Montana Department of Transportation

Main Content

Accidents and Incidents Report

Winter Storm Warning/Watch/Advisory

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Note:  Be sure to pay close attention to the date and time of each warning.    
This document contains all warnings in the state so please read the
complete document.
 
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WWUS45 KBYZ 202126
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
226 PM MST SAT DEC 20 2014

MTZ067-212130-
/O.CON.KBYZ.WS.W.0015.141221T0100Z-141222T1900Z/
ABSAROKA/BEARTOOTH MOUNTAINS-
INCLUDING THE LOCATIONS OF...COOKE CITY
226 PM MST SAT DEC 20 2014

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO NOON MST MONDAY...

A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT FROM 6 PM
THIS EVENING TO NOON MST MONDAY.

* TIMING...SNOW WILL DEVELOP BY THIS EVENING. PERIODS OF HEAVY
  SNOWFALL WILL IMPACT THE WEST AND NORTHWEST FACING SLOPES OF THE
  BEARTOOTH AND ABSAROKA MOUNTAINS TONIGHT INTO MONDAY MORNING.
  THE HEAVIEST SNOWFALL IS EXPECTED LATE TONIGHT AND SUNDAY.

* IMPACTS...RECREATION IN THE HIGH COUNTRY WILL BE IMPACTED BY 
  ACCUMULATING SNOWFALL AND GUSTY WINDS. AVALANCHE DANGER MAY 
  ALSO INCREASE DUE TO THE HEAVY SNOWFALL.

* SNOW ACCUMULATION...12 TO 20 INCHES.

* WINDS...GUSTS TO 50 MPH ON THE EXPOSED SLOPES AND RIDGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS A SIGNIFICANT AMOUNT OF SNOW IS
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE.

&&

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HTTP://WEATHER.GOV/BILLINGS


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WWUS45 KGGW 202102
WSWGGW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GLASGOW MT
202 PM MST SAT DEC 20 2014


MTZ016-017-021-022-059.061-211100-
/O.NEW.KGGW.ZR.Y.0006.141221T1200Z-141221T1900Z/
CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-
PETROLEUM-GARFIELD-NORTHERN PHILLIPS-SOUTHWEST PHILLIPS-
NORTHERN VALLEY-
INCLUDING THE CITIES OF...MALTA...SACO...GLASGOW...FORT PECK...
HINSDALE...FRAZER...WINNETT...JORDAN...WHITEWATER...ZORTMAN...
OPHEIM
202 PM MST SAT DEC 20 2014

...FREEZING RAIN ADVISORY IN EFFECT FROM 5 AM TO NOON MST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT FROM 5 AM TO NOON MST SUNDAY. 

* TIMING...SUNDAY MORNING.

* ICE ACCUMULATIONS...LESS THAN ONE TENTH OF ONE INCH. 

* OTHER IMPACTS...ICE ON ROADWAYS WILL CAUSE TREACHEROUS DRIVING
  CONDITIONS AND MAY RESULT IN NUMEROUS ACCIDENTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS ARE STRONGLY ENCOURAGED TO RECONSIDER TRAVEL PLANS OR
TAKE AN ALTERNATE ROUTE. IF YOU MUST TRAVEL USE EXTREME CAUTION...
REDUCE YOUR SPEED...AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION. 

&&

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WWUS45 KMSO 201746
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1028 AM MST SAT DEC 20 2014

...ATMOSPHERIC RIVER TO BRING HEAVY MOUNTAIN SNOW...

.AN ATMOSPHERIC RIVER WILL BRING ABUNDANT MOISTURE TO THE
NORTHERN ROCKIES TONIGHT THROUGH LATE SUNDAY WITH PERIODS OF
MODERATE TO HEAVY MOUNTAIN PASS SNOWFALL. SNOW LEVELS WILL
INITIALLY BEGIN AS LOW AS 3000 FT THIS AFTERNOON THEN GRADUALLY
RISE TO NEAR 5000 FEET ON SUNDAY MORNING AND UP TO 6000 FEET ON
SUNDAY AFTERNOON...THUS SNOW WILL CHANGE OVER RAIN OR A RAIN AND
SNOW MIX FOR MANY LOWER ELEVATION PASSES ON SUNDAY MORNING.
PRECIPITATION WILL BECOME MORE SHOWERY ON SUNDAY NIGHT BUT WILL
CONTINUE FOR MANY LOCATIONS.

MTZ002-006-007-043-211200-
/O.UPG.KMSO.WS.A.0012.141221T0100Z-141222T1200Z/
/O.NEW.KMSO.WW.Y.0072.141221T0200Z-141222T1200Z/
WEST GLACIER REGION-BITTERROOT/SAPPHIRE MOUNTAINS-
BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION-
1028 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
5 AM MST MONDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND SLICK ROADS...WHICH IS IN EFFECT
FROM 7 PM THIS EVENING TO 5 AM MST MONDAY. THE WINTER STORM WATCH
IS NO LONGER IN EFFECT.

* * IMPACTS/TIMING: HEAVY WET SNOW WILL IMPACT AREA PASSES THIS
  EVENING THROUGH LATE SUNDAY. HEAVY SNOW FOLLOWED BY RAIN COULD
  MAKE MOUNTAIN ROADS VERY DIFFICULT OR DANGEROUS TO TRAVEL ON AT
  TIMES. LOLO AND LOST TRAIL PASSES WILL MOST LIKELY BE
  IMPACTED... WITH IMPACTS ALSO POSSIBLE AT HOMESTAKE...
  MCDONALD... AND MARIAS PASSES. MANY HIGHER ELEVATION LOCATIONS
  SUCH AS GEORGETOWN LAKE AND SEELEY LAKE MAY RECEIVE SEVERAL
  INCHES OF SNOW ALSO.

* SNOW ACCUMULATIONS: LOLO AND LOST TRAIL PASSES WILL BE MOST
  IMPACTED WITH EXPECTED SNOW ACCUMULATIONS OF 6-12 INCHES IN 24
  HOURS. HOMESTAKE... MCDONALD... AND MARIAS PASSES SHOULD SEE 2-8
  INCHES IN 24 HOURS.

* LOCATIONS IMPACTED INCLUDE...BAD ROCK CANYON...ESSEX...HIGHWAY 
  83 BIGFORK TO SWAN LAKE...MARIAS PASS...POLEBRIDGE...HIGHWAY 
  93 SULA TO LOST TRAIL PASS...LOLO PASS...BUTTE...GEORGETOWN 
  LAKE...HIGHWAY 12 GARRISON TO ELLISTON...HOMESTAKE PASS... 
  MACDONALD PASS...HIGHWAY 200 BONNER TO GREENOUGH...HIGHWAY 83 
  SEELEY LAKE TO CONDON...I-90 EAST MISSOULA TO BEARMOUTH

PRECAUTIONARY/PREPAREDNESS ACTIONS...


A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

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IDZ005-006-010-MTZ004-211200-
/O.UPG.KMSO.WS.A.0012.141221T0100Z-141222T1200Z/
/O.NEW.KMSO.WW.Y.0072.141220T2200Z-141222T1200Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
EASTERN LEMHI COUNTY-LOWER CLARK FORK REGION-
1028 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM MST /2 PM PST/
THIS AFTERNOON TO 5 AM MST /4 AM PST/ MONDAY ABOVE 4000 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND SLICK ROADS ABOVE 4000 FEET...
WHICH IS IN EFFECT FROM 3 PM MST /2 PM PST/ THIS AFTERNOON TO 5 AM
MST /4 AM PST/ MONDAY. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.

* * IMPACTS/TIMING: HEAVY WET SNOW TO IMPACT AREA PASSES TONIGHT
  THROUGH LATE SUNDAY. HEAVY SNOW FOLLOWED BY RAIN COULD MAKE
  MOUNTAIN ROADS VERY DIFFICULT OR DANGEROUS TO TRAVEL ON AT
  TIMES. LOOKOUT... LOLO... AND LOST TRAIL PASSES WILL MOST LIKELY
  BE IMPACTED. MANY HIGHER ELEVATION LOCATIONS SUCH AS ELK CITY...
  DIXIE... AND GILMORE SUMMIT IN CENTRAL IDAHO MAY RECEIVE
  SEVERAL INCHES OF SNOW ALSO.

* SNOW ACCUMULATIONS: LOOKOUT... LOLO... AND LOST TRAIL PASSES
  WILL BE MOST IMPACTED WITH EXPECTED SNOW ACCUMULATIONS OF 6-12
  INCHES IN 24 HOURS. ELK CITY... DIXIE... AND GILMORE SUMMIT MAY
  ALSO RECEIVE 3-6 INCHES IN 24 HOURS. PORTIONS OF THE SALMON
  RIVER VALLEY MAY ALSO SEE A SLUSHY INCH OR TWO OF SNOW MAINLY
  TONIGHT.

* LOCATIONS IMPACTED INCLUDE...DIXIE...ELK CITY...BANNOCK PASS...
   HIGHWAY 28 TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS 
  TO GIBBONSVILLE...LEMHI PASS...EVARO HILL

PRECAUTIONARY/PREPAREDNESS ACTIONS...


A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

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IDZ009-211200-
/O.NEW.KMSO.WW.Y.0072.141220T2200Z-141222T1200Z/
WESTERN LEMHI COUNTY-
1028 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
5 AM MST MONDAY ABOVE 4000 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND SLICK ROADS ABOVE 4000 FEET...
WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO 5 AM MST MONDAY.

* IMPACTS/TIMING:HEAVY WET SNOW TO IMPACT AREA MOUNTAINS TONIGHT
  THROUGH LATE SUNDAY. HEAVY SNOW FOLLOWED BY RAIN COULD MAKE
  MOUNTAIN ROADS VERY DIFFICULT OR DANGEROUS TO TRAVEL ON AT
  TIMES.

* SNOW ACCUMULATIONS: HIGHER ELEVATIONS SUCH AS WILLIAMS CREEK
  SUMMIT WILL BE MOST IMPACTED WITH SNOW ACCUMULATIONS 6-12 INCHES
  IN 24 HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...


A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

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WWUS45 KTFX 201839
WSWTFX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
1139 AM MST SAT DEC 20 2014

A MOIST PACIFIC WEATHER SYSTEM WILL BRING HEAVY MOUNTAIN SNOW AND
MIXED PRECIPITATION AT LOWER ELEVATIONS SATURDAY NIGHT THROUGH
EARLY MONDAY. TRAVEL OVER MOUNTAIN PASSES WILL BECOME DIFFICULT
ON SUNDAY WITH SNOW COVERED AND ICY ROADS. STRONG WINDS WILL IN
SOME AREAS WILL CAUSE REDUCED VISIBILITY AND ADDITIONAL
DIFFICULTY FOR HIGH PROFILE VEHICLES.

MTZ008-015-055-210645-
/O.UPG.KTFX.WS.A.0013.141221T0000Z-141222T1200Z/
/O.EXB.KTFX.WW.Y.0054.141221T0200Z-141222T1200Z/
BEAVERHEAD-MADISON-GALLATIN-
INCLUDING THE FOLLOWING LOCATIONS...BIG HOLE PASS...
CHIEF JOSEPH PASS...MONIDA PASS...RAYNOLDS PASS...
BATTLE RIDGE PASS...BOZEMAN PASS...TARGHEE PASS...
WEST YELLOWSTONE
1139 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
5 AM MST MONDAY FOR ELEVATIONS ABOVE 5500 FEET...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR ELEVATIONS ABOVE 5500 FEET FOR SNOW AND BLOWING
SNOW...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO 5 AM MST
MONDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

* TIMING AND MAIN IMPACT: SNOW WILL DEVELOP OVER SOUTHWEST 
  MONTANA LATE TONIGHT AND CONTINUE THROUGH MONDAY. TRAVEL MAY 
  BECOME DIFFICULT OVER MOUNTAIN PASSES WITH SNOW COVERED AND 
  ICY ROADS. 

* SNOW ACCUMULATIONS: 4 TO 8 INCHES OF SNOW ARE POSSIBLE OVER 
  MOUNTAIN PASSES...WITH UP TO 20 INCHES OF SNOW POSSIBLE OVER 
  THE MOUNTAINS.

* ELEVATIONS: FOR ELEVATIONS ABOVE 5500 FEET.

* LOCATIONS AFFECTED INCLUDE: BATTLE RIDGE PASS...BOZEMAN 
  PASS...TARGHEE PASS...WEST YELLOWSTONE... BIG HOLE PASS...
  CHIEF JOSEPH PASS...MONIDA PASS... RAYNOLDS PASS. 

* TO SEE A GRAPHICAL REPRESENTATION OF THIS HAZARD PLEASE VISIT
  OUR WEB PAGE AND CLICK ON THE DETAILED HAZARDS TAB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

FOR SPECIFIC ROAD AND TRAVEL CONDITIONS IN MONTANA...DIAL 5 1 1.

&&

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MTZ012-050-053-054-210645-
/O.EXB.KTFX.WW.Y.0054.141221T0200Z-141222T1200Z/
CASCADE-JUDITH BASIN-BROADWATER-MEAGHER-
INCLUDING THE FOLLOWING LOCATIONS...KINGS HILL PASS
1139 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
5 AM MST MONDAY FOR ELEVATIONS ABOVE 5500 FEET...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR ELEVATIONS ABOVE 5500 FEET FOR SNOW AND BLOWING
SNOW...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO 5 AM MST
MONDAY.

* TIMING AND MAIN IMPACT: SNOW WILL DEVELOP OVER THE LITTLE
  BELT...BIG BELT...AND ELKHORN MOUNTAINS LATE TONIGHT AND
  CONTINUE THROUGH EARLY MONDAY. MOUNTAIN PASSES WILL BECOME SNOW-
  COVERED AND ICY ON SUNDAY THROUGH EARLY MONDAY.

* SNOW ACCUMULATIONS: 4 TO 8 INCHES OF SNOW IS EXPECTED NEAR THE
  SUMMIT OF KINGS HILL PASS.

* WINDS AND VISIBILITY: WIND GUSTS OF 20 TO 30 MPH COULD REDUCE
  VISIBILITY BELOW 1/2 MILE AT TIMES IN BLOWING SNOW.

* ELEVATIONS: FOR ELEVATIONS ABOVE 5500 FEET.

* LOCATIONS AFFECTED INCLUDE: KINGS HILL PASS.

* TO SEE A GRAPHICAL REPRESENTATION OF THIS HAZARD PLEASE VISIT 
  OUR WEB PAGE AND CLICK ON THE DETAILED HAZARDS TAB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

FOR SPECIFIC ROAD AND TRAVEL CONDITIONS IN MONTANA...DIAL 5 1 1.

&&

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MTZ009-014-048-052-210645-
/O.EXT.KTFX.WW.Y.0054.141221T0200Z-141222T1200Z/
NORTHERN ROCKY MOUNTAIN FRONT-
CENTRAL AND SOUTHERN LEWIS AND CLARK-
SOUTHERN ROCKY MOUNTAIN FRONT-JEFFERSON-
INCLUDING THE FOLLOWING LOCATIONS...MARIAS PASS...FLESHER PASS...
MACDONALD PASS...ROGERS PASS...BOULDER HILL...ELK PARK PASS...
HOMESTAKE PASS
1139 AM MST SAT DEC 20 2014

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 7 PM THIS EVENING
TO 5 AM MST MONDAY FOR ELEVATIONS ABOVE 5000 FEET...

THE WINTER WEATHER ADVISORY FOR ELEVATIONS ABOVE 5000 FEET FOR
SNOW AND BLOWING SNOW IS NOW IN EFFECT FROM 7 PM THIS EVENING TO
5 AM MST MONDAY.

* TIMING AND MAIN IMPACT: SNOW WILL DEVELOP OVER THE ROCKY
  MOUNTAINS TONIGHT AND CONTINUE THROUGH EARLY MONDAY...GRADUALLY
  SHIFTING NORTH TO SOUTH. MOUNTAIN PASSES WILL BECOME SNOW
  COVERED AND ICY ON SUNDAY AND EARLY MONDAY.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES OF SNOW ARE EXPECTED OVER
  MOUNTAIN PASSES WITH 8 TO 16 INCHES POSSIBLE ABOVE PASS LEVEL.

* WINDS AND VISIBILITY: WIND GUSTS UP TO 60 MPH WILL PEAK EARLY 
  SUNDAY THROUGH FAVORED AREAS ALONG THE ROCKY MOUNTAIN FRONT. 
  VISIBILITY COULD DROP BELOW 1/2 MILE AT TIMES IN BLOWING 
  SNOW. 

* ELEVATIONS: FOR ELEVATIONS ABOVE 5000 FEET.

* LOCATIONS AFFECTED INCLUDE: MARIAS PASS...BOULDER HILL...ELK 
  PARK PASS...HOMESTAKE PASS...FLESHER PASS... MACDONALD 
  PASS...ROGERS PASS. 

* TO SEE A GRAPHICAL REPRESENTATION OF THIS HAZARD PLEASE VISIT 
  OUR WEB PAGE AND CLICK ON THE DETAILED HAZARDS TAB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

FOR SPECIFIC ROAD AND TRAVEL CONDITIONS IN MONTANA...DIAL 5 1 1.

&&

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