BOZEMAN – A weak disturbance lifting over a High-pressure ridge is producing some snow for far western and NW counties of Montana with the biggest travel impact over Lookout Pass on I-90 Tuesday afternoon with snow and snowpacked and icy roads.
SW Montana should remain mostly dry with only a slight chance for some mountain snow showers Wednesday morning and possibly again Thursday night into Friday morning.
This blocking High-pressure ridge pattern should begin to break down late weekend into early next week with a much better chance for more snow arriving by Tuesday through Thursday of next week.
Until then the overall weather pattern is dry with valley inversions.