374
WWUS45 KMSO 180010
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
510 PM MST TUE DEC 17 2024
MTZ002-190015-
/O.CON.KMSO.WS.W.0014.000000T0000Z-241219T0600Z/
WEST GLACIER REGION-
510 PM MST TUE DEC 17 2024
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
WEDNESDAY...
* WHAT...HEAVY SNOW EXPECTED. LIKELIHOOD OF MAJOR IMPACTS FROM 5 TO
10 INCHES OF SNOW ABOVE 5,000 FEET, INCLUDING MARIAS PASS, IS 90
PERCENT. THE LIKELIHOOD OF EXTREME IMPACTS FROM 10 TO 18 INCHES OF
SNOW IS 30 PERCENT. WINDS GUSTING AS HIGH AS 60 MPH. TOTAL SNOW
ACCUMULATIONS OF 1 TO 4 INCHES BELOW 5,000 FEET.
* WHERE...MARIAS PASS, HIGHWAY 83 BIGFORK TO SWAN LAKE, POLEBRIDGE,
BAD ROCK CANYON, AND ESSEX.
* WHEN...UNTIL 11 PM MST WEDNESDAY.
* IMPACTS...VISIBILITIES MAY DROP BELOW 1/4 MILE DUE TO FALLING AND
BLOWING SNOW. THE STRONG WINDS AND WEIGHT OF SNOW ON TREE LIMBS
MAY DOWN POWER LINES AND COULD CAUSE SPORADIC POWER OUTAGES.
PERIODS OF WHITEOUT CONDITIONS ARE EXPECTED ACROSS MARIAS PASS AND
WILL MAKE TRAVEL TREACHEROUS AND POTENTIALLY LIFE-THREATENING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT TOUCH DOWNED LINES AND REPORT ANY POWER OUTAGES TO YOUR
ELECTRIC COMPANY. TRAVEL IS HIGHLY DISCOURAGED DUE TO SLICK ROADWAYS
AND THE POSSIBILITY OF DOWNED TREES AND POWER LINES.
OUTDOOR RECREATIONALISTS SHOULD BE PREPARED FOR WINTER CONDITIONS.
SNOWFALL COULD IMPACT ROADS AND COLD TEMPERATURES MAY RESULT IN
HYPOTHERMIA.
IDZ005-181800-
/O.CON.KMSO.WW.Y.0058.000000T0000Z-241218T1800Z/
NORTHERN CLEARWATER MOUNTAINS-
410 PM PST TUE DEC 17 2024
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY ABOVE 4000 FEET...
* WHAT...SNOW EXPECTED ABOVE 4000 FEET. LIKELIHOOD OF MODERATE
IMPACTS FROM 3 TO 6 INCHES OF SNOW IS GREATER THAN 80 PERCENT, AND
UP TO A 20 PERCENT CHANCE OF ISOLATED MAJOR IMPACTS FROM 6 TO 10
INCHES OR MORE OF SNOW. WINDS GUSTING AS HIGH AS 40 MPH.
* WHERE...NORTHERN CLEARWATER MOUNTAINS.
* WHEN...UNTIL 10 AM PST WEDNESDAY.
* IMPACTS...FOR MODERATE IMPACTS FROM SNOW, EXPECT DISRUPTIONS TO
NORMAL ACTIVITIES. HAZARDOUS TRAVELING CONDITIONS. USE EXTRA
CAUTION WHILE DRIVING.
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.
IDZ006-181800-
/O.CON.KMSO.WW.Y.0058.000000T0000Z-241218T1800Z/
SOUTHERN CLEARWATER MOUNTAINS-
410 PM PST TUE DEC 17 2024
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
WEDNESDAY ABOVE 4000 FEET...
* WHAT...SNOW EXPECTED ABOVE 4000 FEET. 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 40 PERCENT. WINDS GUSTING AS HIGH AS
45 MPH.
* WHERE...US HIGHWAY 12 FROM POWELL TO LOLO PASS, DIXIE AND ELK CITY.
* WHEN...UNTIL 10 AM PST WEDNESDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE TUESDAY EVENING AND WEDNESDAY 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.
MTZ001-181800-
/O.CON.KMSO.WW.Y.0058.000000T0000Z-241218T1800Z/
KOOTENAI/CABINET REGION-
510 PM MST TUE DEC 17 2024
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
WEDNESDAY...
* WHAT...MIXED PRECIPITATION EXPECTED. LIKELIHOOD OF MINOR TO
MODERATE IMPACTS FROM AROUND 1 TO 3 INCHES OF SNOW IS 80 PERCENT,
AND 3 TO 6 INCHES OF SNOW IS 40 PERCENT. ICE ACCUMULATIONS AROUND
A LIGHT GLAZE. WINDS GUSTING AS HIGH AS 40 MPH.
* WHERE...HIGHWAY 2 KALISPELL TO LIBBY, HIGHWAY 37 EUREKA TO LIBBY,
HIGHWAY 93 EUREKA TO WHITEFISH, AND HIGHWAY 56 BULL LAKE ROAD.
* WHEN...UNTIL 11 AM MST WEDNESDAY.
* IMPACTS...TRAVEL COULD BE DIFFICULT. THE HAZARDOUS CONDITIONS
COULD IMPACT THE TUESDAY EVENING AND WEDNESDAY MORNING COMMUTES.
GUSTY WINDS COULD BRING DOWN TREE BRANCHES.
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.
BE PREPARED FOR SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE
DRIVING. IF YOU ARE GOING OUTSIDE, WATCH YOUR FIRST FEW STEPS TAKEN
ON STAIRS, SIDEWALKS, AND DRIVEWAYS. THESE SURFACES COULD BE ICY AND
SLIPPERY, INCREASING YOUR RISK OF A FALL AND INJURY.
MTZ003-181800-
/O.CON.KMSO.WW.Y.0058.000000T0000Z-241218T1800Z/
FLATHEAD/MISSION VALLEYS-
510 PM MST TUE DEC 17 2024
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
WEDNESDAY...
* WHAT...MIXED PRECIPITATION EXPECTED. LIKELIHOOD OF MINOR TO
MODERATE IMPACTS FROM AROUND 1 TO 3 INCHES OF SNOW IS 80 PERCENT,
AND 3 TO 6 INCHES OF SNOW IS 20 PERCENT. ICE ACCUMULATIONS AROUND
A LIGHT GLAZE.
* WHERE...FLATHEAD VALLEY, MISSION VALLEY, POLSON, AND FLATHEAD LAKE.
* WHEN...UNTIL 11 AM MST WEDNESDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE TUESDAY EVENING AND WEDNESDAY MORNING
COMMUTES.
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.
MTZ004-181800-
/O.CON.KMSO.WW.Y.0058.000000T0000Z-241218T1800Z/
LOWER CLARK FORK REGION-
510 PM MST TUE DEC 17 2024
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
WEDNESDAY ABOVE 4000 FEET...
* WHAT...SNOW EXPECTED ABOVE 4000 FEET. LIKELIHOOD OF MINOR TO
MODERATE IMPACTS FROM AROUND 1 TO 3 INCHES OF SNOW IS 80 PERCENT,
AND 3 TO 6 INCHES OF SNOW IS 40 PERCENT. WINDS GUSTING AS HIGH AS
45 MPH.
* WHERE...I-90 LOOKOUT PASS TO HAUGAN AND EVARO HILL.
* WHEN...UNTIL 11 AM MST WEDNESDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE TUESDAY EVENING AND WEDNESDAY MORNING
COMMUTES, ESPECIALLY OVER HIGHER PASSES. GUSTY WINDS COULD BRING
DOWN TREE BRANCHES.
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.
MTZ006-181800-
/O.CON.KMSO.WW.Y.0058.000000T0000Z-241218T1800Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
510 PM MST TUE DEC 17 2024
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
WEDNESDAY...
* WHAT...SNOW EXPECTED. LIKELIHOOD OF MODERATE IMPACTS FROM 3 TO 6
INCHES OF SNOW IS 90 PERCENT, AND UP TO A 50 PERCENT
CHANCE OF ISOLATED MAJOR IMPACTS FROM 6 TO 10 INCHES OR MORE OF
SNOW. WINDS GUSTING AS HIGH AS 55 MPH.
* WHERE...HIGHWAY 93 SULA TO LOST TRAIL PASS AND LOLO PASS.
* WHEN...UNTIL 11 AM MST WEDNESDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE TUESDAY EVENING AND WEDNESDAY MORNING
COMMUTES, ESPECIALLY OVER HIGHER PASSES. GUSTY WINDS COULD BRING
DOWN TREE BRANCHES.
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.
OUTDOOR RECREATIONALISTS SHOULD BE PREPARED FOR WINTER CONDITIONS.
SNOWFALL COULD IMPACT ROADS AND COLD TEMPERATURES MAY RESULT IN
HYPOTHERMIA.
MTZ043-181800-
/O.CON.KMSO.WW.Y.0058.000000T0000Z-241218T1800Z/
POTOMAC/SEELEY LAKE REGION-
510 PM MST TUE DEC 17 2024
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
WEDNESDAY...
* WHAT...SNOW EXPECTED. 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 30 PERCENT. WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...HIGHWAY 83 SEELEY LAKE TO CONDON, HIGHWAY 200 BONNER TO
GREENOUGH, AND I-90 EAST MISSOULA TO BEARMOUTH.
* WHEN...UNTIL 11 AM MST WEDNESDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE TUESDAY EVENING AND WEDNESDAY MORNING
COMMUTES. GUSTY WINDS COULD BRING DOWN TREE BRANCHES.
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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