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Today (1/18/22) near Cooke City a couple inches of new snow fell. This light load of snow does not greatly increase the avalanche danger, but creates ...
We easily found a a freshly buried weak layer of surface hoar in Lionhead. It is widespread in the southern Gallatin and southern Madison Ranges and ...
1/18/22: The snowpack across the advisory area is generally stable and the expected snow won’t be enough weight to change this. However, new snow ...
1/18/22: The snowpack across the advisory area is generally stable and the expected snow won’t be enough weight to change this. However, new snow ...
Don’t discard your backcountry travel protocols on days like today when avalanches are unlikely. These protocols are what we use to hedge our bets ...
Don’t discard your backcountry travel protocols on days like today when avalanches are unlikely. These protocols are what we use to hedge our bets ...

GNFAC News

Our 2-page Season Summary is available here.

Our Annual Report for 2019-20 is available here.

Spring is here! Review this season's snowpack and avalanche activity in this brief summary.

Resources

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.

Placenames

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

Support

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