"Rain on snow event with a strong atmospheric river flow into PNW/BC/ID/MT/WY. Rain/snow lines get pushed to higher elevations with more rain than snow. It's a long wait for UT/CA/AZ/NM/Southern CO." - Chris Tomer Forecast Rain/Snow Line Elevations: Crystal Mountain, WA: Up to 8,000'+ Revelstoke, BC: Up to 4500'/1,350m Whitefish, MT: Up to 8500′ Jackson Hole, MT: Up to 9,000′ Brundage, ID: Up to 9,000′
The National Weather Service is making no promises the forecast is currently "low to moderate confidence" but the agency says that a low pressure system is moving down from Alaska and should be impacting the West Coast with rain by Friday, likely starting in the North Bay. The storm system is being called an atmospheric river, and meteorologists say that parts of Northern California and the southern Oregon coast are the most likely to see heavy rainfall by the weekend.
