326  
WWUS45 KMSO 170119  
WSWMSO  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE MISSOULA MT  
619 PM MST MON DEC 16 2024  
 
MTZ007-171600-  
/O.EXA.KMSO.WW.Y.0057.000000T0000Z-241217T1600Z/  
BUTTE/BLACKFOOT REGION-  
619 PM MST MON DEC 16 2024  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM MST TUESDAY  
 
* WHAT...SNOW. LIKELIHOOD OF DEVELOPING OR ONGOING MINOR TO MODERATE  
IMPACTS FROM AROUND 1 TO 3 INCHES OF SNOW IS 80 PERCENT, AND 3 TO  
6 INCHES OF SNOW IS LESS THAN 20 PERCENT.  
 
* WHERE...GEORGETOWN LAKE, HOMESTAKE PASS, BUTTE, MACDONALD PASS,  
AND HIGHWAY 12 GARRISON TO ELLISTON.  
 
* WHEN...UNTIL 9 AM MST TUESDAY.  
 
* IMPACTS...FOR MODERATE IMPACTS FROM SNOW, EXPECT DISRUPTIONS TO  
NORMAL ACTIVITIES. HAZARDOUS TRAVELING CONDITIONS. USE EXTRA  
CAUTION WHILE DRIVING. FOR MINOR IMPACTS FROM SNOW, EXPECT A FEW  
INCONVENIENCES TO NORMAL ACTIVITIES. USE CAUTION WHILE DRIVING.  
THE HAZARDOUS CONDITIONS COULD IMPACT THE TUESDAY MORNING COMMUTE,  
ESPECIALLY OVER HIGHER PASSES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD  
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY  
CALLING 5 1 1.  
 
 
 
 
 
IDZ005-171600-  
/O.CON.KMSO.WW.Y.0057.000000T0000Z-241217T1600Z/  
NORTHERN CLEARWATER MOUNTAINS-  
519 PM PST MON DEC 16 2024  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST  
TUESDAY...  
 
* WHAT...SNOW. LIKELIHOOD OF DEVELOPING OR ONGOING MINOR TO MODERATE  
IMPACTS FROM AROUND 1 TO 3 INCHES OF SNOW IS 90 PERCENT, AND 3 TO  
6 INCHES OF SNOW IS 30 PERCENT.  
 
* WHERE...ELK RIVER, HIGHWAY 11 PIERCE TO HEADQUARTERS, AND PIERCE.  
 
* WHEN...UNTIL 8 AM PST TUESDAY.  
 
* IMPACTS...FOR MINOR IMPACTS FROM SNOW, EXPECT A FEW INCONVENIENCES  
TO NORMAL ACTIVITIES. USE CAUTION WHILE DRIVING. FOR MODERATE  
IMPACTS FROM SNOW, EXPECT DISRUPTIONS TO NORMAL ACTIVITIES.  
HAZARDOUS TRAVELING CONDITIONS. USE EXTRA CAUTION WHILE DRIVING.  
THE HAZARDOUS CONDITIONS COULD IMPACT THE MONDAY EVENING AND  
TUESDAY MORNING COMMUTES, ESPECIALLY OVER HIGHER PASSES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD  
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY  
CALLING 5 1 1.  
 
 
 
 
 
IDZ006-MTZ006-171600-  
/O.CON.KMSO.WW.Y.0057.000000T0000Z-241217T1600Z/  
SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS-  
619 PM MST MON DEC 16 2024 /519 PM PST MON DEC 16 2024/  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST /8 AM  
PST/ TUESDAY...  
 
* WHAT...SNOW. LIKELIHOOD OF DEVELOPING OR ONGOING MINOR TO MODERATE  
IMPACTS FROM AROUND 1 TO 3 INCHES OF SNOW IS 100 PERCENT, AND 3 TO  
6 INCHES OF SNOW IS 80 PERCENT.  
 
* WHERE...HIGHWAY 93 SULA TO LOST TRAIL PASS, DIXIE, ELK CITY, LOLO  
PASS, AND HIGHWAY 12 LOWELL TO LOLO PASS.  
 
* WHEN...UNTIL 9 AM MST /8 AM PST/ TUESDAY.  
 
* IMPACTS...FOR MODERATE IMPACTS FROM SNOW, EXPECT DISRUPTIONS TO  
NORMAL ACTIVITIES. HAZARDOUS TRAVELING CONDITIONS. USE EXTRA  
CAUTION WHILE DRIVING. CLOSURES AND DISRUPTIONS TO INFRASTRUCTURE  
MAY OCCUR. WINTER TRAVELING CONDITIONS. THE HAZARDOUS CONDITIONS  
COULD IMPACT THE TUESDAY MORNING COMMUTE, ESPECIALLY OVER HIGHER  
PASSES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD  
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY  
CALLING 5 1 1.  
 
 
 
 
 
MTZ001-171600-  
/O.CON.KMSO.WW.Y.0057.000000T0000Z-241217T1600Z/  
KOOTENAI/CABINET REGION-  
619 PM MST MON DEC 16 2024  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST  
TUESDAY...  
 
* WHAT...SNOW. LIKELIHOOD OF MINOR TO MODERATE IMPACTS FROM  
AROUND 1 TO 3 INCHES OF SNOW IS 90 PERCENT, AND 3 TO 6 INCHES OF  
SNOW IS LESS THAN 10 PERCENT.  
 
* WHERE...HIGHWAY 93 EUREKA TO WHITEFISH, HIGHWAY 37 EUREKA TO  
LIBBY, HIGHWAY 56 BULL LAKE ROAD, AND HIGHWAY 2 KALISPELL TO LIBBY.  
 
* WHEN...UNTIL 9 AM MST TUESDAY.  
 
* IMPACTS...FOR MINOR IMPACTS FROM SNOW, EXPECT A FEW INCONVENIENCES  
TO NORMAL ACTIVITIES. USE CAUTION WHILE DRIVING. WINTER TRAVELING  
CONDITIONS. THE HAZARDOUS CONDITIONS COULD IMPACT THE TUESDAY  
MORNING COMMUTE, ESPECIALLY OVER HIGHER PASSES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD  
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY  
CALLING 5 1 1.  
 
 
 
 
 
MTZ002-171600-  
/O.CON.KMSO.WW.Y.0057.000000T0000Z-241217T1600Z/  
WEST GLACIER REGION-  
619 PM MST MON DEC 16 2024  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST  
TUESDAY...  
 
* WHAT...SNOW. LIKELIHOOD OF MINOR TO MODERATE IMPACTS FROM  
AROUND 1 TO 3 INCHES OF SNOW IS 100 PERCENT, AND 3 TO 6 INCHES OF  
SNOW IS 20 PERCENT FOR ESSEX TO MARIAS PASS.  
 
* WHERE...POLEBRIDGE, BAD ROCK CANYON, HIGHWAY 83 BIGFORK TO SWAN  
LAKE, ESSEX, AND MARIAS PASS.  
 
* WHEN...UNTIL 9 AM MST TUESDAY.  
 
* IMPACTS...FOR MODERATE IMPACTS FROM SNOW, EXPECT DISRUPTIONS TO  
NORMAL ACTIVITIES. HAZARDOUS TRAVELING CONDITIONS. USE EXTRA  
CAUTION WHILE DRIVING. CLOSURES AND DISRUPTIONS TO INFRASTRUCTURE  
MAY OCCUR. WINTER TRAVELING CONDITIONS. THE HAZARDOUS CONDITIONS  
COULD IMPACT THE TUESDAY MORNING COMMUTE, ESPECIALLY OVER HIGHER  
PASSES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD  
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY  
CALLING 5 1 1.  
 
 
 
 
 
MTZ003-171600-  
/O.CON.KMSO.WW.Y.0057.000000T0000Z-241217T1600Z/  
FLATHEAD/MISSION VALLEYS-  
619 PM MST MON DEC 16 2024  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST  
TUESDAY...  
 
* WHAT...SNOW. LIKELIHOOD OF DEVELOPING OR ONGOING MINOR TO MODERATE  
IMPACTS FROM AROUND 1 TO 3 INCHES OF SNOW IS 70 PERCENT, AND 3 TO  
6 INCHES OF SNOW IS LESS THAN 10 PERCENT.  
 
* WHERE...MISSION VALLEY, FLATHEAD LAKE, POLSON, AND FLATHEAD VALLEY.  
 
* WHEN...UNTIL 9 AM MST TUESDAY.  
 
* IMPACTS...FOR MINOR IMPACTS FROM SNOW, EXPECT A FEW INCONVENIENCES  
TO NORMAL ACTIVITIES. USE CAUTION WHILE DRIVING. THE HAZARDOUS  
CONDITIONS COULD IMPACT THE TUESDAY MORNING COMMUTE, ESPECIALLY  
OVER HIGHER PASSES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD  
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY  
CALLING 5 1 1.  
 
 
 
 
 
MTZ004-171600-  
/O.CON.KMSO.WW.Y.0057.000000T0000Z-241217T1600Z/  
LOWER CLARK FORK REGION-  
619 PM MST MON DEC 16 2024  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST  
TUESDAY...  
 
* WHAT...SNOW EXPECTED. LIKELIHOOD OF MINOR TO MODERATE IMPACTS FROM  
AROUND 1 TO 3 INCHES OF SNOW IS 100 PERCENT, AND 3 TO 6 INCHES OF  
SNOW IS 50 PERCENT FOR LOOKOUT PASS.  
 
* WHERE...HIGHWAY 200 TROUT CREEK TO HERON, HIGHWAY 200 THOMPSON  
FALLS TO PLAINS, I-90 LOOKOUT PASS TO HAUGAN, AND EVARO HILL.  
 
* WHEN...UNTIL 9 AM MST TUESDAY.  
 
* IMPACTS...FOR MINOR IMPACTS FROM SNOW, EXPECT A FEW INCONVENIENCES  
TO NORMAL ACTIVITIES. USE CAUTION WHILE DRIVING. WINTER TRAVELING  
CONDITIONS. THE HAZARDOUS CONDITIONS COULD IMPACT THE TUESDAY  
MORNING COMMUTE, ESPECIALLY OVER HIGHER PASSES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD  
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY  
CALLING 5 1 1.  
 
 
 
 
 
MTZ043-171600-  
/O.CON.KMSO.WW.Y.0057.000000T0000Z-241217T1600Z/  
POTOMAC/SEELEY LAKE REGION-  
619 PM MST MON DEC 16 2024  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST  
TUESDAY...  
 
* WHAT...SNOW. LIKELIHOOD OF DEVELOPING OR ONGOING MINOR TO MODERATE  
IMPACTS FROM AROUND 1 TO 3 INCHES OF SNOW IS 90 PERCENT, AND 3 TO  
6 INCHES OF SNOW IS LESS THAN 10 PERCENT.  
 
* WHERE...I-90 EAST MISSOULA TO BEARMOUTH, HIGHWAY 83 SEELEY LAKE TO  
CONDON, AND HIGHWAY 200 BONNER TO GREENOUGH.  
 
* WHEN...UNTIL 9 AM MST TUESDAY.  
 
* IMPACTS...FOR MINOR IMPACTS FROM SNOW, EXPECT A FEW INCONVENIENCES  
TO NORMAL ACTIVITIES. USE CAUTION WHILE DRIVING. WINTER TRAVELING  
CONDITIONS. THE HAZARDOUS CONDITIONS COULD IMPACT THE TUESDAY  
MORNING COMMUTE, ESPECIALLY OVER HIGHER PASSES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD  
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY  
CALLING 5 1 1.  
 
 
 
 
 
AL  
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