GNFAC Avalanche Advisory for Mon Mar 16, 2015
Bridger Range Madison Range Gallatin Range
Lionhead Area near West Yellowstone Cooke City
It's official - the snowpack is coming unglued. It has been nearly 72 hours without a freeze and the snow is quickly losing cohesion and strength. Yesterday, skiers near Cooke City observed wet loose avalanches on steep, north facing slopes and the Bridger Bowl Ski Patrol kept the Ridge closed all day due to a weakening snowpack.
GNFAC Avalanche Forecast for Sun Mar 15, 2015
Bridger Range Madison Range Gallatin Range
Lionhead Area near West Yellowstone Cooke City
Today, snow conditions will be a lot worse than the avalanche danger. Although temps did not drop below freezing last night, a mostly clear sky and strong winds will allow for some surface cooling which will create a crust on the snow surface. This curst might be supportable on some slopes and breakable on others.
GNFAC Avalanche Advisory for Sat Mar 14, 2015
Bridger Range Madison Range Gallatin Range
Lionhead Area near West Yellowstone Cooke City
Wet loose avalanches will be today's primary concern. Instability will start on south and east facing slopes this morning and will move to west facing slopes as the day progresses.
By 11:00 a.m. waming temperatures and strong solar input softened the snow surface on sun exposed slopes. By early afternoon wet loose avalanches were begining to take place on south facing slopes. Photo GNFAC
Forecast link: GNFAC Avalanche Advisory for Sat Mar 14, 2015
GNFAC Avalanche Forecast for Fri Mar 13, 2015
Bridger Range Madison Range Gallatin Range
Lionhead Area near West Yellowstone Cooke City
GNFAC Avalanche Forecast for Thu Mar 12, 2015
Bridger Range Madison Range Gallatin Range
Lionhead Area near West Yellowstone Cooke City
GNFAC Avalanche Forecast for Wed Mar 11, 2015
Bridger Range Madison Range Gallatin Range
Lionhead Area near West Yellowstone Cooke City
This wet loose avalanche was seen yesterday on Silvertip, north of Silver Gate. It ran about 1,000 feet and was the second time this season it released a wet slide. Photo: J. Logan
Forecast link: GNFAC Avalanche Forecast for Wed Mar 11, 2015
GNFAC Avalanche Forecast for Tue Mar 10, 2015
Bridger Range Madison Range Gallatin Range Lionhead Area near West Yellowstone Cooke City
Everyone reading this advisory is probably on the edge of their seat wondering, “What’s the avalanche danger today?” Well, I won’t prolong the suspense, I’ll just tell you up front: the dry snow avalanche danger is LOW and avalanches are unlikely today.
GNFAC Avalanche Advisory for Mon Mar 9, 2015
Bridger Range Madison Range Gallatin Range
Lionhead Area near West Yellowstone Cooke City
The time sprung forward and so did our seasons - with highs forecasted in the mid to upper 40s F today, it will continue to feel like spring in the mountains.