Large Avalanche, Lionhead Range

Lionhead Ridge
Lionhead Range
Code
HS-AM-R3-D2.5-G
Elevation
9000
Aspect
NE
Latitude
44.71350
Longitude
-111.31600
Notes

The crown on this slide ranges from 4-6' deep. It occurred on a heavily wind loaded slope and broke on facets near the ground. It's a clear reminder that large avalanches are possible in the mountains near West Yellowstone.  Photo: GNFAC

Number of slides
1
Number caught
0
Number buried
0
Number killed
0
Avalanche Type
Hard slab avalanche
Trigger
Snowmobile
R size
3
D size
2.5
Bed Surface
G - Ground
Problem Type
Persistent Weak Layer
Slab Thickness
72.0 inches
Vertical Fall
200ft
Slab Width
150.00ft
Slab Layer Grain Type
Wind packed
Slab Thickness units
inches