Montana Department of Transportation

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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 KMSO 312036
WSWMSO

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
236 PM MDT FRI OCT 31 2014


IDZ005-MTZ004-011200-
/O.EXA.KMSO.WS.A.0007.141102T0000Z-141103T0000Z/
NORTHERN CLEARWATER MOUNTAINS-LOWER CLARK FORK REGION-
236 PM MDT FRI OCT 31 2014

...WINTER STORM WATCH IN EFFECT FROM SATURDAY EVENING THROUGH
SUNDAY AFTERNOON ABOVE 4500 FEET...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY EVENING THROUGH
SUNDAY AFTERNOON. 

* IMPACTS/TIMING: ACCUMULATING SNOW WILL RESULT IN DIFFICULT
  TRAVEL OVER MOUNTAIN PASSES. HUNTERS AND THOSE IN THE
  BACKCOUNTRY WILL EXPERIENCE RAW WINTER CONDITIONS. TIMING FOR
  THE MOST SIGNIFICANT SNOWFALL ACCUMULATIONS IS LATE SATURDAY
  THROUGH SUNDAY AFTERNOON.

* SNOW ACCUMULATIONS: 4-8 INCHES ABOVE 4500 FEET...LOCALLY MORE IN
  THE HIGHER TERRAIN.

* LOCATIONS IMPACTED INCLUDE...LOOKOUT PASS...EVARO HILL

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

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IDZ006-009-010-MTZ002-006-007-043-011200-
/O.CON.KMSO.WS.A.0007.141102T0000Z-141103T0000Z/
SOUTHERN CLEARWATER MOUNTAINS-WESTERN LEMHI COUNTY-
EASTERN LEMHI COUNTY-WEST GLACIER REGION-
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
POTOMAC/SEELEY LAKE REGION-
236 PM MDT FRI OCT 31 2014

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY AFTERNOON ABOVE 4500 FEET...

A WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY AFTERNOON. 

* IMPACTS/TIMING: ACCUMULATING SNOW WILL RESULT IN DIFFICULT
  TRAVEL OVER MOUNTAIN PASSES. HIGH ELEVATION VALLEYS IN
  SOUTHWEST MONTANA MAY ALSO RECEIVE ACCUMULATING SNOW IMPACTING
  TRAVEL. HUNTERS AND THOSE IN THE BACKCOUNTRY WILL EXPERIENCE RAW
  WINTER CONDITIONS. TIMING FOR THE MOST SIGNIFICANT SNOWFALL
  ACCUMULATIONS IS LATE SATURDAY THROUGH SUNDAY AFTERNOON.

* SNOW ACCUMULATIONS: 4-8 INCHES ABOVE 4500 FEET...LOCALLY MORE 
  IN THE HIGHER TERRAIN. 

* LOCATIONS IMPACTED INCLUDE...DIXIE...BANNOCK PASS...HIGHWAY 28 
  TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO 
  GIBBONSVILLE...LEMHI PASS...MARIAS PASS...HIGHWAY 93 SULA TO 
  LOST TRAIL PASS...LOLO PASS...BUTTE...GEORGETOWN LAKE...
  HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

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WWUS45 KTFX 312020
WSWTFX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
220 PM MDT FRI OCT 31 2014

MTZ008.015-044.046-048.050-052.055-011300-
/O.CON.KTFX.WS.A.0009.141102T0000Z-141103T0600Z/
BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-
CASCADE-CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON-
TOOLE-LIBERTY-EASTERN PONDERA-SOUTHERN ROCKY MOUNTAIN FRONT-
EASTERN TETON-JUDITH BASIN-JEFFERSON-BROADWATER-MEAGHER-GALLATIN-
INCLUDING THE FOLLOWING LOCATIONS...BIG HOLE PASS...
CHIEF JOSEPH PASS...DILLON...MONIDA PASS...BROWNING...
MARIAS PASS...CUT BANK...HAVRE...GREAT FALLS...KINGS HILL PASS...
BIG SANDY...FORT BENTON...FLESHER PASS...HELENA...LINCOLN...
MACDONALD PASS...ROGERS PASS...ENNIS...NORRIS HILL...
RAYNOLDS PASS...TWIN BRIDGES...SHELBY...CHESTER...CONRAD...
CHOTEAU...FAIRFIELD...STANFORD...BOULDER...BOULDER HILL...
ELK PARK PASS...HOMESTAKE PASS...WHITEHALL...TOWNSEND...
WHITE SULPHUR SPRINGS...BATTLE RIDGE PASS...BOZEMAN...
BOZEMAN PASS...TARGHEE PASS...WEST YELLOWSTONE
220 PM MDT FRI OCT 31 2014

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY EVENING...

A WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY EVENING. 

* TIMING AND MAIN IMPACT: A STRONG FALL STORM SYSTEM WILL AFFECT 
  MUCH OF NORTH-CENTRAL AND SOUTHWEST MONTANA WITH PERIODS OF 
  RAIN AND SNOW...HEAVY AT TIMES...SATURDAY EVENING THROUGH 
  SUNDAY EVENING. RAIN FALLING AT LOWER ELEVATIONS SATURDAY 
  NIGHT IS LIKELY TO CHANGE TO SNOW AT ALL ELEVATIONS EARLY 
  SUNDAY MORNING. THE TIMING OF THIS CHANGE FROM RAIN TO SNOW 
  WILL DETERMINE LOWER ELEVATION SNOW ACCUMULATION. 

* SNOW ACCUMULATIONS: MOUNTAIN AREAS ABOVE 5500 FEET HAVE THE 
  POTENTIAL FOR 5 TO 10 INCHES OF STORM TOTAL SNOWFALL...WITH 
  ISOLATED AMOUNTS OVER ONE FOOT. LOCATIONS BELOW 5500 FEET 
  COULD HAVE 1 TO 4 INCHES OF SNOW...DEPENDING ON THE TIMING 
  AT WHICH RAIN CHANGES TO SNOW. SNOWFALL AMOUNTS GREATER THAN 
  4 INCHES COULD OCCUR OVER PORTIONS OF THE NORTH-CENTRAL 
  PLAINS IF RAIN CHANGES TO SNOW EARLIER SATURDAY NIGHT.

* WINDS AND VISIBILITY: NORTH WINDS OF 10 TO 20 MPH ARE 
  POSSIBLE AT LOWER ELEVATIONS...WHILE 20 TO 30 MPH WINDS ARE 
  POSSIBLE IN THE MOUNTAINS. HEAVY WET SNOW COULD REDUCE 
  VISIBILITY TO LESS THAN ONE-HALF MILE AT TIMES.

* OTHER IMPACTS: TRAVEL MAY BECOME DIFFICULT WHILE SNOW
  ACCUMULATES OVER AREA PASSES. BRIDGES MAY BECOME SNOW COVERED
  AND ICY AT ALL ELEVATIONS. HEAVY WET SNOW COULD CAUSE ISOLATED
  POWER OUTAGES. LIVESTOCK MAY BE AT RISK OF EXPOSURE TO
  HYPOTHERMIA.

* LOCATIONS AFFECTED INCLUDE: FAIRFIELD...CHOTEAU...CHESTER... 
  WHITE SULPHUR SPRINGS...BATTLE RIDGE PASS...BOZEMAN... 
  BOZEMAN PASS...TARGHEE PASS...WEST YELLOWSTONE...STANFORD... 
  CONRAD... BOULDER...BOULDER HILL...ELK PARK PASS... 
  HOMESTAKE PASS... WHITEHALL...SHELBY...BIG SANDY... FORT 
  BENTON... BROWNING... MARIAS PASS...HAVRE...CUT BANK... 
  TOWNSEND... GREAT FALLS... KINGS HILL PASS...BIG HOLE PASS...
   CHIEF JOSEPH PASS...DILLON... MONIDA PASS...FLESHER PASS... 
  HELENA...LINCOLN...MACDONALD PASS...ROGERS PASS...ENNIS... 
  NORRIS HILL...RAYNOLDS PASS... TWIN BRIDGES

* 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 STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

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