Photos
Lionhead Range, 2023-12-14 Skiers in Liondhead saw large surface hoar cystals on many slopes. From email "some of the largest I've ever seen!" on 12/13. Photo: R. Parsons
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Out of Advisory Area, 2023-12-14 Skiers near the Arrastra drainage south of Livingston noted a couple of large crowns on an east-facing bowl around 9800' elevation. Photo: T. Benson |
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Southern Madison, 2023-12-13 On the way into and in Tepee Basin, we saw widespread and large surface hoar on the snow surface. Photo: GNFAC |
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Lionhead Range, 2023-12-12 Spent the day up near ski hill with West Yellowstone Avalanche Fundamentals course. We dug various pits @ 8000' below ski hill and found HS 85-55cm on NW-NE aspects. The snowpack structure there had weak snow at the ground capped by a stout ice crust with faceted snow over the crust beneath the recent snow. We recorded ECTP4, ECTP11, ECT20 & a few more propagating results on facets above the crust. Photo: S. Regan
Link to Avalanche Details |
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Lionhead Range, 2023-12-12 |
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Northern Gallatin, 2023-12-12 Got a view of the bowls behind maid of the mist and above twin falls today. Multiple natural wind slabs, up to size 2, on E and NE aspects, roughly 9500 ft. SS-N-R2D2-I. My guess is they are roughly 48 hrs old. Link to Avalanche Details |
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Northern Gallatin, 2023-12-12 A skier triggered avalanche on the SE face of Mt. Blackmore. Crown is marked. Link to Avalanche Details |
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Bridger Range, 2023-12-12 Doug investigating the basal facets after an ECT failed upon isolation (ECTPV) Photo: GNFAC |
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Northern Gallatin, 2023-12-12 On 12/11, skiers noticed this recent D2 avalanche on the E aspect of Blackmore. As they skinned up the SE meadow, they experienced three audible whumpfs. Photo: Eric H Link to Avalanche Details |
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Northern Gallatin, 2023-12-10 From obs: "Yesterday 12/10/2023 at 0900, my climbing partner and I observed a clear crown line that extended throughout much of the east/ north east aspect of the bowl on Elephant Mountain. "
Link to Avalanche Details |
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Northern Madison, 2023-12-10 Alex Marienthal found unstable snow in Beehive at 8,700' on a SE facing slope. Test scores were ECTP 12, 5, V. All breaks were on the large facets in the middle of the snowpack. We also had lots of whumpfs, which is the snow collapsing under our body weight, and a very bad sign. |
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Northern Madison, 2023-12-09 From IG: Natural activity in Beehive Basin Link to Avalanche Details |
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Northern Madison, 2023-12-09 From IG: "Natural activity in Beehive Basin" Link to Avalanche Details |
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Bridger Range, 2023-12-09 A recent skier triggered avalanche at Bridger Bowl in Lower Super couloir. Link to Avalanche Details |
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Southern Madison, 2023-12-09 Riders in Taylor Fork saw natural avalanches on Saturday, 12/9 Photo: W. Sanzone Link to Avalanche Details |
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Southern Madison, 2023-12-09 Riders in Taylor Fork saw natural avalanches on Saturday, 12/9 Photo: W. Sanzone Link to Avalanche Details |
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Southern Madison, 2023-12-09 Skiers saw widespread cracking while skiing on 12/09. Photo: C. Von Avis Link to Avalanche Details |
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Southern Madison, 2023-12-09 From obs: "Several small whoomphs were observed in the shallower, bushy snow at lower elevations, and we had a massive (~100-foot propagation) whoomph on the ridge proper where the cornice met the ridge. Accompanying those whoomphs, we observed shooting cracks at multiple low-angle locations." Photo: J. Krause Link to Avalanche Details |
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Southern Madison, 2023-12-09 From IG on 12/10: "2 slides we triggered remotely in tepee yesterday" Link to Avalanche Details |
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Southern Madison, 2023-12-09 From obs: "Felt wumphs every few steps and had around 30 foot shooting cracks in meadows and on ridgelines." Link to Avalanche Details |