Southern Gallatin
Many slick roofs shed this winter's snow with the above-freezing temperatures. There are some impressive fracture lines at the ice rink in Bogert Park in Bozeman. Photo: GNFAC
Forecast link: GNFAC Avalanche Forecast for Mon Dec 26, 2022
Poor Structure above Hebgen Lake
Date
Activity
Skiing
We dug a pit on a SE facing hill at 9,000 feet above Hebgen Lake. We had no signs of instability on the trip up. Near the ridgeline we dug and tested the 85cm snowpack and got an ECTP26 at the interface of the F- weak facets and slab of snow above. The structure was poor, but the snow was relatively stable. It would be possible to trigger a slide in an area where the snowpack is thinner and weaker, and I expect instability to increase with more snowfall.
Region
Lionhead Range
Location (from list)
Hebgen Lake
Observer Name
Doug Chabot
We dug a pit at 9,000 feet on a SE facing slope above Hebgen Lake. We found weak snow under a slab that broke with an ECTP26. Photo: GNFAC
Forecast link: GNFAC Avalanche Forecast for Wed Dec 21, 2022
Collapsing at Specimen Creek
Specimen Creek
Southern Gallatin
Code
Latitude
45.02650
Longitude
-111.04800
Notes
From obs: "Thin and variable snowpack in the Specimen Creek drainage. The Max depth was less than 100cm, and the minimum was the depth bare ground. Active wind loading on exposed ridges, multiple whumphs when skinning over wind loaded, low angle slopes. Decent skiing, albeit thin, on low angle W aspects from 8200’ down."
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year