GNFAC Avalanche Advisory for Sat Apr 11, 2015
Bridger Range Gallatin Range Madison Range
Lionhead area near West Yellowstone Cooke City
GNFAC Avalanche Advisory for Fri Apr 10, 2015
Bridger Range Gallatin Range Madison Range
Lionhead area near West Yellowstone Cooke City
GNFAC Avalanche Forecast for Thu Apr 9, 2015
Bridger Range Gallatin Range Madison Range
Lionhead area near West Yellowstone Cooke City
GNFAC Avalanche Advisory for Wed Apr 8, 2015
Bridger Range Gallatin Range Madison Range Lionhead area near West Yellowstone Cooke City
GNFAC Avalanche Forecast for Tue Apr 7, 2015
Bridger Range Gallatin Range Madison Range Lionhead area near West Yellowstone Cooke City
From an email "...attached photo of a soft slab avy triggered by a partner today. It was about 4-10" deep, and about 40' wide, and ran about 1000' vert packing a good wallop. It was on a northerly aspect around 9800'. Sort of a wind slab/ density inversion kind of scenario. Triggered by the second person down the slope." Photo: B. Fredlund
Two separate storms over the past five days have deposited up to 10" of snow around the Big Sky area. These two storms combined to equal 1.2" of SWE. Although the new snow is well bonded to the hard underlying ice crust, wind slabs remain a concern. Loose, wet avalanches will also be a concern when the sun comes out. Photo GNFAC
This photo of a small, sensitive wind slab on an East facing slope was taken yesterday (Sunday, April 4), near Cooke City. Winds are loading upper elevation slopes and instabilities are limited to these soft slabs. Photo: J. Logan
GNFAC Avalanche Forecast for Mon Apr 6, 2015
Bridger Range Gallatin Range Madison Range
Lionhead area near West Yellowstone Cooke City
GNFAC Avalanche Forecast for Sun Apr 5, 2015
Bridger Range Gallatin Range Madison Range
Lionhead area near West Yellowstone Cooke City