Posted: Oct 25, 2012 8:54 AM by Mike Rawlins - MTN News
For several days, a deep trough of low pressure along the Pacific Coast has kept Montana cold and snowy.
Upper-level disturbances have been responsible for the snow showers that have dusted the region with a wintry blanket.
This will continue for another day or two as an upper low continues to sit and spin off the coast of Washington.
Another disturbance will arrive Wednesday night and bring scattered snow showers to north central Montana into Thursday.
I'm not expecting a significant snowfall from this, but the lower elevations could pick up an inch or two of fresh snow, with up to 6" in the mountains.
As we look ahead, forecast models show a pattern change for the weekend.
That upper-level trough will move east into the central U.S., while a weak ridge of high pressure will build over the West.
This will allow for warmer air to return to Montana, with highs reaching the 50s over the weekend and into next week.
However, the west/northwest flow aloft will keep things unsettled for Big Sky Country.
Spotty rain showers will be possible Sunday - Tuesday as weak storm systems affect the Pacific Northwest.