Probabilistic Heavy Snow and Icing Discussion
NWS Weather Prediction Center College Park MD
424 AM EDT Thu Oct 08 2020

Valid 12Z Thu Oct 08 2020 - 12Z Sun Oct 11 2020



Days 1-2...

The probability of heavy snow or significant icing is less than 10
percent.

Day 3...

...Pacific Northwest to the Northern Rockies...

Snow levels are expected to drop noticeably as an upper level
shortwave trough and its associated surface frontal front move
across the Northwestern CONUS Saturday and Saturday night.
Measurable snow is likely across the higher elevations of the
Olympics and WA-OR Cascades, with significant accumulations
possible in areas above 7,000 ft. Light-to-moderate
higher-elevation snowfall (heaviest above 7,500 ft) will then
spread into the Blue, Salmon River, Sawtooth, Bitterroot, Teton,
and Wind River mountain ranges late Saturday into early Sunday
morning.

The probability of significant icing is less than 10 percent.

Hurley