SEATTLE (AP) — The National Weather Service in Seattle says an atmospheric river is bringing strong to damaging winds, heavy rain and some snow for western Washington and Oregon starting Thursday evening. The Seattle Times reports snow in the passes is expected as is potential river flooding. National Weather Service meteorologist Jeff Michalski says to expect heavy rainfall across the region through Saturday evening, with the heaviest amounts over the Olympic and Cascade mountains. Portland’s National Weather Service office warns that high seas and strong winds will make boating conditions hazardous starting Thursday night. Atmospheric river storms are fueled by long and wide plumes of moisture pulled in from the Pacific.