Welcome to the Gallatin National Forest Avalanche Center (GNFAC) web site. This site is brought to you by the Friends of the GNFAC, a non-profit supporting avalanche awareness and education through a partnership with the GNFAC.

Based in Bozeman, Montana, the GNFAC covers an area of approximately 6,000 mi2, including the Bridger, Gallatin, and Madison Ranges, the Lionhead area near West Yellowstone, and the mountains around Cooke City.

Danger Scale

GNFAC Instagram

Skiers up Beehive Basin yesterday observed wet loose avalanches in steep terrain. Similar slides will be possible today as temps warm and the sun comes out.In episode 3 of our series, “Get Avy Smart” 3 skiers walk through the decision making process. Some days the big lines go, some days they won’t. It’s up to you to decide because the “best days are the ones when you return home safely.” #gnfacobsOutside Cooke City we are finding deep snow that has a stable, strong structure. This bodes well for the future. Our only concerns at the moment are wind slabs near the ridges. #gnfacobsCooke City: Scotch Bonnet. We were finding 4' of snow on E and S facing slopes and 6' on N. All pits showed stability and we only saw one small cornice triggered slide all day. In this pit Eric found a few ice crusts (south facing slope), but no breaks in tests. We had no other signs of instability and we skied the slope. #gnfacobs


Some days the big lines will go, but other days they won't. Three skiers walk through the decision making process in Get Avalanche Smart - Episode 3: The Great One.

Dick Aspen hilariously stars in Get Avalanche Smart - Episode 2: Don't be like Dick. This is the second of four episodes promoting avalanche education by the Friends of the Avalanche Center.

The best $30 you’ll ever spend, guaranteed: Our Intro to Avalanches with Field Day. Two evenings of lectures plus a full day in the field digging pits and learning about rescue.

This is the first of 4 movies produced by the Friends of the Avalanche Center promoting Avalanche Education.


Weather Stations

Weather Stations provide the GNFAC forecasters with information on snowfall, wind and temps from around the region. The Weather Log summarizes this daily.

Avalanche Education

GNFAC partners with groups around the region to provide evening avalanche classes, plus full day and multi-day courses, including some weekend field days. All our class offerings, along with courses from other providers, are on our Education Calendar.


Use this map to find the locations of unfamiliar places mentioned in the advisory. Also take a look at our glossary of avalanche terms.


Donate to the Friends of GNFAC; or order DVDs or 'Snow Sense' avalanche safety handbook.