The goal of this afternoon’s tour was to find a safe vantage point to take photos of a large natural avalanche that was reported in Redcone Bowl. Unfortunately, visibility did not cooperate and I ended up focusing on evidence of persistent slab activity Below Treeline.
Clearing skies in the over Mammoth Lakes Basin.
Light to Moderate W winds at 9500′ in the forest.
Temp. 25 F at 9500′ and falling fast.
Sky obscured by lingering storm clouds and blowing snow on the crest.
Very light snowfall decreasing from afternoon into the evening.
|1||Past 24 hours||
Knoll North of McCloud Lake
|D2||SS||O-Old Snow||100 cm||N-Natural||Crown ranges from 50-100cm, is approx. 35m wide and connects around terrain features in steep rocky open forest. The avalanche ran approx. 30m downhill into low angle forest. There are two distinct failure planes. The first is a storm interface down 35cm. The lower failure plane is down 100cm at the top of the faceted snow buried on 20221201.||None|
BTL Mammoth Lakes Basin:
HST ~ 50 cm
1m of snow from this week’s storms sits on old faceted snow from late November’s dry spell.
Storm snow is still fist hard, but is moderately supportable (ski pen – 10- 20cm).
Surface form is wind broken precipitation particles.