Avalanche

Schuylkill Ridge

Zach GuyGunnison
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Observation photo 1Observation photo 2Observation photo 3Observation photo 4

Quick report

Almost all of the steep terrain that we came near had avalanched during the 12/3 cycle, removing the mid-pack slab and concerns for failures near the ground. Those older layers did not produce signs of instability underfoot while breaking trail in undisturbed terrain, but continue to produce moderate to hard results in ECTs.  The most active issue was the 12/7 surface hoar layer buried about a foot deep. We triggered a couple of small soft slabs on this layer.   

Minor cracking on the 12/7 surface hoar layer, about 10" deep in a few wind-sheltered areas. No signs of instability on deeper weak layers.

Weather

Air Temp
Unseasonably mild
Cloud Cover
clear
Wind Loading
none
Recent Snowfall
0
Snow Avail For Transport
small smounts

Snowpack

NE aspect at 9700':   ECTP 9 and ECTN 6 on the 12/7 SH layer 25 cm deep.  ECTP 17 and ECTP 22 on the 11/30 facets (1mm, 4F) ~55cm deep, up to 1F hard.  PST 73/100 END

NE aspect at 10,600':  ECTP 26 on 11/16 facets (2 mm, F) ~80 cm deep, 1F hard.  No surface hoar here.  

Avalanche

Size
D1 R1
Type
SS
Count
2
Aspect
E
Trigger
AR
Elevation
11000 ft

Ski triggered a couple of shallow persistent slabs on the 12/7 surface hoar layer, about 10-12" deep.