Montana Department of Transportation

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Accidents and Incidents Report

Special Weather Statement

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.

WWUS85 KBYZ 140008


Special Weather Statement

National Weather Service Billings MT

508 PM MST Fri Dec 13 2019


Golden Valley-Southern Big Horn-Northern Carbon-Southwestern

Yellowstone-Musselshell-Northern Big Horn-Northeastern

Yellowstone-Northern Stillwater-

508 PM MST Fri Dec 13 2019


At 503 PM MST, areas of locally dense fog were reported across 

mainly Yellowstone and Musselshell counties. This fog is expected to 

continue through this evening. Be prepared for rapidly changing 

visibility that could drop below a quarter of a mile at times. 

Additionally, roads may become slick, especially on bridges and 


Locations impacted include...

Billings, Hardin, Roundup, Laurel, Lockwood, Huntley, Shepherd, 

Worden,  Crow Agency, Ballantine, Musselshell, Broadview, Lavina, 

Pompeys Pillar, Molt, Silesia, Acton and Klein.

LAT...LON 4635 10912 4674 10808 4547 10708 4547 10882

TIME...MOT...LOC 0005Z 145DEG 0KT 4579 10851 




WWUS85 KTFX 132130


Special Weather Statement

National Weather Service Great Falls MT

230 PM MST Fri Dec 13 2019



Including the cities of Big Hole Pass, Wisdom, Dillon, 

Chief Joseph Pass, Monida Pass, Wise River, Ennis, Norris Hill, 

Raynolds Pass, Twin Bridges, Virginia City, Bozeman, 

West Yellowstone, Battle Ridge Pass, Bozeman Pass, 

and Targhee Pass

230 PM MST Fri Dec 13 2019

...Light snow over Southwest MT tonight and Saturday...

Another band of light snow is forecast to affect the southern 

portions of Southwest MT from tonight through Saturday.

The most likely area to receive accumulating snowfall should be 

locations south of a line from Dillon to Big Sky. This includes 

areas around Monida Pass, Raynolds Pass and West Yellowstone.

Snow accumulations will generally average 1 to 3 inches, with the 

highest amounts towards the MT/Idaho border.