Lionhead Range

Remote Triggered Avalanche in Lionhead

LIONHEAD AREA
Lionhead Range
Code
SS-AMr-R2-D2.5-O
Elevation
9340
Aspect
SE
Latitude
44.72690
Longitude
-111.31800
Notes

Remote triggered this avalanche at Lionhead. We were snowmobiling to the left of where the avalanche occurred. No one was caught.

Coordinates: 44°43'36.8"N 111°19'05.0"W

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Snowmobile
Trigger Modifier
r-A remote avalanche released by the indicated trigger
R size
2
D size
2.5
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
24.0 inches
Vertical Fall
400ft
Slab Width
300.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Remote Triggered Avalanche Lionhead

Date
Activity
Snowmobiling

Remote triggered this avalanche at Lionhead. We were snowmobiling to the left of where the avalanche occurred. No one was caught.

Coordinates: 44°43'36.8"N 111°19'05.0"W

Region
Lionhead Range
Location (from list)
LIONHEAD AREA
Observer Name
Ben

Widespread Collapsing in Cabin Ck

Date
Activity
Snowmobiling

We rode to the divide between Cabin and Teepee Creeks and then the fog/clouds set in and we couldn't go higher or further out.

From the moment we left the trail there was WIDESPREAD collapsing all day long. Snowpits were consistently 3-4 feet deep and the weak layer usually a foot above the ground. At higher elevations, I suspect that the weak layer is closer to 2 feet above the ground. Because of the widespread collapsing and very bad visibility, we were hyper-aware of slope angles so that we didn't inadvertently get on or under avalanche terrain.

Small slopes at low elevations were avalanching including some along Hwy 191 in YNP. It's always a bad sign when road cuts are avalanching. 

We stayed away from ALL AVALANCHE TERRAIN.

The good news - the powder is incredible, the coverage is excellent, and this snow is exactly what we need to heal the weak layer. Unfortunately, avalanche conditions have to get worse before they get better.

 

Region
Southern Madison
Location (from list)
Cabin Creek
Observer Name
Staples, A. Case, R Searle

Hebgen

Date
Activity
Skiing

I skied above hebgen today, and found some encouraging signs. No collapsing on the way up, but I did get a few small ones on the way out below 7k. A pit on an east facing slope at 8800’ had 90 cm of snow, and I got a poorly-defined propagation at ECTP16 in the big, granular facets that make up the base of the snowpack. The newer snow slab was quite cohesive, although there is a thin rain crust that formed yesterday afternoon. The lake is currently a slushy experience. 

Region
Lionhead Range
Location (from list)
Hebgen Lake
Observer Name
Sam Reinsel