Photos

Displaying page 2 of photos 21 - 40 of 339
Southern Madison, 2019-02-16

This small slide was triggered by a snowmobiler in the southern Madison Range. Although small, this slide is bull's eye information that larger slides are possible on similar slopes. Photo: GNFAC  

Link to Avalanche Details
Southern Madison, 2019-02-16

Cornices are growing large after a series of storms in the southern Mountains. These cornices make up the rim of Sunlight Basin in the southern Madison Range. Cornices are good indicators of which slopes are wind loaded. It's often best to avoid riding on or underneath slopes attached to large cornices. Photo: GNFAC

Cooke City, 2019-02-16

This avalanche failed naturally sometime between Feb 13-15 after recent wind and storm loading. SE aspect, 9400 ft elevation, 2-4' deep. Photo: B. Fredlund

Link to Avalanche Details
Bridger Range, 2019-02-16

Skiers reported intentionally triggering multiple avalanches failing up to a foot deep at the Throne. From the email: "We dug a pit above the top of the throne (ENE aspect, 8400’, 28°) and got an ECTP17. The pit broke below 55cm of new snow, on top of an old wind slab. Bailed on our objective (the ruler) and skied the main ESE chutes on the throne. Ski cut the top of all 3 chutes and got them all to break out 8-12” deep, 100-200’ wide and they all ran 500-700’ into the trees at the bottom of the gullies. The runout hit the trees at the bottom with enough force to snap 3” trees and piled up debris up to 5’ deep." Photo: M. Cohen

Link to Avalanche Details
Bridger Range, 2019-02-16

Skiers reported intentionally triggering multiple avalanches failing up to a foot deep at the Throne. From the email: "We dug a pit above the top of the throne (ENE aspect, 8400’, 28°) and got an ECTP17. The pit broke below 55cm of new snow, on top of an old wind slab. Bailed on our objective (the ruler) and skied the main ESE chutes on the throne. Ski cut the top of all 3 chutes and got them all to break out 8-12” deep, 100-200’ wide and they all ran 500-700’ into the trees at the bottom of the gullies. The runout hit the trees at the bottom with enough force to snap 3” trees and piled up debris up to 5’ deep." Photo: M. Cohen

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

We saw this crown at 1545 on 2/15/19 after viewing this slope at least twice earlier in the day. We went to the avalanche on 2/16. It appeared to be triggered by a cornice fall and broke 4-8' deep. Photo: GNFAC

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

We saw this crown at 1545 on 2/15/19 after viewing this slope at least twice earlier in the day. We went to the avalanche on 2/16. It appeared to be triggered by a cornice fall and broke 4-8' deep. Photo: GNFAC

Link to Avalanche Details
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 

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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.

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Centennial Range, 2019-02-11

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

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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).

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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