BELLINGHAM, Wash. (AP) — At least one person was missing and presumed dead as snow turned to rain and deluged the Pacific Northwest, causing flooding, landslides and avalanche danger in the mountains. Authorities say a man was swept away by floodwaters Friday and presumed dead west of Olympia, Washington. Portions of Washington state’s two major interstates — Interstate 90 and Interstate 5 — were closed Friday. Interstate 5 in the Chehalis area closed due to flooding but reopened Friday afternoon. The major route across Washington’s Cascades — I-90 over Snoqualmie Pass — closed Thursday because of avalanche danger and heavy snow along with Stevens Pass, White Pass, and Blewett Pass. All were likely closed until Sunday.