A snow gust warning was also issued in the Great Falls area until 7:30 p.m.
A snow gust is an intense, short-lived heavy snowfall that leads to a rapid reduction in visibility and is often accompanied by gusty winds. According to the National Weather Service (NWS), they can be characterized by a main gust or multiple gusts.
The NWS reports that a dangerous gust of snow stretched along a line stretching from 15 miles west of Big Sandy to 6 miles north of Black Eagle to Great Falls, up to 8 miles east of Cascade, and stretching 80 miles per hour to it Moving east.
People are asked to slow down or delay the journey as visibility can suddenly drop to almost zero in heavy snow and icy roads.
This warning covers the following highways:
- Interstate 15 between mile markers 246 and 290.
- Highway 200 between mile markers 0 and 18.
- Highway 87 between mile markers 4 and 84.
- Highway 89 between mile markers 53 and 71 and between mile markers 72 and 92.
Locations affected include Great Falls, Fort Benton, Cascade, Big Sandy, Belt, Geraldine, Parker School, Highwood, Agency, St. Pierre, Black Eagle, Sangrey, Carter, Floweree, Rocky Boy, Eden, Stockett, First Peoples Buffalo Jump State Park, Shonkin and Loma.
BIG FALLS, Mont. – A severe thunderstorm warning has been issued in the Great Falls area.
Severe thunderstorms were reportedly located along a line stretching from near Great Falls to near Cascade, moving east at 60 miles per hour.
The US National Weather Service Great Falls Montana says a trained weather observer just measured a gust of wind of 63 miles per hour southwest of Great Falls near Ulm at 5:56 p.m.
According to the National Weather Service, the warning was issued for Southwestern Chouteau County in north central Montana and Northern Cascade County in central Montana.
Locations affected include Great Falls, Cascade, Belt, Black Eagle, Highwood, Portage, Eden, Malmstrom Afb, Stockett, Tracy, First Peoples Buffalo Jump State Park, Centerville, Tower Rock State Park, Ulm, and Sand Coulee.
Additionally, the NWS says there is visibility of up to an eighth of a mile in the Helena area in snow and strong winds.