Avalanche

Avalanche Peak

Zachary MillerGalena Summit & Eastern Mtns
View on map
Observation photo 1

Quick report

Today we enjoyed deep trail breaking and found a rapidly settling snowpack. There was generally 2-3 ft of unconsolidated storm snow sitting on top of a couple of crusts left over from earlier in December. These crusts were found on all aspects and elevations that we travelled. So far, it seems like the buried weak layers were tolerating the last pulse of moisture better than the previous two... but we kept our travel to low angle slopes to maintain a healthy margin for error.

We observed two natural avalanches mid-slope on Gladiator Peak's W aspect. Although we did not experience any collapses today, a party we encountered did mention local (~25 ft) collapsing along a rocky ridgeline.

Weather

Air Temp
30
Cloud Cover
overcast
Wind Loading
light
Rain Elevation
7500
Recent Snowfall
50+
Snow Avail For Transport
large amounts

The cloud deck lifted to ~11000' around 1130am with hints of sunshine and light SW winds blowing snow along exposed ridgelines.

Snowpack

New snow (lots of it): We found 1.5 to 2.5 ft of new snow that had fallen since the previous day's rising rain lines. Above 8800', the new snow is primarily right side up and unconsolidated. Below 8800', the new snow felt more "upside down" and consolidated into a soft slab.

Crusts: Dec 17 and Dec 5 were observed on all aspects and at all elevations travelled today. These two crusts were generally separated by 4-6 inches (10-15cm) of moist rounding facets. Neither of these produced unstable results in testing today.

Avalanche

Size
D2
Aspect
W
Trigger
N
Elevation
9500 ft

We observed two natural avalanches mid-slope on Gladiator Peak's W aspect