Photos

Displaying page 7 of photos 121 - 140 of 157
Northern Gallatin, 2021-12-10

This pit was dug in Hyalite Canyon near Twin Falls. It showed 2 mm facets (sugar snow) underlying the snowpack. This layer did not break in stability tests, but anticipate these grains will get weaker with time. Photo: GNFAC

Northern Gallatin, 2021-12-09

For the Bozeman Ice Fest we investigated the Silken Falls and Avalanche Gulch gulleys. They were wind-loaded and had weak snow mid-pack that was unreactive. Avalanches in these gulleys would be deadly, so be extra vigilant in your assessment before crossing. Photo: GNFAC

Northern Gallatin, 2021-12-09

For the Bozeman Ice Fest we investigated the Silken Falls and Avalanche Gulch gulleys. They were wind-loaded and had weak snow mid-pack that was unreactive. Avalanches in these gulleys would be deadly, so be extra vigilant in your assessment before crossing. Photo: GNFAC

Bridger Range, 2021-12-08

We found 80 cm (2+ feet) of snow on a NE facing slope at 8,000 feet outside Bridger Bowl's Boundaries. The snow was supportable with a weak layer at the blue card. Faceted, weak, sugary snow is the layer of concern, but it was not that bad...yet. We'll be watching to see if it gets weaker. Photo: GNFAC

Out of Advisory Area, 2021-12-08

Monday night's new snow formed wind slabs from the strong wind on Tuesday. We are finding these throughout southwest Montana. Photo: D. Britt

Cooke City, 2021-12-07

New snow was blown into thick drifts that can be triggered by skiers or riders. Cracking like this is a sign that drifts are unstable and could slide on steeper slopes. Photo: GNFAC

Cooke City, 2021-12-07

This small natural wind slab was observed north of Cooke City on 12/7/21. Photo: GNFAC

Link to Avalanche Details
Bridger Range, 2021-12-06

"Wet slide from [around 12/1/21]. When it was so damn warm. Velma's and Peter's point runout...." Photo: S. Cottom

Link to Avalanche Details
Southern Madison, 2021-12-06

From obs (12/5/21): "Went poking around in the Taylor Hilgard today looking for snow. As expected, found a thin and faceted snowpack at lower elevations. Snowpack improved considerably above 8500', often .5-1m. I dug a quick pit to the ground on a N-NE facing slope at around 9300'. Pit measuded 1.1m, and to my surprise consisted of a relatively compacted and consolidated snowpack, almost entirely 4f hardness. I was expecting to find layers of facets near the base of the snowpack, and between crusts in the middle, but did not."

Photo: L. Heine

Northern Gallatin, 2021-12-06

This post and picture was on the FB ice climbers page. This is from Comet Alley, a steep gully off the East Fork Road:

Today we found that this gully has some significant loading. We triggered a few wind slab slides on the approach. We managed to get a quick lap on the route and got out before it got loaded more. TBH with more unconsolidated snow I’d reconsider going there.

Link to Avalanche Details
Northern Gallatin, 2021-12-06

From email (12/5/21) : "Small avalanche triggered while approaching ice climb in East fork of Hyalite basin. 

Another D1 natural avalanche was observed later in the day similar aspect/elevation

NE @7600’
SS-AFu-D0.5-I"

Photo: A. Schoening

Link to Avalanche Details
Out of Advisory Area, 2021-12-03

From obs (12/2/21): "Climbed Emigrant Peak from the Gold Prize trailhead via the NW Ridge. As with the rest of the advisory zones, it is dry in the Absarokas. Snow still remains lower in the trees from past storms and, on the ridge, certain pockets have over two feet of wind blown snow. Yet the ridge itself as well as common ski descents to the NW and SE are both quite rocky. Poked around at about 9750 ft on the leeward side of the NW ridge and found an expected wind slab layer with faceted snow underneath it. Lower down at 9200 ft at treeline, I found a shallow snowpack with two distinct crusts near the ground. Both crusts had faceted snow above and below them." Photo: H. Darby

Out of Advisory Area, 2021-12-03

From obs (12/2/21): "Climbed Emigrant Peak from the Gold Prize trailhead via the NW Ridge. As with the rest of the advisory zones, it is dry in the Absarokas. Snow still remains lower in the trees from past storms and, on the ridge, certain pockets have over two feet of wind blown snow. Yet the ridge itself as well as common ski descents to the NW and SE are both quite rocky. Poked around at about 9750 ft on the leeward side of the NW ridge and found an expected wind slab layer with faceted snow underneath it. Lower down at 9200 ft at treeline, I found a shallow snowpack with two distinct crusts near the ground. Both crusts had faceted snow above and below them." Photo: H. Darby

Northern Gallatin, 2021-11-28

Skiers in Hyalite Canyon observed a small wind slab avalanche just below the ridgeline in Divide Cirque (below cornice on the peak in the center of the photo). Photo: T. Saulnier

Bridger Range, 2021-11-28

Skiers near Bridger Bowl reported a thin snowpack with "a distinct crust at around 21 cm with a loose, semi-sugary layer of snow just above it from 21-27cm above the ground." Photo: H. Darby

Northern Madison, 2021-11-28

Skiers in Beehive Basin observed pin wheels on a south-facing slope that are consistent with this weekend's warm temperatures. Unusual for late November in Montana! Photo: Dorje

Northern Madison, 2021-11-28

Skiers in Beehive Basin observed a small slab avalanche and pin wheels on a south-facing slope. Photo: Dorje 

Northern Gallatin, 2021-11-27

Skiers on Mount Blackmore observed cracking within the freshly wind-loaded snow on a southeast-facing slope just below the ridge (11/24/21). Photo: J Schack

Link to Avalanche Details
Out of Advisory Area, 2021-11-22

This powder cloud from a large avalanche was seen on Black Mountain, up Pine Creek outside Livingston. Located outside our advisory area it is a sign of unstable snow, likely from wind-loading, that can be found throughout southwest Montana. Photo: Anon

Link to Avalanche Details
Bridger Range, 2021-11-21

Skiers found a shallow snowpack and very windy conditions today. Snow was moving and loading slopes. Photo: H. Darby