An anomalous upper-level low-pressure system dropping into the Northwest this afternoon will be responsible for the development of an early-season and major to potentially historic winter storm across portions of the Northern Rockies this weekend. According to wpc.ncep.noaa.gov

This storm will bring very heavy snowfall, high winds, blizzard conditions, and extreme impacts to travel. Western Montana is forecast to see the brunt of the snowfall, with as much as 1 to 3 feet (locally more) possible. This system will also usher in a very cold airmass, at least for September standards, with daytime highs 20 to 30+degrees below normal. According to NOAA

Many daily record low maximum temperature records are possible this weekend, especially across the northern Great Basin/Rockies, and California. Also according to NOAA

Read more HERE

New Weather Graphic Issued: Probability 12+. More info at https://t.co/9noRXI71Sk. #mtwx pic.twitter.com/FcnTvnAwKp

— NWS Great Falls (@NWSGreatFalls) September 27, 2019

Source and credits: noaa.gov / weather.gov/  iTrucker  / Mario Pawlowski