Small skier-triggered and natural dry loose slides near Cooke City

Henderson Mountain
Cooke City
Code
L-AS-R1-D1-S
Elevation
9700
Aspect
NE
Latitude
45.05240
Longitude
-109.94500
Notes

From obs 4/16/22: "My partner and I observed relative instability (ECTP 14) on a thick ice crust on a SW-facing slope at the base of Henderson Ridge. In addition to the propagation, there was a fracture at the new snow interface roughly 10cm deep, which was noticeably less consolidated than the snow between it and the buried sun-crust. We did not witness any cracking or whumphing along the skin track and decided to ski a similar aspect.

As we quickly navigated across a steep, 33-degree slope, two small loose slides broke from under our cuts, each roughly 10' across and traveling 30'. Each of these broke on the shallower new snow that rendered a fracture in our ECT. "

The same day GNFAC forecaster witnessed a couple 3-4" deep, 30 foot wide very soft natural new snow slides.

Number of slides
4
Number caught
0
Number buried
0
Avalanche Type
Loose-snow avalanche
Trigger
Skier
R size
1
D size
1
Bed Surface
S - Avalanche released within new snow
Problem Type
New Snow
Slab Thickness
4.0 inches
Vertical Fall
50ft
Slab Width
30.00ft
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year