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 260839
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
239 AM MDT SUN APR 26 2015

WYZ098-270845-
/O.NEW.KBYZ.WW.Y.0014.150426T1200Z-150427T1200Z/
NORTHEAST BIGHORN MOUNTAINS-
INCLUDING THE LOCATIONS OF...BURGESS JCT
239 AM MDT SUN APR 26 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM THIS MORNING TO
6 AM MDT MONDAY...

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 AM THIS
MORNING TO 6 AM MDT MONDAY.

* TIMING...SNOW WILL DEVELOP THIS MORNING AND CONTINUE THROUGH
  THIS EVENING BEFORE TAPERING OFF LATE TONIGHT.

* SNOW AMOUNTS...4 TO 8 INCHES...GREATEST ALONG THE EAST SLOPES.

* IMPACTS...ANYONE PLANNING TO BE IN THE HIGH COUNTRY SHOULD BE
  PREPARED FOR WINTRY CONDITIONS TODAY. EXPECT POOR VISIBILITY AND
  AREAS OF SNOW COVERED ROADS. THIS INCLUDES HIGHWAY 14 THROUGH
  BURGESS JUNCTION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CHECK THE LATEST ROAD REPORTS BEFORE TRAVELING.

&&

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HTTP://WEATHER.GOV/BILLINGS


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WWUS45 KMSO 260507
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1107 PM MDT SAT APR 25 2015

IDZ010-262100-
/O.CON.KMSO.WW.Y.0030.000000T0000Z-150426T2100Z/
EASTERN LEMHI COUNTY-
1107 PM MDT SAT APR 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY. 

* IMPACTS/TIMING: SNOW SHOWERS THIS EVENING MAY CAUSE BRIEF 
  ACCUMULATIONS BUT THE MAIN FOCUS FOR SNOW WILL BE OVERNIGHT 
  AND THROUGH SUNDAY MORNING. 

* SNOW ACCUMULATIONS: 3 TO 5 INCHES ABOVE 5000 FEET. TRACE TO 1 
  INCH BELOW 5000 FEET. 

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY 
  TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...
  LEMHI PASS...SALMON

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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MTZ006-262100-
/O.CON.KMSO.WW.Y.0030.000000T0000Z-150426T2100Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
1107 PM MDT SAT APR 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY. 

* IMPACTS/TIMING: SNOW WILL ACCUMULATE ON LOLO AND LOST TRAIL 
  PASSES OVERNIGHT AND THROUGH SUNDAY MORNING. SLUSHY SNOW 
  ACCUMULATIONS MAY CREATE PERIODS OF DIFFICULT DRIVING 
  CONDITIONS THROUGH SUNDAY MORNING. 

* SNOW ACCUMULATIONS: 3 TO 6 INCHES.

* LOCATIONS IMPACTED INCLUDE...HIGHWAY 93 SULA TO LOST TRAIL 
  PASS...LOLO PASS

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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MTZ007-262100-
/O.CON.KMSO.WW.Y.0030.000000T0000Z-150426T2100Z/
BUTTE/BLACKFOOT REGION-
1107 PM MDT SAT APR 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT
SUNDAY. 

* IMPACTS/TIMING: SNOW SHOWERS WILL DEVELOP DURING THE AFTERNOON 
  WITH BRIEF ACCUMULATIONS ON MOUNTAIN PASSES THROUGH THE 
  EVENING. THE MAIN FOCUS FOR SNOW WILL BE OVERNIGHT AND DURING 
  SUNDAY MORNING WITH MODERATE TO HEAVY SNOW POSSIBLE FROM 6AM 
  TO 9AM SUNDAY MORNING. TRAVEL OVER HOMESTAKE PASS WILL BECOME 
  ESPECIALLY DIFFICULT DURING HEAVY SNOW SHOWERS SUNDAY MORNING. 

* SNOW ACCUMULATIONS: 4 TO 6 INCHES OVER HOMESTAKE AND MACDONALD 
  PASSES AND GEORGETOWN LAKE. 1 TO 3 INCHES FROM DEER LODGE TO 
  BUTTE. 

* LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 
  12 GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

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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MTZ005-261600-
/O.CON.KMSO.WW.Y.0030.000000T0000Z-150426T1600Z/
MISSOULA/BITTERROOT VALLEYS-
1107 PM MDT SAT APR 25 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM MDT
SUNDAY ABOVE 4000 FEET...

A WINTER WEATHER ADVISORY ABOVE 4000 FEET REMAINS IN EFFECT UNTIL
10 AM MDT SUNDAY. 

* IMPACTS/TIMING: PRECIPITATION WILL INTENSIFY OVER THE 
  BITTERROOT VALLEY TONIGHT...WITH RAIN EVENTUALLY MIXING WITH 
  OR CHANGING TO SNOW FOR MANY ELEVATIONS... ESPECIALLY ABOVE 
  4000 FEET. HEAVY WET SNOW COULD SNAP TREE LIMBS AND LEAD TO 
  POWER OUTAGES AT THOSE HIGHER ELEVATIONS. 

* SNOW ACCUMULATIONS: 4 TO 6 INCHES FOR LOCATIONS ON THE 
  PERIPHERY OF THE VALLEY. SLUSHY 1 TO 3 INCHES POSSIBLE IN 
  GRASSY AREAS AT THE VALLEY FLOOR ABOVE 3500 FEET... SUCH AS 
  HAMILTON AND DARBY. 

&&

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WWUS45 KTFX 260944
WSWTFX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
344 AM MDT SUN APR 26 2015

MTZ008-015-052-055-270000-
/O.NEW.KTFX.WW.Y.0019.150426T0944Z-150427T0000Z/
BEAVERHEAD-MADISON-JEFFERSON-GALLATIN-
344 AM MDT SUN APR 26 2015

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING
FOR ELEVATIONS ABOVE 6000 FEET...

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR ELEVATIONS ABOVE 6000 FEET FOR SNOW... WHICH
IS IN EFFECT UNTIL 6 PM MDT THIS EVENING.

* TIMING AND MAIN IMPACT: ACCUMULATING SNOW WILL SPREAD EAST
  ACROSS THE MOUNTAINS OF SOUTHWEST MONTANA THROUGH THIS
  MORNING...AND CONTINUE THROUGH MOST OF THE DAY. LIGHT
  ACCUMULATING SLUSHY SNOW WILL MAKE TRAVEL DIFFICULT...ESPECIALLY
  OVER MOUNTAIN PASSES. A MIX OF RAIN AND SNOW WITH LESS
  ACCUMULATION IS EXPECTED IN THE VALLEYS. PRECIPITATION WILL
  GRADUALLY DECREASE FROM THE WEST BEGINNING THIS AFTERNOON.

* SNOW ACCUMULATIONS: ABOVE 6000 FEET...A TOTAL OF 2 TO 4 INCHES
  IS MOSTLY EXPECTED...BUT UP TO 7 INCHES ARE POSSIBLE ON SOME
  PEAKS. BELOW 6000 FEET...UP TO 2 INCHES ARE POSSIBLE.

* ELEVATIONS: FOR ELEVATIONS ABOVE 6000 FEET.

* OTHER IMPACTS: WET SNOW COULD CAUSE DAMAGE TO SOME TREES.
  ISOLATED POWER OUTAGES ARE ALSO POSSIBLE.

* LOCATIONS AFFECTED INCLUDE: BIG HOLE PASS...MONIDA PASS...
  RAYNOLDS PASS...BOZEMAN PASS...NORRIS HILL...TARGHEE PASS...
  WEST YELLOWSTONE.

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

FOR THE LATEST ROAD CONDITIONS...PLEASE DIAL 5 1 1.

&&

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