Photos

Displaying page 1 of photos 1 - 20 of 356
Northern Gallatin, 2025-02-01

From obs: "Wind was rocking in alpine today, fresh windslabs forming and naturally releasing. I could make out 3 on E face, but rough vis with blowing snow. Exposed terrain in alpine had about .5” ice crust from yesterday’s sunshine.

This slab (in pic) released around 11-noon-ish." Photo taken 1/31/25

Link to Avalanche Details
Southern Madison, 2025-01-31

From email: "Today I drove down Taylor fork road, with the thought of potentially getting up on woodward mtn, until I saw a crown on the NE
Face of its northern summit, basically wall to wall near the top of  the slide path. There were a couple other sled tracks that also went to the end of the road, so I figured maybe it was pretty recent, as I didn’t hear about it in the advisory. Concerning because it appears to have propagated maybe 250ft across,  while maybe only 1-2 ft deep". Photo taken on 1/30/25. Photo: T. Grande

Link to Avalanche Details
Island Park, 2025-01-31

Two Point release avalanches on south slope of Two Top. 1/30/25. Photo: K. Allred

Link to Avalanche Details
Cooke City, 2025-01-30

On Jan 30 we spotted several loose wet avalanches that occurred yesterday in steep, rocky terrain up Sheep Creek. Photo: GNFAC

Cooke City, 2025-01-30

On Jan 30 we noted an old, deep persistent slab avalanche on a NW' aspect near the south end of the Republic Creek drainage. This likely broke around a week ago. Photo: GNFAC

Northern Madison, 2025-01-30

We also spotted a small, snowmobile triggered avalanche on a steep, east facing slope in Muddy Creek.  Photo: USFS Snow Rangers 

Northern Madison, 2025-01-30

Saw this cool illustration of wind deposition, scouring and unaffected snow on a ridge line near the top of Bear Creek at the far end of Buck Ridge. Photo: USFS Snow Rangers 

Northern Madison, 2025-01-30

Photo: M R

Island Park, 2025-01-30

Wide spread layer of Surface Hoar mid and upper elevations Two Top area

Northern Madison, 2025-01-29

The surface evolved throughout the day, so we must continue tracking its progression. We found surface hoar in the valley of Beehive, where inverted temperatures were the coldest, crusts with near-surface facets below, and some straight near-surface facet—recycled powder, along with thicker crust and wet snow. Photo: GNFAC

Northern Madison, 2025-01-29

The surface evolved throughout the day, so we must continue tracking its progression. We found surface hoar in the valley of Beehive, where inverted temperatures were the coldest, crusts with near-surface facets below, and some straight near-surface facet—recycled powder, along with thicker crust and wet snow. Photo: GNFAC

Northern Gallatin, 2025-01-29

Large surface hoar across a variety of elevations and aspects at Lick Creek. It was 2-5mm large and present on almost all flats and non-solar aspects. Photo: W Hubbard 

Northern Madison, 2025-01-29

Recent avalanches noted on the NE-E aprons on cedar mountain. SS-N-R2-3-D2-I These appeared to have possibly happened during the last storm cycle and looked to be isolated to layers within the new old snow interface. I also noted similar activity on the same aspects on the adjacent ridge during our approach.  

Link to Avalanche Details
Northern Madison, 2025-01-29

Recent avalanches noted on the NE-E aprons on cedar mountain. SS-N-R2-3-D2-I These appeared to have possibly happened during the last storm cycle and looked to be isolated to layers within the new old snow interface. I also noted similar activity on the same aspects on the adjacent ridge during our approach.  

Link to Avalanche Details
Northern Gallatin, 2025-01-28

Crown of a wind slab avalanche from the saddle of Blackmore. Photo: Anonymous

Link to Avalanche Details
Northern Gallatin, 2025-01-28

I skied forward maybe 5 feet and broke off a wind slab around 20 feet wide and five feet below me. Shifting my weight right after that the snow below me also broke and slid away. Photo: Anonymous

Link to Avalanche Details
Northern Gallatin, 2025-01-28

I broke off a wind slab around 20 feet wide and five feet below me. Shifting my weight right after that the snow below me also broke and slid away. Photo: Anonymous

Link to Avalanche Details
Northern Gallatin, 2025-01-27

A wind slab avalanche on east facing slope in hyalite. Photo: D Moeser

Link to Avalanche Details
Cooke City, 2025-01-27

On Jan 27 we saw  a cornice fall on a very big steep slope up Republic Creek which did not trigger anything large or deeper, but entrained some snow and ran over a thousand feet vertical. Photo: GNFAC

Cooke City, 2025-01-27

On Jan 27 We saw one old, but very large persistent slab avalanche further up Republic Creek (pictured). It was on similar aspect and elevation as a somewhat more recent persistent slab in nearby Hayden Creek, North-northeast, 10,000'. It appeared to be 6'+ deep and 500'+ wide. The bed surface and crown had been partially drifted in, so it seemed it was probably at least a week old...? Photo: GNFAC