fbpx Summit Lake | Central Oregon Avalanche Center (COAC)
RED FLAGS
Recent avalanche activity
Wind
Whumpfing sounds or cracks
Observation Date/Time:
Sat, Feb 20, 2021 - 1:00 PM
Reporter(s):
Cole Stuller
Location/Elevation:
Willamette Pass Area / 6300'
Report Type:
Snow Conditions   Avalanche Activity  
Travel Mode:
Snowmobile  
Temperature:
30°C
Sky Conditions:
Scattered (3/8 - 4/8)
Precip Type/Intensity:
Snow / S-1 Very light snow
Height of Snow (HS):
210 cm

Written Report:
In a small controlled area I rode a few small test slopes and noticed some signs of unstable snow conditions. I dug a test pit to examine the snow layers and found multiple unstable layers, the first being approximately 6” down which broke with just two light taps. The second layer was approximately 18” below the surface which broke at 6 light taps on the shovel. The third layer was about 40” down and took a few firm taps but did eventually break as well. I would consider it extreme risk as many small no consequence slides broke on us throughout the day just in riding small side hills above the roads.

Avalanche Report

Avalanche Type:
HS - Hard slab
Avalanche Size (relative to path):
R1 - Very small
Avalanche Size (destruction):
D1 - Relatively harmless (10m)
Avalanche Aspect:

Avalanche Slope Angle:
°
Avalanche Elevation:
'

Avalanche Report:
Multiple small slides were triggered throughout the day on small slopes with low consequences, large cracking and sliding of the upper layer was common but did not take too much to bring the second layer down as well which was enough to push a snowmobile down the hill.