600
WWUS45 KMSO 231719
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1019 AM MST TUE DEC 23 2025
MTZ043-232100-
/O.EXB.KMSO.WW.Y.0051.000000T0000Z-251223T2100Z/
POTOMAC/SEELEY LAKE REGION-
1019 AM MST TUE DEC 23 2025
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 2 PM MST THIS AFTERNOON
* WHAT...MIXED PRECIPITATION EXPECTED. THERE IS A LIKELIHOOD OF
MINOR TO MODERATE WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS
UP TO ONE INCH AND ICE ACCUMULATIONS AROUND A LIGHT GLAZE.
* WHERE...I-90 EAST MISSOULA TO BEARMOUTH, HIGHWAY 83 SEELEY LAKE TO
CONDON, AND HIGHWAY 200 BONNER TO GREENOUGH.
* WHEN...UNTIL 2 PM MST THIS AFTERNOON.
* IMPACTS...FOR MODERATE WINTER WEATHER IMPACTS, 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-MTZ006-231900-
/O.CON.KMSO.WW.Y.0051.000000T0000Z-251223T1900Z/
SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS-
1019 AM MST TUE DEC 23 2025 /919 AM PST TUE DEC 23 2025/
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST /11 AM
PST/ TODAY...
* WHAT...MIXED PRECIPITATION EXPECTED. THERE IS A LIKELIHOOD OF
MODERATE WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS UP TO
ONE INCH AND ICE ACCUMULATIONS AROUND A LIGHT GLAZE. MOUNTAIN
PASSES WILL SEE 2 TO 4 INCHES OF NEW SNOW.
* WHERE...DIXIE, ELK CITY, LOLO PASS, HIGHWAY 12 LOWELL TO LOLO
PASS, AND HIGHWAY 93 SULA TO LOST TRAIL PASS.
* WHEN...UNTIL NOON MST /11 AM PST/ TODAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS.
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.
IDZ009-010-231900-
/O.CON.KMSO.WW.Y.0051.000000T0000Z-251223T1900Z/
WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-
1019 AM MST TUE DEC 23 2025
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY
* WHAT...MIXED PRECIPITATION EXPECTED. THERE IS A LIKELIHOOD OF
MINOR TO MODERATE WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS
UP TO ONE INCH AND ICE ACCUMULATIONS AROUND A LIGHT GLAZE IN THE
VALLEYS. MOUNTAIN PASSES WILL SEE 2 TO 5 INCHES OF NEW SNOW.
* WHERE...LEMHI PASS, BANNOCK PASS, HIGHWAY 93 LOST TRAIL PASS TO
GIBBONSVILLE, SHOUP, SALMON, WILLIAMS CREEK SUMMIT, AND HIGHWAY 28
TENDOY TO LONE PINE.
* WHEN...UNTIL NOON MST TODAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS.
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.
MTZ005-231900-
/O.CON.KMSO.WW.Y.0051.000000T0000Z-251223T1900Z/
MISSOULA/BITTERROOT VALLEYS-
1019 AM MST TUE DEC 23 2025
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY
* WHAT...FREEZING RAIN EXPECTED. THERE IS A LIKELIHOOD OF MODERATE
WINTER WEATHER IMPACTS. ICE ACCUMULATIONS OF A LIGHT GLAZE.
* WHERE...BITTERROOT VALLEY AND MISSOULA.
* WHEN...UNTIL NOON MST TODAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS DURING THE TUESDAY
MORNING COMMUTE, ESPECIALLY OVER BRIDGES, AND IN THE BITTERROOT
VALLEY.
* ADDITIONAL DETAILS...THE HIGHEST RISK FOR FREEZING RAIN OR WHEEL
TRACK GLAZING IS IN THE BITTERROOT VALLEY THROUGH 1130 AM.
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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