A series of storms will spread rain and heavy mountain snow across the Northwest and northern Rockies ahead of an Arctic outbreak, AccuWeather meteorologists say. The first of multiple storms will move from over the Pacific Ocean into the Northwest and British Columbia into Tuesday. "Snow levels will rise to 6,000 feet into Monday night across the Cascades as warm air is ushered into the region promoting a brief mix of rain and snow before colder air returns, dropping snow levels to 2,000 feet b