A map, available on the National Weather Service in Portland website, breaks down these advisories across the region. The Lowlands/Coast and Cascades region remains under a winter weather advisory, while the Oregon Coast Range is under a winter storm warning.

The combination of cool temperatures and showery weather has meant Willamette Valley snow is possible at lower elevations throughout this week.

On Wednesday at 1:25 a.m. a winter weather advisory was issued by the NWS Medford OR in effect until noon for Western Siskiyou County.