The reason for the uptick in human-triggered avalanches this winter: persistent weak layers in the snowpack.
Carmichael pointed to a tree that fell across one of the riverside campground spots, taking out a fence. There’s another on the opposite side of the path, branches strewn across an open patch of snow. They’re among the 1,000 high-priority trees the city wants to remove due to safety concerns.
Usually, the Snow Glacier and Skilak lakes release every two or three years. Both at the same time is unprecedented.
A culvert collapse closed the road at Mile 8 from 9 p.m. Friday until one lane reopened at 10 a.m. Sunday. The culvert was washed out by heavy snowmelt.
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