Very widely propagating crown from the top of Alta Vista to Edith Creek, turning the corner and continuing up the creek walls. A second crown coming out of the creek the turning the corner and continuing towards Lower Cornice.
All total: I observed 12 D2 or greater wet slab avalanches and another 10 D1 west slabs. These likely occurred between Saturday night and early morning Monday. Avalanches in the below and near treeline bands on E-S-W aspects (i did not observe any northerly aspects during my tour).
Signs of Unstable Snow
Purpose: i went out today to observe the recent avalanche activity from two high elevation rain events in the West-South zone Saturday through Monday.
Terrain: Due to low visibility and high hazard, I kept the tour short and close to Paradise: I traveled out into the Edith Creek Basin, then across well below the Golden Gate bowls and down to 4th Crossing TH, then up the Valley Rd to Paradise.
Weather: Overcast to obscured skies. Very light to light rain. Turning moderate rain as I left the field. Winds increased at 2pm to Moderate gust Strong WNW.
Snowpack: The top 20-25cm of snow was wet with several pooling (very wet layers) below. Pooling layers interspersed with moist layers of small rounded grains. The 12/09 MF crust is still visible 90cm below the surface but breaking down and much softer than in past days.
Observed Avalanche Problem #1:
Several wetting fronts within the upper snowpack. The most consistent was about 50cm down and very wet.