A ski tourer south of Cooke City noted several small soft slab slab avalanches breaking in new snow – approx. 7” crown(s). None were deep and they all ran for short distances. Photo: J. Logan
16-17
Skier triggered slab on NW aspect, 8400ft in southern Madison Range. From e-mail: "Skier ski cut top of slope with extra caution, second ski cut, the slope peeled out wall to wall and ran the full length of the gully. Crown depth 35-50cms, ran on older sun/wind crust... High consequence terrain."
Forecast link: GNFAC Avalanche Forecast for Tue Mar 7, 2017
Skier triggered slab on NW aspect, 8400ft in southern Madison Range. From e-mail: "Skier ski cut top of slope with extra caution, second ski cut, the slope peeled out wall to wall and ran the full length of the gully. Crown depth 35-50cms, ran on older sun/wind crust... High consequence terrain."
GNFAC Avalanche Advisory for Mon Mar 6, 2017
Snowpack and Avalanche Discussion
Gallatin Range Madison Range Cooke City
Lionhead area near West Yellowstone
GNFAC Avalanche Forecast for Sun Mar 5, 2017
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
GNFAC Avalanche Advisory for Sat Mar 4, 2017
Snowpack and Avalanche Discussion
Bridger Range Madison Range Gallatin Range
Lionhead area near West Yellowstone Cooke City
Warm weather yesterday with little wind helped promote stability. Yesterday, Alex and I skied near Hebgen Lake and found the snow surface to be damp on all but northerly aspects.
GNFAC Avalanche Advisory for Fri Mar 3, 2017
Snowpack and Avalanche Discussion
Cooke City
The mountains around Cooke City have picked up over a foot of snow this week. In addition to consistent snowfall, strong winds have impacted the area. This combination has produced unstable conditions in isolated areas. On Wednesday, a skier south of town triggered two avalanches in non-wind loaded terrain, one remotely.