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Avalanche Advisory for Tuesday, March 20, 2018

Wind slab which varies in size and character across the terrain remains our primary avalanche problem. Present in all forecast areas and largest in Moderate rated areas, these slabs should be stubborn to a human trigger but could result in a large avalanche. Cold temperatures which slow bonding between recently formed layers lead us to believe that human triggered avalanches are still possible today, though natural avalanches will be unlikely. Surface snow is fairly firm and supportable in many areas, but softer pockets can be found as well. This spatial variability necessitates careful evaluation of the avalanche problem on your specific route, and that travelling one at a time on and below all avalanche terrain remains appropriate. “Low” avalanche danger does not mean “no” avalanche danger!

Huntington and Tuckerman Ravine Advisory Map

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Human-triggered avalanches, Hillman’s Highway & Gulf of Slides, 2018-3-10

On Saturday, March 10, 2018, two separate avalanche incidents were reported. During the previous 2 days, 14.5″ of snow was deposited at Hermit Lake from a nor’easter and the upslope snowfall that followed. This storm was accompanied by moderate winds that rose to the 60’s mph the afternoon before. Saturday’s advisory called for 4.5″ more […]