Observation: Public
Observation Details
Name:
Susan FenderObservation Date:
March 18, 2023Submitted:
March 18, 2023Zone or Region:
West NorthActivity:
Skiing/SnowboardingLocation:
North Twin SisterObserved Avalanches
Did you observe any avalanches?
YesAvalanche Type:
Wet LooseSize:
Size 2: Could bury, injure, or kill a personElevation:
4500Aspect:
WComments:
Debris from a everal wet slides observed on the west aspect of the sisters range (both north and south). Observed from a distance while on the road around 4:30pm. Did not witness avalanches happen.Signs of Unstable Snow
None reported
Observations
My group and another group dug a few column tests at the base of North Twin’s north face, above tree line before the slope angle dramatically increases. Tests done at 1:15pm. Both groups separately found a 2-4” slab layer above graupel that cracked on 3rd swing from elbow on compression test and fully slid at 1st swing from shoulder. Chose to descend after compression test and not venture further up the face. Lots of wind loading surface features noted on north face.
Media
