Summer SNOW?!

An unusually strong trough is swinging across the Northwestern United States this weekend and will cause winter-like conditions for some areas.
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NAM 500mb Vorticity

The northern Rockies will have the greatest impacts from this system; beginning tomorrow (Sunday) afternoon into Monday. The higher elevations (above 6,500 feet) of western Montana, northwestern Wyoming, and northern Idaho will see cold rain change to snow by Sunday evening.
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NAM Simulated Radar (Monday Morning)

The snowfall forecast is tricky right now because the models are having issues with the track of the associated low-pressure system. It does appear locations as low as 6,000 feet may see a rain/snow mixture, with locations around 6,500 feet picking up 1-2″. Locations higher in elevation may see upwards of 4-8″ with higher amounts. It is likely that Glacier National Park will see a rain/snow mix, too, so if you have vacation plans, please dress accordingly.
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NAM Snowfall Forecast Through Monday Night

Temperatures will be much below average. In the higher elevations, high temperatures will be in the 30’s. This is 20-30 degrees below average for this time of the year.
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GFS Temperature Anomalies

For those of you dreaming of snow during this hot summer, keep in mind, it’ll be winter before you know it. Keep checking back for our 2016-17 Winter Forecast that will be released in a few weeks. We have been working and researching diligently to publish the most accurate winter forecast for you all.