Montana Department of Transportation

Main Content

Accidents and Incidents Report

Special Weather Statement

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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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WWUS85 KBYZ 220327
SPSBYZ

Special Weather Statement
National Weather Service Billings MT
927 PM MDT MON MAY 21 2018
 
MTZ029.031-035-220430-
Yellowstone MT-Northern Rosebud MT-Treasure MT-Musselshell MT-
927 PM MDT MON MAY 21 2018

...SIGNIFICANT WEATHER ADVISORY...

At 922 PM MDT, Doppler radar was tracking an area of strong 
thunderstorms across northeast Yellowstone and eastern Musselshell 
Counties moving east at 10 mph.

Frequent lightning, heavy rain and possibly some small hail are 
expected with these storms. 

Locations impacted include...
Hysham, Custer, Melstone, Ingomar, Vananda and Bighorn. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Localized torrential rainfall is occurring, and may lead to 
localized flooding. Do not drive your vehicle through flooded 
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4686 10700 4615 10686 4605 10774 4676 10791
      4676 10783 4678 10785 4679 10784 4680 10785
      4681 10784 4683 10786 4684 10788 4685 10787
      4686 10778 4685 10747 4686 10746
TIME...MOT...LOC 0322Z 261DEG 49KT 4633 10746 

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Tesar


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WWUS85 KGGW 212356
SPSGGW

Special Weather Statement
National Weather Service Glasgow MT
556 PM MDT MON MAY 21 2018
 
MTZ016-017-022-220100-
Garfield MT-Central and Southeast Phillips MT-
Central and Southern Valley MT-
556 PM MDT MON MAY 21 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PHILLIPS...WEST
CENTRAL GARFIELD AND SOUTHWESTERN VALLEY COUNTIES UNTIL 700 PM MDT...

At 556 PM MDT, Doppler radar was tracking a strong thunderstorm 9 
miles east of Devils Creek Recreation Area, or 31 miles northwest of 
Jordan, moving northeast at 10 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 southeastern
Phillips...west central Garfield and southwestern Valley Counties.

LAT...LON 4738 10743 4764 10765 4785 10735 4755 10704
TIME...MOT...LOC 2356Z 223DEG 9KT 4759 10746 

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AEH


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WWUS85 KTFX 220007
SPSTFX

Special Weather Statement
National Weather Service Great Falls MT
607 PM MDT MON MAY 21 2018

MTZ055-220030-
Gallatin-
607 PM MDT MON MAY 21 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN GALLATIN COUNTY...

At 606 PM MDT, a strong thunderstorm was located near Three Forks, or
28 miles west of Bozeman, moving northeast at 15 mph.

Pea size hail and wind gusts to 30 mph are possible with this storm.

Locations impacted include...
Three Forks and Willow Creek. 

This includes Highway 287 near mile marker 95.
 
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4574 11164 4579 11171 4589 11157 4580 11146
TIME...MOT...LOC 0006Z 237DEG 11KT 4581 11161 

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CC


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