Observation: Public
Observation Details
Name:
Denis DuBoisObservation Date:
February 15, 2021Submitted:
February 15, 2021Zone or Region:
East CentralActivity:
Skiing/SnowboardingLocation:
Iron Mtn formationObserved Avalanches
Did you observe any avalanches?
YesAvalanche Type:
Soft SlabSize:
Size 1: Relatively harmless to peopleElevation:
4800Aspect:
NEComments:
Very small slides on ENE aspect provided empirical evidence of what we were seeing all day Monday, which is that the new weekend snow had no bonded at all to what it had fallen upon. The underlying surfaces varied by aspect and elevation, including icy crust, wind slab and a mystery interface atop more soft snow. We didn't dig. Slides A and B are no more than 30' wide with crowns of 30cm, some 2-stage crowns apparently stepping down through different phases of the storm snow or depositions as the wind shifted.Photo:
Signs of Unstable Snow
None reported
Observations
Slide C is smaller, at 3700' N aspect. The filtered sun came out for an hour in late morning, causing some surface cohesiveness at lower elevations (skin track photo) and snow to shed from trees, despite cold temps. We also saw tiny slides on low angle slopes, triggered by snow falling from trees. The cold smoke powder skiing on 30* slopes was heavenly at all elevations.
Media
