Lionhead Range

Small slide in lower elevation

Date
Activity
Snowmobiling

From FB message: "Small slide in lower elevation back by lionshead"

Region
Lionhead Range
Location (from list)
Lionhead Ridge

Small rider triggered Avalanche Lionhead

LIONHEAD AREA
Lionhead Range
Code
SS-AM-R1-D1
Aspect
S
Latitude
44.72920
Longitude
-111.32300
Notes

We saw this today after it happened. Looked like a snowmobile triggered it. I believe it is mostly south facing. Thanks. 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Snowmobile
R size
1
D size
1
Slab Thickness
12.0 inches
Vertical Fall
75ft
Slab Width
20.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Small Avalanche Lionhead today

Date
Activity
Snowmobiling

We saw this today after it happened. Looked like a snowmobile triggered it. I believe it is mostly south facing. Thanks. 

Region
Lionhead Range
Observer Name
Derek Haluptzok

Lionhead Super Bowl Sunday

Date
Activity
Snowmobiling

Pleasantly surprised with what we found at Lionhead. Snow depths are 120-150 cm (4-5 ft)

Good visibility let us look at a huge area today and dig snow pits in 6 places mostly looking at the mid to late January near surface facets. They are generally buried ~2 feet deep.

Locations, test scores, and hardness for this layer:

  • E aspect at 8700' ECTN, Fist hard
  • NE aspect at 8900' ECTP25, 4F hard
  • NW aspect at 9000' ECTP18, 4F hard
  • N aspect at 9000' ECTN, 4F hard
  • S aspect at 9000' nsf's have frozen perc columns over 10cm tall through the layer
  • E aspect at 9200' ECTX, 4F hard

We saw two recent shallow wind slab avalanches. No recent slides breaking deeper. The extra loading from wind could make this nsf layer more likely to fracture and produce an avalanche. Otherwise, it seems to be losing its sensitivity and will only improve this week with minimal loading.

Weak snow deeper in the snowpack has gained hardness and I doubt it will make avalanches unless it gets a massive load very quickly.

Snow conditions are 5-star

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

Emigrant Obs

Date
Activity
Skiing

Toured up into the basin below Emigrant to take a look around. HS varied from about 30 cm in wind stripped areas to 100cm around 8000 feet. On a NE aspect at the same elevation we found about 4in of new snow over a slab sitting on a faceted layer, which did not move easily in a hand shear. Heard from another party that they had no results in a pit in a similar location. Large cornice formation on E facing ridge lines. We stayed down low and had great supportable skiing. 

Region
Out of Advisory Area
Location (from list)
Emigrant Peak
Observer Name
E. Donahue