Observation: Powder Park

Observation Date
12/19/2021
Observer Name
John Mletschnig
Region
Salt Lake » Big Cottonwood Canyon » Mill D North » Powder Park
Location Name or Route
Mill D North - Powder Park I
Red Flags
Red Flags
Recent Avalanches
Collapsing
Poor Snowpack Structure
Red Flags Comments
We dug in the Powder Park-I area shortly after having a very large woomph. 12/09 facet burial interface was the culprit. HS 140cm. 9000,' 25 degrees, N. At this elevation/location the lower snowpack is still very weak but the gradient has moderated and the facets are rounding... at least here. The 10cm span around weak layer interface was a 0.5 deg C change. The Surface slab is getting stiffer by the day and avalanche will become less frequent... but all you have to do is find the right spot(trigger point on the slab) and youve got a very well connected avalanche!
Avalanche Problem #1
Problem
Persistent Weak Layer
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates