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Photos From the Field

Photo Date Advisory Date Caption
Avalanche Crown Snowpit - 31 March 11 Avalanche Crown Snowpit - 31 March 11 Mar 31, 2011

The latest round of storms in the Bridger Range buried a thin layer of factes 1-1.5 feet below the surface.  This layer produced widespread avalanches on the Throne and surrounding area in...

Sacajawea Slides - 31 March 11 Sacajawea Slides - 31 March 11 Mar 31, 2011

Two large slides north of Naya Nuki Bowl on Sacajawea were prime indicators that recent storms pushed the snowpack past its breaking point.  Photo GNFAC
Snow Plastered Tree 31 March 11 Snow Plastered Tree 31 March 11 Mar 31, 2011

The slide that occurred in Naya Nuki Bowl snapped mature trees and created a debris flow that left snow over 30 feet high on the uphill side of existing trees.  Photo GNFAC
Avalanche in Naya Nuki Bowl - 31 March 11 Avalanche in Naya Nuki Bowl - 31 March 11 Mar 31, 2011

A fast and heavy load produced large avalnaches in the northern Bridgers.  This slide broke 3-5 feet deep and more 1,000 feet across - it ran full track, 1,700 vertical.  It occurred on...

Avalanche North of Bridger Avalanche North of Bridger Mar 23, 2011

This avalanche occured during heavy snowfall on Tuesday.  It was triggered when a skier stepped off the ridge, and broke almost 4 feet deep.  This snowpack on this slope was shallow and...

Relative size of crown Relative size of crown Mar 23, 2011

While this slide did not break over a wide area, it broke deep.  Fortunately no one was caught. Photo: GNFAC
Avalanche Track Northern Bridgers 18 March 11 Avalanche Track Northern Bridgers 18 March 11 Mar 18, 2011

This slide ran more than 1,300 vertical feet, banking off an adjacent slope and taking out trees in its path.
Natural Avalanche Crown Northern Bridgers 18 March 11 Natural Avalanche Crown Northern Bridgers 18 March 11 Mar 18, 2011

This crown was 3-5 feet deep and propagated 400 feet wide. 
Natural Avalanche Northern Bridgers 18 March 11 Natural Avalanche Northern Bridgers 18 March 11 Mar 18, 2011

This slide was likely triggered by a smaller slide off the ridge.  The crown was 3-5 feet deep and propagated 400 feet across.  It failed on a layer of facets near the...

Wind loading and small avalanches - Sacajawea Wind loading and small avalanches - Sacajawea Mar 8, 2011

Soft slab avalanches were releasing in the circled area and running several hundred feet downslope.  These should become larger if winds continue overnight.  There are a few clouds in...