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This slide occurred ran full path to the bottom of this gully. Photo: A. Whitmore

This slide occurred on a NE facing slope around 8,880 ft. above Hebgen Lake. The slide broke 150' wide and ran nearly the entire path - 1,200 vertical feet. It likley failed on a layer of facets 2-3 feet below the surface. Photo A. Whitmore 

This slide occurred on a south facing slope around 9,500 ft. and was remotely triggered from the bottom of the slope. New snow (18") sitting on top of an ice crust was the recipe that caused this slide. Photo GNFAC

This slide was triggered on Woody Ridge south of Cooke City. The skier who triggered the slide impacted the weak layer on the lookers left side of the crown where the snowpack is thin. The weak layer collapsed and propagated into a much deeper part of the snowpack creating a large and destructive avalanche. Photo GNFAC

This slide was triggerd by a skier on Woody Ridge outside of Cooke City. The slope was WNW facing around 9,800 ft. The slide failed on a layer of facets near the ground. Photo GNFAC

This slide was one of two that were triggered on Thursday (2/27) at the same time as skiers approached this slope adjacent to a place on Lone Mountain called "Little Bridger." They broke on a thin layer of facets in the middle of the snowpack (about 3 feet deep). One of the two slides propagated into a large wind drift and broke 6-7 feet deep. Photo: W. Petty

Cornices have become very large recently. When they break and fall they can trigger avalanches. The slide just left of center in this photo was triggered by a falling cornice and caused the snowpack to break in two different layers. The good news is that this slide did not propagate much beyond the area where the cornice hit the slope but could be a warning of more avalnches to come with more snowfall. Photo: Barnes