Photos

Displaying page 1 of photos 1 - 20 of 312
Cooke City, 2019-02-15

This large deep slab avalanche broke on Mt. Henderson on the afternoon of 2/15/19 during strong winds. New snow and strong wind this past week has formed fresh drifts that are easy to trigger. This heavy, steady wind loading pushed deep weak layers to break. With more heavy loading from new snow and wind we will see more large avalanches like this. Photo: GNFAC

Link to Avalanche Details
Cooke City, 2019-02-15

New snow and strong wind this week created fresh drifts that are easy to trigger. This small slide we triggered is a sign that drifts on larger, dangerous slopes are ready to avalanche. Photo: GNFAC

Link to Avalanche Details
Northern Gallatin, 2019-02-13

From an email, "Lots of wind slab activity... tough to tell exactly what happened here with everything filling back in so fast. A few quickly-disappearing crowns on ridge line and throughout E face, good debris pile." Photo: Cody C.

Link to Avalanche Details
Cooke City, 2019-02-12

"Observed a couple of small, natural avalanches out there today (wind loaded SE aspects on Mineral Mountain, about 8,800', just outside of Cooke City)." Photo: B. Fredlund 

Link to Avalanche Details
Cooke City, 2019-02-11

We found 6 feet of snow in a non-wind drifted slope near Lulu Pass (Rasta Chutes) outside Cooke City. This south facing slope at 9600' was stable, but 2 days ago a snowmobiler triggered the entire south face of Abundance, which caused me to pause and still be conservative since these slopes are very similar. Photo: GNFAC

Centennial Range, 2019-02-11

This snowmobile was fully buried, along with its rider on February 7th, 2019, in the Centennial Range.

Link to Avalanche Details
Centennial Range, 2019-02-11

Photo of the snowmobile triggered slide that fully buried a rider on February 7th, 2019.

Link to Avalanche Details
Out of Advisory Area, 2019-02-11

A large snowmobile triggered avalanche in the Gravelly Range (Outside of advisory area) on February 10th, 2019.

From email: "One rider was involved in the incident and was fortunate to be on the upper left side of the bowl when he saw the slide start. ... the crown was about 325 wide and varied in depth from 1 to 4 or 5 feet.  The ridge line was wind loaded and this was an issue we had discussed as a group and wanted to avoid.  We had read the reports for the day and knew that wind loading as well as a persistent week layer were both concerns. .... The rider involved entered the area from around where the road switchbacked and did not realize what was above him due to reduced visibility."

Link to Avalanche Details
Cooke City, 2019-02-10

This slide was triggered by a snowmobiler near Daisy Pass last weekend (2/2/19).

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Cooke City, 2019-02-10

This slide was triggered by a snowmobiler near Daisy Pass last weekend (2/2/19).

Link to Avalanche Details
Cooke City, 2019-02-09

Avalanche triggered by snowmobiler on 2/9/19 on south face of Mt. Abundance near Cooke City (9,500’). One rider was on the slope and another was at the bottom. Both were able to get out of the way and not caught.

Link to Avalanche Details
Cooke City, 2019-02-09

Avalanche triggered by snowmobiler on 2/9/19 on south face of Mt. Abundance near Cooke City (9,500’). One rider was on the slope and another was at the bottom. Both were able to get out of the way and not caught.

Link to Avalanche Details
Cooke City, 2019-02-09

Avalanche triggered by snowmobiler on 2/9/19 on south face of Mt. Abundance near Cooke City (9,500’). One rider was on the slope and another was at the bottom. Both were able to get out of the way and not caught.

Link to Avalanche Details
Cooke City, 2019-02-09

Avalanche triggered by snowmobiler on 2/9/19 on south face of Mt. Abundance near Cooke City (9,500’). One rider was on the slope and another was at the bottom. Both were able to get out of the way and not caught.

Link to Avalanche Details
Lionhead Range, 2019-02-08

This avalanche broke on weak snow in the lower 1/3 of the snowpack after a storm dropped 2-3' of heavy snow between 2/3 and 2/5/19. Photo: GNFAC

Link to Avalanche Details
Lionhead Range, 2019-02-07

Multiple large avalanches occurred in the Lionhead area near West Yellowstone after 2-3’ of heavy snow earlier this week. Photo: GNFAC

Link to Avalanche Details
Lionhead Range, 2019-02-07
Lionhead Range, 2019-02-07
Lionhead Range, 2019-02-07

This avalanche was triggered by snowmobilers on 2/6. 2-3’ of heavy snow earlier this week fell on a weak snowpack making large avalanches possible. Photo: GNFAC

Link to Avalanche Details
Lionhead Range, 2019-02-07

This avalanche was triggered by snowmobilers on 2/6. 2-3’ of heavy snow earlier this week fell on a weak snowpack making large avalanches possible. Photo: GNFAC

Link to Avalanche Details