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 220829
WSWBYZ

URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
229 AM MDT Fri Sep 22 2017

MTZ067-068-230830-
/O.CON.KBYZ.WS.W.0011.000000T0000Z-170923T1200Z/
Absaroka/Beartooth Mountains-Crazy Mountains-
229 AM MDT Fri Sep 22 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* IMPACTS...Travel in the high country will be affected by 
  periods of heavy snowfall. Hunters and recreationists should 
  be prepared for dangerous winter conditions. 

* TIMING...Through tonight. Heaviest snowfall is expected through
  this morning.

* TOTAL SNOW ACCUMULATION...10 to 15 inches, greatest on 
  eastern slopes above 7000 feet in the Crazy Mountains. 10 to 
  20 inches, greatest above 8000 feet in the 
  Absaroka/Beartooth Mountains.

Precautionary/preparedness actions...

Be sure to have a winter emergency kit with you should you become
stranded in the back country. 

&&

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MTZ034-042-221800-
/O.EXA.KBYZ.WW.Y.0025.000000T0000Z-170922T1800Z/
Northern Stillwater-Golden Valley-
229 AM MDT Fri Sep 22 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT TODAY...

The National Weather Service in Billings has issued a Winter
Weather Advisory for Snow and Poor Travel Conditions...which is 
in effect until Noon MDT today. 

* IMPACTS...Travel may be impacted by periods of wet snowfall. 
  Expect periods of low visibility and slippery or slushy roads. 
 
* TIMING...through this morning.

* SNOW ACCUMULATION...2 to 3 inches.

Precautionary/preparedness actions...

Check road conditions and the forecast before traveling. Allow
extra time to reach destinations. 

&&

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MTZ040-065-221800-
/O.EXA.KBYZ.WW.Y.0025.000000T0000Z-170922T1800Z/
Northern Park-Livingston Area-
Including the locations of Livingston and Springdale
229 AM MDT Fri Sep 22 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT TODAY...

The National Weather Service in Billings has issued a Winter
Weather Advisory for Snow and Poor Travel Conditions...which is 
in effect until Noon MDT today. 

* IMPACTS...Travel may be impacted by periods of snowfall. Expect
  periods of low visibility and slippery or slushy roads. 
 
* TIMING...through this morning.

* SNOW ACCUMULATION...1 to 3 inches.

Precautionary/preparedness actions...

Check road conditions and the forecast before traveling. Allow
extra time to reach destinations. 

&&

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MTZ041-221800-
/O.CON.KBYZ.WW.Y.0025.000000T0000Z-170922T1800Z/
Northern Sweet Grass-
229 AM MDT Fri Sep 22 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
TODAY...

* IMPACTS...Travel may be impacted by periods of snowfall along 
  the Crazy Mountain foothills and higher points of US Highway 
  191 near Melville. Hunters and recreationists should be 
  prepared for winter weather conditions. 

* TIMING...through this morning. 

* SNOW ACCUMULATION...2 to 5 inches above 4500 feet. Highest 
  totals near Melville, with lesser accumulations near Big 
  Timber.

Precautionary/preparedness actions...

Check road conditions and the forecast before traveling. Allow
extra time to reach destinations. 

&&

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MTZ056-066-221800-
/O.CON.KBYZ.WW.Y.0025.000000T0000Z-170922T1800Z/
Red Lodge Foothills-Beartooth Foothills-
229 AM MDT Fri Sep 22 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
TODAY...

* IMPACTS...Travel may be impacted by periods of snowfall. 
  Hunters and recreationists should be prepared for winter 
  weather conditions. 

* TIMING...through this morning.

* SNOW ACCUMULATION...2 to 5 inches.

Precautionary/preparedness actions...

Check road conditions and the forecast before traveling. Allow
extra time to reach destinations. 

&&

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http://weather.gov/billings


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WWUS45 KMSO 212102
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
302 PM MDT Thu Sep 21 2017

MTZ006-007-222115-
/O.CON.KMSO.WW.Y.0027.170922T0300Z-170923T0600Z/
302 PM MDT Thu Sep 21 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO MIDNIGHT MDT FRIDAY NIGHT ABOVE 5000 FEET...

* Impacts/Timing: Snow will develop this evening and continue 
  into Friday evening, with accumulations possible down to 5000 
  feet. Brief periods of moderate to heavy snow will be possible 
  early Friday morning. Expect roads to become slippery with 
  changeable conditions over short distances. In addition, areas 
  of poor visibility are expected due to the combination of 
  falling snow and breezy winds. 

* Snow accumulations: 1 to 4 inches 5000 to 6000 feet. 5 to 10 
  inches snow are expected in the high elevations above 6000 feet,
  including over MacDonald and Homestake Passes. 

* Winds: Gusts to 30 mph will cause areas of low visibility, 
  especially on high mountain passes such as Homestake and 
  MacDonald. 

* Locations impacted include: Highway 93 Sula to Lost Trail 
  Pass, Lolo Pass, Butte, Georgetown Lake, Homestake Pass, and 
  MacDonald Pass

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IDZ009-010-222115-
/O.CON.KMSO.WW.Y.0027.170922T0000Z-170923T0600Z/
302 PM MDT Thu Sep 21 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS
EVENING TO MIDNIGHT MDT FRIDAY NIGHT ABOVE 5500 FEET...

* Impacts/Timing: Snow will develop this evening and continue 
  into Friday evening, with accumulations possible down to 5500 
  feet. Expect roads to become slippery over higher elevation 
  passes and backcountry roads. In addition, areas of poor 
  visibility are expected due to the combination of falling snow 
  and breezy winds. 

* Snow accumulations: 1 to 4 inches 5500 to 7000 feet. 5 to 10 
  inches are expected in the high elevations above 7000 feet, 
  including over Gilmore Summit, and Lost Trail, Bannock and Lemhi
  Passes. 

* Winds: Gusts as high as 30 mph will cause areas of low 
  visibility, especially on high mountain passes such as Gilmore 
  Summit. 

* Locations impacted include: Bannock Pass, Highway 28 Tendoy to 
  Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, and 
  Lemhi Pass

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WWUS45 KTFX 221536
WSWTFX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
936 AM MDT Fri Sep 22 2017

MTZ012-014-050.053-230600-
/O.CON.KTFX.WW.Y.0036.000000T0000Z-170923T0600Z/
Cascade-Central and Southern Lewis and Clark-Judith Basin-Fergus-
Jefferson-Broadwater-
936 AM MDT Fri Sep 22 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
UNTIL MIDNIGHT MDT TONIGHT FOR ELEVATIONS ABOVE 4500 FEET...

* Locations: For elevations above 4500 feet in Central MT.

* Timing: Periods of snow are expected through this evening.

* Accumulations: New snow accumulations of 2 to 4 inches are
  expected for elevations above 4500 feet.

* Impacts: Roadways may be snow covered and slippery at times.
  Some power outages or tree damage is possible. Visibility could
  be reduced to near one mile at times in heavier areas of snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor NOAA Weather Radio for the latest information, forecasts,
and statements.

&&

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MTZ008-015-054-055-230600-
/O.CON.KTFX.WW.Y.0036.000000T0000Z-170923T0600Z/
Beaverhead-Madison-Meagher-Gallatin-
936 AM MDT Fri Sep 22 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT
UNTIL MIDNIGHT MDT TONIGHT FOR ELEVATIONS ABOVE 5500 FEET...

* Locations: For elevations above 5500 feet in Southwest MT.

* Timing: Periods of snow are expected through this evening.

* Accumulations: New snow accumulations of 2 to 4 inches are
  expected for elevations above 5500 feet.

* Impacts: Roadways may be snow covered and slippery at times.
  Some power outages or tree damage is possible. Visibility could
  be reduced to near one mile at times in heavier areas of snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor NOAA Weather Radio for the latest information, forecasts,
and statements.

&&

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