Photos

From obs: "My partner and I were traveling along the ridgeline separating Beehive and Middle Basin. 60 meters before the prayer flags on the ridge, we were stomping on the cornices. We heard a very loud whumphf and the cornice directly below me fell. This and our stomping triggered shooting cracks along the ridge and remotely triggered a cornice 30 meters ahead of us. This cornice fall triggered a hard slab avalanche that was about 15 meters wide and ran at least 100 hundred meters, but we could not see the terminus in the trees. The crown was 1F wind slab failing on facets 35 cm deep. It immediately stepped down to basal facets in spots with total crown depth of 75 cm." Photo: H. Darby 

Skiers saw a recent natural avalanche on the west side of Mt. Blackmore. Photo: S. Lowe

From obs: "The crown of the westward slide looked to be around 4'. Like the one reported the other day, it ran almost to the skin track. Winds were high in the basin and on the ridge tops, transporting snow into moderately stiff slabs." Photo: S. Lowe

A natural avalanche to the lookers left of the summit of Mt. Blackmore. 

From obs: "I noticed new debris coming out of the lookers left chute on Southeast face of Blackmore. got closer to the ridge and noticed this. happened last night or this morning. 5 feet deep 50 to 100 ft wide and ran roughly 800 feet." 

Photo: N. English

Avalanche triggered on 01/19. From obs on 01/20: "Off the top on the face of Blackmore- Talked to the guy that set this slide off, it was triggered while he was skiing down yesterday (01/19) morning from the summit. Ran all the way down to almost the skin track." Photo: N. English

On 1/20 At the top of The Ramp/Wolverine I pushed on some small wind-loaded terrain features with skis. About three inches of soft snow moved/cracked no wider than my ski width, then one step lower a hard slab cracked out about 10' wide, 10-12" deep and did not move more than a few inches downhill due to flatter terrain supporting it below. GNFAC

On Sawtelle Peak, Island Park, when the clouds lifted we could see a crown of a snowmobiler triggered slide that occurred yesterday. It broke on the buried surface hoar and facets about 1.5 feet under the surface. Recent snow and wind-loading has created dangerous avalanche conditions. Photo: GNFAC

On Sawtelle Peak, Island Park, when the clouds lifted we could see a crown of a snowmobiler triggered slide that occurred yesterday. It broke on the buried surface hoar and facets about 1.5 feet under the surface. Recent snow and wind-loading has created dangerous avalanche conditions. Photo: GNFAC

On Sawtelle Peak, Island Park, when the clouds lifted we could see a crown of a snowmobiler triggered slide that occurred yesterday. It broke on the buried surface hoar and facets about 1.5 feet under the surface. Recent snow and wind-loading has created dangerous avalanche conditions. Photo: GNFAC

Natural & remote trigger avalanches observed on most steep terrain. Photo: J. Kinnison. Photo taken 1/18/24

Natural & remote trigger avalanches observed on most steep terrain. Photo: J. Kinnison. Photo taken 1/18/24

Avalanches on Crown Butte that broke overnight 1/17 or early morning 1/18. Photo: B. Fredlund

Avalanche crown on Miller Ridge that broke overnight 1/17 or early morning 1/18. Photo: B. Fredlund

Avalanche crown on Miller Ridge that broke overnight 1/17 or early morning 1/18. Photo: B. Fredlund

Avalanche crown on Miller Ridge that broke overnight 1/17 or early morning 1/18. Photo: B. Fredlund

From facebook message: "Multiple remote triggers across this slope."

Up Targhee Creek, near Lionhead Ridge. 1/18/24 Photo: R. Schlueter. 

From facebook message: "Multiple remote triggers across this slope."

Up Targhee Creek, near Lionhead Ridge. 1/18/24 Photo: R. Schlueter. 

From facebook message: "Multiple remote triggers across this slope."

Up Targhee Creek, near Lionhead Ridge. 1/18/24 Photo: R. Schlueter. 

Skiers in the Butte area triggered this avalanche while "ski-cutting the slope", this avalanche is 300' wide and the crown averages 1' deep. Photo. W. Harden