LEO Network
23 February 2023

Unstable snowpack causes heightened avalanche risk in Turnagain Pass this winter

This article discusses the heightened avalanche risk in Turnagain Pass, Alaska this winter due to an unstable snowpack. The snowpack contains two persistent weak layers, one from a crust of ice from early winter and one from buried surface hoar from mid January. These layers have caused a number of human-triggered avalanches in the pass. The risk is improving as the season progresses, but human-triggered avalanches are still possible. Sun exposure is also a factor in determining avalanche risk.


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Turnagain Pass, Alaska


Weather
Safety
Landslide / Avalanche