A group of skiers on the Throne in the northern Bridgers captured this natural avalanche in action. It broke approximately 100 ft wide and ran over 700 vertical feet. It was likely the result of heavy wind loading. Photo: J. Mancey
16-17
GNFAC Avalanche Forecast for Sat Feb 25, 2017
Snowpack and Avalanche Discussion
Bridger Range
Southern Madison, 2017-02-24
GNFAC Avalanche Advisory for Fri Feb 24, 2017
Snowpack and Avalanche Discussion
Madison Range Southern Gallatin Range
Lionhead area near West Yellowstone
The mountains around Big Sky and West Yellowstone have two distinct avalanche problems. The primary problem is wind loaded slopes.
GNFAC Avalanche Forecast for Thu Feb 23, 2017
Snowpack and Avalanche Discussion
Southern Madison Range Southern Gallatin Range Cooke City
Lionhead area near West Yellowstone
Wind loaded slopes are the main avalanche concern in the southern ranges. Earlier in the week, heavy snow and strong winds formed thick slabs on all aspects and elevations.
GNFAC Avalanche Advisory for Wed Feb 22, 2017
Snowpack and Avalanche Discussion
Southern Madison Range Southern Gallatin Range Cooke City Lionhead area near West Yellowstone
Yesterday morning a few inches of snow fell in the southern mountains (.3-.5” SWE).
Eric Knoff talks to a snowmobiler about the dangers of highmarking during a HIGH danger as winds rip and move lots of snow at the ridgeline. Photo: GNFAC
There were many avalanches on wind-loaded slopes in the Lionhead area. Lots of new snow (2.5" SWE) and very strong winds created a HIGH avalanche danger. Photo: GNFAC