Observation: Summit

Location: Seward Highway

Route & General Observations

Below are a few photos taken on 3/15 of the avalanche cycle that occurred 3/10-3/14. It is tough to tell exactly when these slides ran but it seems it was sometime mid-storm or at the tail end of the storm.

Many of these avalanches are D3-4 in size – very large – and look to have crown faces in the 4-8′ range. These are on all four aspects and between 2,500′ and 5,000′. Judging from the slab depths and wide propagation (around terrain features etc), it is suspect that the weak layer was the storm snow/old snow interface. This interface sits just above a crust formed in late Feb.

Photos & Video
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