PLAN FOR WINTER-LIKE CONDITIONS IN THE BACKCOUNTRY AND
HIGHER ELEVATIONS. COLD TEMPERATURES AND WET SNOW WILL ELEVATE THE
RISK OF HYPOTHERMIA. HEAVY WET SNOW MAY DOWN TREES, BLOCKING ACCESS
TO BACKCOUNTRY ROADWAYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PERSONS SHOULD CONSIDER DELAYING TRAVEL ACROSS THE BACKCOUNTRY AND
HIGHER ELEVATIONS. IF TRAVEL IS ABSOLUTELY NECESSARY, CONSIDER TAKING
A WINTER STORM KIT ALONG WITH YOU, INCLUDING SUCH ITEMS AS TIRE
CHAINS, BOOSTER CABLES, FLASHLIGHT, SHOVEL, BLANKETS AND EXTRA
CLOTHING. ALSO TAKE WATER, A FIRST AID KIT, AND ANYTHING ELSE THAT
WOULD HELP YOU SURVIVE IN CASE YOU BECOME STRANDED.
MTZ006-291500-
/O.UPG.KMSO.WS.A.0004.260628T0000Z-260629T1500Z/
/O.NEW.KMSO.WS.W.0004.260628T0000Z-260629T1500Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
1104 AM MDT FRI JUN 26 2026
...WINTER STORM WARNING IN EFFECT FROM 6 PM SATURDAY TO 9 AM MDT
MONDAY ABOVE 6500 FEET...
* WHAT...HEAVY WET SNOW EXPECTED ABOVE 6500 FEET. TOTAL SNOW
ACCUMULATIONS OF 4 TO 8 INCHES, WITH UP TO 12 INCHES ACROSS THE
HIGHEST PEAKS.
* WHERE...SKALKAHO PASS, NEZ PERCE PASS, BACKCOUNTRY AND HIGHER
ELEVATION AREAS.
* WHEN...FROM 6 PM SATURDAY TO 9 AM MDT MONDAY.
* IMPACTS...PLAN FOR WINTER-LIKE CONDITIONS IN THE BACKCOUNTRY AND
HIGHER ELEVATIONS. COLD TEMPERATURES AND WET SNOW WILL ELEVATE THE
RISK OF HYPOTHERMIA. HEAVY WET SNOW MAY DOWN TREES, BLOCKING ACCESS
TO BACKCOUNTRY ROADWAYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PERSONS SHOULD CONSIDER DELAYING TRAVEL ACROSS THE BACKCOUNTRY AND
HIGHER ELEVATIONS. IF TRAVEL IS ABSOLUTELY NECESSARY, CONSIDER TAKING
A WINTER STORM KIT ALONG WITH YOU, INCLUDING SUCH ITEMS AS TIRE
CHAINS, BOOSTER CABLES, FLASHLIGHT, SHOVEL, BLANKETS AND EXTRA
CLOTHING. ALSO TAKE WATER, A FIRST AID KIT, AND ANYTHING ELSE THAT
WOULD HELP YOU SURVIVE IN CASE YOU BECOME STRANDED.
MTZ007-291500-
/O.UPG.KMSO.WS.A.0004.260628T0000Z-260629T1500Z/
/O.NEW.KMSO.WS.W.0004.260628T0000Z-260629T1500Z/
BUTTE/BLACKFOOT REGION-
1104 AM MDT FRI JUN 26 2026
...WINTER STORM WARNING IN EFFECT FROM 6 PM SATURDAY TO 9 AM MDT
MONDAY ABOVE 6500 FEET...
* WHAT...HEAVY WET SNOW EXPECTED ABOVE 6500 FEET. TOTAL SNOW
ACCUMULATIONS OF 4 TO 8 INCHES, WITH 8 TO 16 INCHES ACROSS THE
ANACONDA PINTLER MOUNTAINS.
* WHERE...GEORGETOWN LAKE, BACKCOUNTRY AND HIGHER ELEVATION AREAS.
* WHEN...FROM 6 PM SATURDAY TO 9 AM MDT MONDAY.
* IMPACTS...PLAN FOR WINTER-LIKE CONDITIONS IN THE BACKCOUNTRY AND
HIGHER ELEVATIONS. COLD TEMPERATURES AND WET SNOW WILL ELEVATE THE
RISK OF HYPOTHERMIA. HEAVY WET SNOW MAY DOWN TREES, BLOCKING ACCESS
TO BACKCOUNTRY ROADWAYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PERSONS SHOULD CONSIDER DELAYING TRAVEL ACROSS THE BACKCOUNTRY AND
HIGHER ELEVATIONS. IF TRAVEL IS ABSOLUTELY NECESSARY, CONSIDER TAKING
A WINTER STORM KIT ALONG WITH YOU, INCLUDING SUCH ITEMS AS TIRE
CHAINS, BOOSTER CABLES, FLASHLIGHT, SHOVEL, BLANKETS AND EXTRA
CLOTHING. ALSO TAKE WATER, A FIRST AID KIT, AND ANYTHING ELSE THAT
WOULD HELP YOU SURVIVE IN CASE YOU BECOME STRANDED.
AL
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