SEATTLE (AP) — The latest storm to hit the Pacific Northwest brought flood warnings, the shutdown of a major mountain pass, school closures and icy roads. Interstate 90 over Snoqualmie Pass in Washington state’s Cascade mountains was closed Thursday and expected to remain closed until Saturday due to high avalanche danger, zero visibility, and blowing, drifting snow. Stevens Pass on U.S. 2, White Pass on U.S. 12 and Blewett Pass on U.S. 97 were also closed Thursday. Heavy rain and snowmelt were causing flooding concerns in western Washington and Oregon as the latest atmospheric river moved into the region. Flood advisories and warnings were in place Thursday and a flood watch was extended through Friday.