Photos

Displaying page 7 of photos 121 - 140 of 222
Bridger Range, 2018-12-17

This wind slab released as a result of an intentional ski cut. The initial slab that released was approximately 100 feet wide with a 6-12" crown. It triggered a larger slab that was 300 feet wide and ran close to 2000'. More information in the avalanche activity list. P: M. Cohen

Link to Avalanche Details
Bridger Range, 2018-12-17

Natural slide on Northern wall of the Hourglass in Northern Bridgers. No tracks in or out. Crown looked to be 8-10” deep and 25-30ft wide. Photo: N. Baird

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Cooke City, 2018-12-17

Naturally triggered wind slab and cornice in Yellowstone National Park near Cooke city. Observed on Saturday (12/15). Photo: B. Fredlund

Link to Avalanche Details
Cooke City, 2018-12-17

These avalanches were observed on Sunday (12/16) outside of Cooke City. They released naturally, possibly from a cornice break. Photo: N. Stayner

Link to Avalanche Details
Northern Madison, 2018-12-17

Ski patrol triggered this avalanche at the Yellowstone Club on Sunday (12/16). "R3/D2 (8400’, ENE facing, 36deg start zone) that was about 120’ wide and ran vertically 200’. The crown was 1.5-2’, went to ground, and was a mostly faceted snowpack with a bit of wind effected snow in the top few inches. The slide was released from a 4lb air blast." Photo: YCSP

Link to Avalanche Details
Northern Madison, 2018-12-17

Ski patrol triggered this avalanche at the Yellowstone Club on Sunday (12/16). "R3/D2 (8400’, ENE facing, 36deg start zone) that was about 120’ wide and ran vertically 200’. The crown was 1.5-2’, went to ground, and was a mostly faceted snowpack with a bit of wind effected snow in the top few inches. The slide was released from a 4lb air blast." Photo: YCSP

Link to Avalanche Details
Northern Madison, 2018-12-16

A snowmobiler triggered this avalanche on Saturday (12/15) near Buck Ridge. It is on a wind loaded slope and likely broke on buried facets that formed in early December.

Link to Avalanche Details
Northern Madison, 2018-12-16

This wind-loaded slope was triggered Sunday morning (12/16) by a snowmobiler. The debris was hard slabs of wind-drifted snow. The avalanche broke on a layer of small sized facets that formed during the frigid, clear weather 10 days ago. No one was caught. Photo: GNFAC

Link to Avalanche Details
Northern Madison, 2018-12-16

This wind-loaded slope was triggered Sunday morning (12/16) by a snowmobiler. The debris was hard slabs of wind-drifted snow. The avalanche broke on a layer of small sized facets that formed during the frigid, clear weather 10 days ago. No one was caught. Photo: GNFAC

Link to Avalanche Details
Northern Madison, 2018-12-16

Our snowpit showed instability in the small, sugary facets that are underneath a hard slab of wind blown snow. An avalanche was triggered around the corner from this snowpit around the same time we were digging! Photo: GNFAC

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Northern Madison, 2018-12-16

These natural slides are on a heavily wind loaded slopes, and were observed on Saturday (12/15). Debris ran into the trees at the bottom of the bowl. Photo: @dinsmoredigital

Link to Avalanche Details
Northern Madison, 2018-12-16

These natural slides are on a heavily wind loaded slopes, and were observed on Saturday (12/15). Debris ran into the trees at the bottom of the bowl. Photo: @dinsmoredigital

Link to Avalanche Details
Southern Madison, 2018-12-15

A skier reported a recent slab avalanche at Ernest Miller in the southern Madison. This is a good reminder that as you move further south in our advisory area, we are seeing a thinner and generally less stable snowpack. Photo: C. Grote

Link to Avalanche Details
Southern Madison, 2018-12-15

A skier reported a recent slab avalanche at Ernest Miller in the southern Madison. This is a good reminder that as you move further south in our advisory area, we are seeing a thinner and generally less stable snowpack. Photo: C. Grote

Link to Avalanche Details
Southern Gallatin, 2018-12-15

A skier in the southern Gallatin found a buried layer of surface hoar that propagated in stability tests. This surface hoar layer has been found at several locations in the advisory area. Photo: S. Reinsel

Bridger Range, 2018-12-15

We found unstable stability test scores (ECTP 11) in this pit. And this drift collapsed with an audible "whumph" and cracks 30 feet wide. A buried layer of surface hoar and facets collapsed under a hard slab that formed from strong winds last night. Photo: GNFAC

Link to Avalanche Details
Bridger Range, 2018-12-15

Crack in a drift that collapsed 30 feet wide, accompanied by an audible "whumph", as we skinned over it. 12/15/18 West side of Bridger Range. Recent strong winds formed hard slabs over weak surface hoar and facets. Photo: GNFAC

Link to Avalanche Details
Bridger Range, 2018-12-15

This drift collapsed and cracked 30 feet wide, accompanied by an audible "whumph", as we skinned over it. 12/15/18 West side of Bridger Range. Recent strong winds formed hard slabs over weak surface hoar and facets. Photo: GNFAC

Link to Avalanche Details
Northern Gallatin, 2018-12-15

A skier in Hyalite observed several day-old wind slab avalanche near the top of Flanders, and noted "small rolls above the glade and up to ridgeline were still cracking under the weight of a skier." Another reminder that recently wind-loaded pockets are reactive throughout the advisory area. Photo: G. Antonioli

Link to Avalanche Details
Northern Madison, 2018-12-15

Big Sky Ski Patrol saw two natural wind slab avalanches during control this morning that had released after being loaded by strong winds last night. From BSSP: "We observed the evidence of 2 small naturals this am in the upper cirque where the strong winds had managed to deposit some snow very low below cliff bands. We did not see this loading pattern anywhere else on the hill." Photo: BSSP

Link to Avalanche Details