Avalanche: Twin Lakes Pass

Observer Name
John Lemnotis
Observation Date
Friday, December 10, 2021
Avalanche Date
Friday, December 10, 2021
Region
Salt Lake » Big Cottonwood Canyon » Twin Lakes Pass
Location Name or Route
lower heavens gate
Elevation
10,300'
Aspect
East
Slope Angle
35°
Trigger
Snowboarder
Trigger: additional info
Intentionally Triggered
Avalanche Type
Soft Slab
Avalanche Problem
Wind Drifted Snow
Weak Layer
Facets
Depth
14"
Width
250'
Vertical
400'
Comments
Touchy conditions in the backcountry today in avalanche country. Low visibility, moderate winds, and snowfall made for conservative decision making. Touring towards patsy marley from twin lakes pass I moved towards the ridge to look east. My partner and I had experience some cracking and collapsing earlier in the tour so we were not surprised when the slope released for a SS-Ar-U-R1-D2 on what was likely a density change. E facing slopes has received significant wind loading with cornice formation over the passed 2 days. The crown appeared to be 30-40cm deep running over rocky terrain with several covex rollers. Give wind loaded slopes and cornices plenty of space right now as they are touchy. I would recommend staying off of slopes >30 degrees right now on W-N-E aspects where old snow was present before the most recent storm. S aspects have enough snow to get down but are still very boney and rocks/trees are barely covered. Early season conditions still exist and now we have a couple of different slabs forming in our snowpack.
Coordinates