Lionhead Range

Avalanche on Miller Ridge

Date
Activity
Skiing

Saw this avalanche today off miller ridge. Looks to be natural, soft slab 

Region
Cooke City
Location (from list)
Miller Ridge
Observer Name
Jake Mundt

Hebgen

Date
Activity
Skiing

I skied above hebgen today, and was surprisingly the only one out there. The clouds opened up enough to see numerous 2-4’ deep slides that occurred over the past week, on slopes down to 29-30 degrees. Many started quite low on the mountain. There were several places where 27-28 degree slopes had shattered into cracks without sliding. 
I dug a pit on an east aspect at about 8200’, and found 130 cm of snow. An ECT failed at ECTP 29 at the interface of the basal junk and newer snow, about 90 cm down. Normally I would see this as an encouraging sign, but my pit today was purely academic and I skied dad pow all day. I did not experience any collapsing today, in stark contrast to the 2-300 collapses I got Nordic skiing around the hebgen basin yesterday. 

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

Large whumps, Hebgen Lake

Hebgen Lake
Lionhead Range
Code
Elevation
8200
Aspect
NE
Latitude
44.83810
Longitude
-111.34300
Notes

 A small whumpf in the skin track was followed by a massive one a few minutes later. I can count on one hand the number of times I got whumpfs in a skin track...rare indeed. The second one was so big it had us both deeply concerned. We peeled off the skin track after deciding to not cross a gully and soon found debris from a sizeable avalanche that released a couple days ago about 500' above us. We dug in the flank and had 100cm of snow, 60 cm new from last week. The snowfall during the Avalanche Warning, doubled the depth and more than doubled the snow water equivalent of the snowpack. It was a large load and avalanches are breaking underneath the new snow.

Karl was using his 100 cm long Norwegian Battle Saw (pic)...a bit overkill.

Number of slides
0
Number caught
0
Number buried
0
Problem Type
Persistent Weak Layer
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year

Still Dangerous

Date
Activity
Skiing

Wind was calm and there was no new snow overnight. A small whumpf in the skin track was followed by a massive one a few minutes later. I can count on one hand the number of times I got whumpfs in a skin track...rare indeed. The second one was so big it had us both deeply concerned. We peeled off the skin track after deciding to not cross a gully and soon found debris from a sizeable avalanche that released a couple days ago about 500' above us. We dug in the flank and had 100 cm of snow, 60 cm new from last week. The snowfall during the Avalanche Warning, doubled the depth and more than doubled the snow water equivalent of the snowpack. It was a large load and avalanches are breaking underneath the new snow.

Karl was using his 100 cm long Norwegian Battle Saw (pic)...a bit overkill.

Region
Lionhead Range
Location (from list)
Hebgen Lake
Observer Name
Doug Chabot