Montana Department of Transportation

Malcolm “Mack” Long, Director


View the Governor’s Coronavirus Task Force site for more information.

Main Content

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 080252


Special Weather Statement

National Weather Service Billings MT

852 PM MDT Fri May 7 2021



Northern Rosebud MT-Treasure MT-

852 PM MDT Fri May 7 2021


At 851 PM MDT, Doppler radar was tracking strong thunderstorms along

a line extending from 14 miles southeast of Mosby to 6 miles north of

Custer. Movement was northeast at 40 mph.

Half inch hail and wind gusts up to 50 mph are possible with these 

storms. Strong winds gusts may arrive well ahead of any rain or 


Locations impacted include...

Hysham, Ingomar and Bighorn. 


These storms may intensify, so be certain to monitor local radio

stations and available television stations for additional information

and possible warnings from the National Weather Service.


LAT...LON 4686 10706 4617 10698 4613 10747 4618 10747

      4619 10751 4625 10753 4627 10757 4629 10757

      4631 10761 4635 10761 4637 10765 4685 10771

      4685 10747 4686 10746

TIME...MOT...LOC 0251Z 243DEG 33KT 4688 10764 4622 10755 




WWUS85 KGGW 080331


Special Weather Statement

National Weather Service Glasgow MT

931 PM MDT Fri May 7 2021



Garfield MT-

931 PM MDT Fri May 7 2021


UNTIL 1015 PM MDT...

At 931 PM MDT, Doppler radar was tracking a strong thunderstorm 8

miles northeast of Jordan, moving northeast at 35 mph.

Half inch hail and winds in excess of 40 mph will be possible with

this storm.

This storm will remain over mainly rural areas of northeastern

Garfield County.

LAT...LON 4726 10671 4736 10693 4775 10657 4756 10627

TIME...MOT...LOC 0331Z 217DEG 31KT 4738 10675 


NWS Glasgow


WWUS85 KTFX 082012


Special Weather Statement

National Weather Service Great Falls MT

212 PM MDT Sat May 8 2021


Northern Rocky Mountain Front-Eastern Glacier-Chouteau-Toole-

Liberty-Eastern Pondera-Southern Rocky Mountain Front-

Eastern Teton-Fergus-

Including the cities of Logan Pass, Marias Pass, Browning, 

Heart Butte, Cut Bank, Fort Benton, Carter, Big Sandy, Shelby, 

Sunburst, Chester, Whitlash, Brady, Conrad, Bynum, Choteau, 

Augusta, Fairfield, Dutton, Lewistown, Winifred, 

Lewistown Divide, and Grass Range

212 PM MDT Sat May 8 2021

...Minor snow accumulations possible through Sunday morning...

Rain and rain showers will gradually change over to snow this

evening into the overnight. Up to 1 inch of snow accumulation is

possible across parts of the plains, mainly on grassy areas, but 

snow may fall at locally heavier rates this evening and tonight 

resulting in accumulations up to 2 inches along the Rocky Mountain

Front, with up to 4 to 6 inches in the mountains, including the 

Bears Paw, Big Snowy Mountains, Highwood, and Judith Mountains.

Roads will likely remain just wet for most areas on the plains, 

but snow-covered roads are possible where snow falls at heavier 

rates for an hour or more. Please use caution while traveling. 

Expect rapid changes in visibility and road conditions if you are 

traveling across the area this evening through the overnight