(Portland, OR) -- A strong atmospheric river is headed to the Pacific Northwest. It arrives today and will continue through Friday. Several inches of rain are expected at the Coast, in the Willamette Valley and the Cascade foothills. The Cascades will get snow, but then snow levels will move up to six-thousand feet bringing rain to most of the Cascades, except the highest mountains. Gusty winds are expected when the storm arrives. Large scale flooding is not expected.