Photos

Displaying page 1 of photos 1 - 20 of 641
Bridger Range, 2025-05-06

On May 3 We were above the entrance to Exit Chute and triggered a slough slide that slid down one of the gullies that emptied into PK bowl. It appears to have followed an existing slide path, terminating in the top of what looked to be a significant existing avalanche runout. The slide looks pretty wide but not deep. 

Link to Avalanche Details
Bridger Range, 2025-05-06

We were above the entrance to Exit Chute and triggered a slough slide that slid down one of the gullies that emptied into PK bowl. It appears to have followed an existing slide path, terminating in the top of what looked to be a significant existing avalanche runout. The slide looks pretty wide but not deep. 

Link to Avalanche Details
Out of Advisory Area, 2025-05-02

This wet loose avalanche is a great example of where they often occur. Rocks absorb extra heat from the sun and can quickly melt and destabilize the snow. Either move under areas like this early in the morning (as we did), or if you have to travel under them later in the day, move quickly.

Bridger Range, 2025-04-20

"Today (Saturday, 4/19), I triggered a small soft-slab avalanche at about 7,700' on a E-NE aspect on the headwall between Frazier Lake and Angier Lake in the northern Bridgers. The slide was maybe 6" deep, 20' wide and ran 100-200 feet and involved only the new storm snow over the icy, thick crust underneath. No one was caught or injured, though I had a bit of a scare because my dog was right in the path (luckily she outran it)." 

Link to Avalanche Details
Bridger Range, 2025-04-20

"Today (Saturday, 4/19), I triggered a small soft-slab avalanche at about 7,700' on a E-NE aspect on the headwall between Frazier Lake and Angier Lake in the northern Bridgers. The slide was maybe 6" deep, 20' wide and ran 100-200 feet and involved only the new storm snow over the icy, thick crust underneath. No one was caught or injured, though I had a bit of a scare because my dog was right in the path (luckily she outran it)." 

Link to Avalanche Details
Cooke City, 2025-04-20

Near Cooke City on 4/19 skiers triggered a dry loose avalanche and a small wind slab avalanche. The wind slab broke in a drifted pocket near the base of cliffs, 3-6" deep x 10' wide. Northeast aspect, 10,200'. Photo: GNFAC

Link to Avalanche Details
Bridger Range, 2025-04-19

"yesterday (4/18), saw this one wet loose slide that naturally started off some rocks. Decent size by the bottom. Other than that, just some spiff. Surprisingly didn’t see any big wind slabs trigger, despite the widespread wind effect in the northern Bridger’s. Lots of wind scour on southerly aspects. Northern aspects had wind loading." Photo: W. Landry

Link to Avalanche Details
Northern Gallatin, 2025-04-15
Northern Gallatin, 2025-04-15

We went through Flanders' Creek to the Flanders Weather Station to pull it for the season. We descended to the Grotto Falls TH via the Winter Dance Route. The surface snow got wet as the day progressed, but we saw no wet snow avalanche activity. I wouldn't be surprised if there was limited activity as the day progressed.

Recent warm temperatures have almost universally affected snow surfaces. North-facing slopes above 9500' elevation remain dry, and pockets of dry snow exist at lower elevations on shaded slopes. South-facing slopes have cycled a few times, and the corn snow is coming in reasonably well. 

There were no signs of dry snow instability. Photo: GNFAC

Northern Gallatin, 2025-04-15
Cooke City, 2025-04-13

Screenshot of winds from Lulu Pass wind station during the storm.

Bridger Range, 2025-04-09

Winds were cranking at ridge top elevation, transporting what soft snow there was. Minimal hazard formation. I spotted one fresh wind slab avalanche near Hardscrabble. The slide ran several hundred feet in steep terrain but was very thin (R1,D1). Photo: GNFAC

Link to Avalanche Details
Bridger Range, 2025-04-09

Winds were cranking at ridge top elevation, transporting what soft snow there was. Minimal hazard formation. I spotted one fresh wind slab avalanche near Hardscrabble. Photo: GNFAC

Link to Avalanche Details
Cooke City, 2025-04-09

Old wind slab, South East on Scotch Bonnet. Photo: Anonymous

 

 

Cooke City, 2025-04-07

Apr 7 A Skier triggered a 6”x20’ wide wind slab on a N aspect at 9,800’.

 

Link to Avalanche Details
Cooke City, 2025-04-07

Apr 7 A Skier triggered a 6”x20’ wide wind slab on a N aspect at 9,800’.

 

 

Link to Avalanche Details
Cooke City, 2025-04-07

On Apr 7 Skiers triggered D1-D1.5 wet loose on SE aspect at 10,000’.

 

Link to Avalanche Details
, 2025-04-07

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Cooke City, 2025-04-06

Apr 5 Wind slabs were still reactive. We triggered 3 small, 3-8" deep x 5-15' wide, hard wind (1F+) slabs on convex test slopes well below the main ridgelines. 9,800', NE aspects. Photo: GNFAC

Link to Avalanche Details
Cooke City, 2025-04-06

Apr 5 Wind slabs were still reactive. We triggered 3 small, 3-8" deep x 5-15' wide, hard wind (1F+) slabs on convex test slopes well below the main ridgelines. 9,800', NE aspects. Also triggered one softer (4F) wind slab just below the high ridgeline, 10,200', NE aspect. 10-15' wide x 6-8" deep (Pictured). Photo: GNFAC

Link to Avalanche Details