National Geographic : 1982 Sep
Howling winds build a potential OutsideAnchorage,Alaska, a wind avalancheon Mount Stephen in the blastfrom an avalanchewrapped a van CanadianRockies' Yoho NationalPark around a tree as if it were a candy by loading it with drifting snow (above). wrapper (below). Its owner, away skiing, Windblown snow can form dangerously returnedto find it flattened to less than deep slabs on leeward slopes, afoot thick afterflying about 35 feet. A~'