Photos

Displaying page 1 of photos 1 - 20 of 89
Lionhead Range, 2022-12-06

Participants in the West Yellowstone Avalanche Fundamentals Field Session found unstable conditions near "Ski Hill" in the Lionhead area on December 6, indicating that large, human-triggered avalanches are possible. Photo: GNFAC

Bridger Range, 2022-12-06

Avalanche that caught two skiers on Ross Peak. 12/5/22. Red "x"s mark the approximate crown and toe locations. Photo: Anonymous

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Bridger Range, 2022-12-06

Looking up an avalanche in the Banana Couloir on Ross Peak that caught and carried two skiers on 12/5/22. Photo: Anonymous

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Northern Gallatin, 2022-12-06

Observed active windloading on the eastern side of Lick Creek today.

12-18 inch slab broke easily when ski cut and a small but very reactive cornice was rapidly building.

Photo: N. Roe

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Northern Gallatin, 2022-12-05

There was 6" of new snow in Hyalite Canyon with increasing winds throughout the day. Our primary concern is avalanches within the new and wind-drifted snow. Photo: GNFAC

Cooke City, 2022-12-05

"Here’s an avalanche we saw on December 2nd 2022 in cooke city on the north side of Henderson mountain just above lulu road." Photo: G. Kalkowski

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Cooke City, 2022-12-05

from IG: @coldfear

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Cooke City, 2022-12-05

Small avalanche below Henderson Bench. SE aspect. Likley Snowmobile-trigger did not confirm. 70-90’wide, 1-3’ crown, ran 40’ Photo: R. Youngbar

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Cooke City, 2022-12-04

Observed 12/3, likely slid 12/2. Photo: GNFAC

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Cooke City, 2022-12-04

Observed 12/3, likely slid 12/2. Photo: GNFAC

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Cooke City, 2022-12-04
Cooke City, 2022-12-04

Large natural avalanche on Republic Mtn. likely broke early 12/2. Photo: GNFAC

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Cooke City, 2022-12-04

Large natural avalanche on Republic Mtn. likely broke early 12/2. Photo: GNFAC

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Southern Madison, 2022-12-04

From obs 12/3/22: "Looking east from the top of [Ernie Miller] ridge, we noted another crown on a west aspect that looked to be about 100' wide and deep." Photo: H. Darby

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Southern Madison, 2022-12-04

From obs 12/3/22: "Looking toward Ernie Miller ridge, we noted an old crown in the main bowl just below the summit. It was on an E-NE aspect, 200 or more feet wide and looked to be filled in with new snow but was still visible." Photo: H.Darby

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Southern Madison, 2022-12-04

From obs 12/3/22: "Toured up to Bacon Rind today and skied meadows off of the ridge. Dug a pit at 8700' on a W aspect. HS was 70cm. We got an ECTP12 45 cm up from the ground at the interface between wind packed snow and a layer of .5-1mm facets and mixed forms. That layer made up the bottom 45cm of the snowpack in that area. Dug another pit at 8800' on an E aspect. HS was 115cm. We got an ECTP 14 50cm up from the ground on that same interface as described above. The bottom 50cm of the snowpack looked to be facets and mixed forms. The upper 65cm in that area was a mixture of different layers of wind packed grains that ranged from F to 4F hardness." Photo: H. Darby

Southern Madison, 2022-12-04

From obs 12/3/22: "Toured up to Bacon Rind today and skied meadows off of the ridge. Dug a pit at 8700' on a W aspect. HS was 70cm. We got an ECTP12 45 cm up from the ground at the interface between wind packed snow and a layer of .5-1mm facets and mixed forms. That layer made up the bottom 45cm of the snowpack in that area. Dug another pit at 8800' on an E aspect. HS was 115cm. We got an ECTP 14 50cm up from the ground on that same interface as described above. The bottom 50cm of the snowpack looked to be facets and mixed forms. The upper 65cm in that area was a mixture of different layers of wind packed grains that ranged from F to 4F hardness." Photo: H. Darby

Cooke City, 2022-12-04

Observed 12/3/22. Photo: Z. Peterson

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Cooke City, 2022-12-04

From IG 12/3: "...Most notable was this massive slide on fox, looks to have broke 2-6’ deep and over 1000’ wide. Couldn’t quite see the toe from our tour but it looked to have run over 1000’ vertical. Never have seen one so large on Fox…" Photo: M. Cohen

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Lionhead Range, 2022-12-04

From IG 12/3: "It was natural. Happened last night or this morning. It hadn't slid when we left yesterday. We were first tracks in today, and there were no tracks above or below this slide. Crown at the peak was around 6'. Average 2-3' crown. 10' debris piles at least." Photo: R. Malmstrom

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