An atmospheric river will bring the biggest rain storm so far this year to northern California and the Pacific Northwest, bringing the risk of flooding and landslides. Snow is even possible in Seattle this weekend. AccuWeather's Anna Azallion breaks down how much rain and snow is expected. #rain #atmosphericriver #snow #pnw #pnwlife #seattle #sanfrancisco #bayarea #weather #forecast #california #weathertok #accuweather