East Slopes North - Canadian Border to Lake Chelan
Jan. 4, 2018, 3:43 p.m. PST
Weather: Clear skies and blue bird Sun.
Snowpack: Heavily wind effected dry old snow surface above the Treeline with variable wind effect in the trees. Surface snow turning to wet on the more South facing terrain.
Area Description: Big kangaroo Gully
Avalanches: On 1-3-18 I observed an old D3 Avalanche debris field at the bottom run-out Zone of big kangaroo Gully which is a west-Southwest facing aspect above the highway 20 hairpin off of kangaroo Ridge .The Avalanche stopped and piled as the slope angle decreased with one arm of the Avalanche following a skiers right minor terrain gully running into the small trees. This was the largest Avalanche debris field that I have seen so far as a result of the most recent snow storm. It appears to have ripped out during the latter part of that storm as there was 4 in of the old storm snow within the debris field in protected areas. Also observed fresh and continual Point releases with pinwheeling in southerly facing aspect Cliff bands as solar gain affected those areas. 3mm surface Frost crystals observed in the west facing trees to 5,400 ft. Larger surface Frost crystals observed in the highway 20 Road fill areas above Early Winters Creek.
Observation by Heli-Free North Cascades None
Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an Avalanche? No