Danger Scale

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Cooke City, Scotch Bonnet: We skied up a south facing slope to 10,000 and had shooting crackings in the new, wind drifted snow. The new snow is not bonding well to the old snow surface and it is breaking where it has been blown into slabs. We were careful on our ascent to avoid steep terrain. My inclinometer got a work out. #gnfacobs
Cooke City, Scotch Bonnet: We skied up a south facing slope to 10,000 and had shooting crackings in the new, wind drifted snow. The new snow is not bonding well to the old snow surface and it is breaking where it has been blown into slabs. We were careful on our ascent to avoid steep terrain. My inclinometer got a work out. #gnfacobs
Today (1/20/19) we went to the Bridgers to look at the stability of the new snow. Last night they got 8-10” of snow equal to 1-1.5” of snow water equivalent. Stability tests showed variable results (photo of ECTP14) and we had subtle cracking while breaking trail. The heavy new load of snow alone was enough to keep our objectives to low angle slopes. On the drive back we saw 1-2’ deep natural and skier triggered avalanches on Saddle Peak and Argentina bowl. These types of slides are easy to trigger for a couple days and will be larger with more wind loading and snow tonight. #gnfacobs #bridgers
Today (1/20/19) we went to the Bridgers to look at the stability of the new snow. Last night they got 8-10” of snow equal to 1-1.5” of snow water equivalent. Stability tests showed variable results (photo of ECTP14) and we had subtle cracking while breaking trail. The heavy new load of snow alone was enough to keep our objectives to low angle slopes. On the drive back we saw 1-2’ deep natural and skier triggered avalanches on Saddle Peak and Argentina bowl. These types of slides are easy to trigger for a couple days and will be larger with more wind loading and snow tonight. #gnfacobs #bridgers

GNFAC News

February 2, King and Queen of the Ridge at Bridger Bowl (fundraiser). Register with Bridger to hike in the event, and create a pledge page to raise funds with your Ridge laps.

Check out the latest updates from the GNFAC: a new forecaster, and new and updated pages to the website.

Doug wrote an article for the upcoming Avalanche Review about our education efforts in Cooke City and the the Centennials (ID and MT).

After last season's two snowmobiler avalanche fatalities on Reas Peak in the Centennial Range we created a webpage so riders could get good, relevant information regarding snowpack and avalanches.

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.