Photos

Displaying page 4 of photos 61 - 80 of 157
Cooke City, 2022-01-03

Large, deep avalanche on East face of Mt. Abundance. Photo from 1/2/22: S. Strenge

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Cooke City, 2022-01-02

Snomobilers observed this natural avalanche on a NE aspect on Sheep Mountain on 1/1/22. It appeared to be more than 48 hours old. Photo: J. Fritz

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Bridger Range, 2022-01-02

From obs: 01/01/22: "Saw a small slide come off the ridge. We dug a pit and the wind slab was 8 inches to a foot and a half. During our snow tests it consistently broke on the week layer around a foot deep." Photo: B. Paulson

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Bridger Range, 2022-01-01

From obs 1/1/22: "While skinning towards the ramp we witnessed what looked like a natural slide that started right around Pete’s Pinnacle which ran down along the boundary line about 1000 feet. Unknown trigger."

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Bridger Range, 2022-01-01

Strong ridgetop winds transported snow onto Saddle Peak creating unstable slabs on January 1st. Photo: GNFAC

Bridger Range, 2022-01-01

Strong winds on 1/1/2022 formed fresh, soft drifts. These drifts broke and cracked easily, and slid on steep slopes. Photo: GNFAC

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Bridger Range, 2022-01-01

We saw this natural avalanche on the north summit of Saddle Peak on 1/1/2022. It is one of at least 4 natural avalanches that broke on wind-loaded slopes on Saddle Peak in the past 3-4 days. Recent snow and wind formed slabs over weak facets which makes large avalanches possible to trigger. Photo: BBSP

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Bridger Range, 2022-01-01

We saw this fresh natural avalanches near Saddle Peak on 1/1/2022. Recent snow and wind formed slabs over weak facets which makes large avalanches possible to trigger. Photo: GNFAC

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Cooke City, 2021-12-30

This photo shows where people and their machines were buried. Photo: S. Strenge

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Cooke City, 2021-12-29

Upper portion of the fatal avalanche on Scotch Bonnet. 12/28/21

Photo: GNFAC

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Cooke City, 2021-12-29

Crown of the fatal avalanche on Scotch Bonnet. 12/28/21.

Photo: GNFAC

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Cooke City, 2021-12-29

GNFAC Forecasters Ian Hoyer and Doug Chabot at the crown of the fatal avalanche on Scotch Bonnet. 12/28/21 

Photo: GNFAC

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Dillon Area, 2021-12-28

Snowmobiled up to 9000ft, skinned up West face of Comet to 10K ft and skied low angle trees back to sled. Heavy windload with cross loading common on this slope. Dug a pit at 9200 ft, W aspect, 28 degree slope. Height of snow was 110 cm, about 3 and a half feet deep. Photo shows hand hardness profile in snowpit with faceted weak layers of concern in mid and lower snowpack. Extended column test had propagation on 18 (ECTP 18) on large facets (see photo) around a crust about 40 cm up from ground. No cracking or collapsing observed on tour. Good coverage for this time of year on this slope.

Cooke City, 2021-12-28

Snowmobilers riding near Mount Abundance north of Cooke City triggered two avalanches on Dec. 27th. No one was caught or injured. Photo: Anonymous

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Cooke City, 2021-12-28

Snowmobilers riding near Mount Abundance north of Cooke City triggered two avalanches on Dec. 27th. No one was caught or injured. Photo: Anonymous

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Cooke City, 2021-12-28

A sled was recovered uphill of the 2 avalanche victims in the same area it was stuck. The sled was found with a probe line and is buried 3-4 feet deep. The avalanche crown can be seen in the upper slopes above them. Photo: GNFAC

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Cooke City, 2021-12-28

The crown of the avalanche that killed two snowmobilers on December 27, 2021 was 300 feet wide and 4-5 feet deep. Photo: GNFAC

Cooke City, 2021-12-28

These are the two sites where the 2 snowmobilers were recovered. They were buried 4-5 feet deep in debris piles that measured 9 feet deep. Photo: GNFAC

Cooke City, 2021-12-28

Ian Hoyer stands next to the crown where we dug a snowpit and investigated the snow structure. The crown averaged 4-5 feet deep. Near his right knee is the layer of weak faceted snow that broke 40 cm above the ground. Above this layer was a thick slab of windblown snow. Photo: GNFAC

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Dillon Area, 2021-12-28

Tour up Maverick Mountain before they open for the season to check how the snowpack is shaping up in the Pioneers; snowpack representative of backcountry. Got a Christmas eve gift when 6-8 inches of maverick 'white thunder' (+/- 5% density) fell overnight adding 30-50% to the total depth of snow. Dug quick pit on SE aspect 8100 feet and there is about 12-16 inches of low density snow with poles and skis going to ground. Dug a little higher on NE aspect 8200 feet where the snowpack is about twice as deep; about 2 feet plus and has a soft-ish slab in the mid-pack. We performed stability tests. ECTP12 10cm off ground. Softer slab on top of loose faceted snow on top of a hard crust made for propagation in the extended column test results. Surprisingly no collapsing and minimal, very localized cracking right around the skis. Ski quality greatly exceeded expectations!