Photos
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Northern Madison, 2022-12-26 At Buck Ridge there was a stout ice crust (maybe a rain/mist crust) about 10cm down that is not a problem at the moment, but notable due to being widespread and unusual for our normally dry snowpack. Photo: GNFAC |
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Cooke City, 2022-12-26 A splitboarder triggered shooting cracks on a slope northwest of Cooke City. Photo: B. Fredlund Link to Avalanche Details |
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Cooke City, 2022-12-26 A skier intentionally triggered this avalanche northwest of Cooke City. Photo: B. Fredlund Link to Avalanche Details |
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, 2022-12-26 |
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, 2022-12-26 Many slick roofs shed this winter's snow with the above-freezing temperatures. There are some impressive fracture lines at the ice rink in Bogert Park in Bozeman. Photo: GNFAC |
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Lionhead Range, 2022-12-24 Alex Marienthal cuts a column for his stability test on Ski Hill in Lionhead. Photo: GNFAC |
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Lionhead Range, 2022-12-24 Alex Marienthal points a 5 cm thick weak layer of faceted snow that broke with an ECTP10. Photo: GNFAC |
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Lionhead Range, 2022-12-23 This Beacon Checker was installed by the Hebgen District FS snow rangers at the trailhead to Denny Creek and Lionhead Ridge. It was made possible by the family of Bradie Becker in partnership with The Friends of GNFAC. Bradie was killed in an avalanche on Lionhead Ridge on February 6th, 2022. Photo: J. Norlander |
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Cooke City, 2022-12-23 Photos attached of some recent natural avalanches observed north of Cooke City today. They all appear to be on N through E aspects, and primarily NE. Elevations between 9,000'- 10,000'. Photo: B. Fredlund Link to Avalanche Details |
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Cooke City, 2022-12-23 Photos attached of some recent natural avalanches observed north of Cooke City today. They all appear to be on N through E aspects, and primarily NE. Elevations between 9,000'- 10,000'. Photo: B. Fredlund Link to Avalanche Details |
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Cooke City, 2022-12-23 Photos attached of some recent natural avalanches observed north of Cooke City today. They all appear to be on N through E aspects, and primarily NE. Elevations between 9,000'- 10,000'. Photo: B. Fredlund Link to Avalanche Details |
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Cooke City, 2022-12-22 On 12/22/22 there were many relatively large recent natural wind slabs in Yellowstone (4-5 that I saw). Photo: GNFAC Link to Avalanche Details |
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Cooke City, 2022-12-22 Natural avalanche on Amphitheater peak appeared to involve recent storm snow. Photo: GNFAC Link to Avalanche Details |
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Cooke City, 2022-12-21 We watched a natural avalanche come down from Republic Mountain from the motel door in Cooke City at 8 am on 12/21/22. Couldn't see details of the slide other than the debris running over the cliffs and powder cloud in the trees below. Photo: GNFAC. Link to Avalanche Details |
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Cooke City, 2022-12-21 The remnants of a small natural avalanche (probably failed last night) on Scotch Bonnet immediately to the north of the Rasta Chutes. Photo: GNFAC (12/21/2022) Link to Avalanche Details |
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Cooke City, 2022-12-21 We took the sled up track around the north side of the knob and below the avy debris from the slide triggered a last week. Only sign of avalanche activity (other then the obvious one) was a small wind slab release on a south facing slope near the top of the pass. Marked on the map below. Photo attached is of the previous slide but the wind slab release would be where the red X is if the photo continued. Looked to be 30ft across, ran for 15-20ft and about 6inches deep. |
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Northern Madison, 2022-12-21 Today we toured up Beehive Basin to Prayer Flags and down into Bear Basin. We found moderate winds transporting snow at Prayer Flags. We also observed a recent small natural avalanche that broke just below the cornice at prayer flags (9200'). It was unclear if a cornice collapse triggered the avalanche. We did not go to the crown, but estimated it to be about 20-30 feet wide, 6-8 inches deep, and running less than 100 feet. Photo: J. Breen Link to Avalanche Details |
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Lionhead Range, 2022-12-20 We dug a pit at 9,000 feet on a SE facing slope above Hebgen Lake. We found weak snow under a slab that broke with an ECTP26. Photo: GNFAC |
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Northern Gallatin, 2022-12-20 From email: "This was in a wind-protected area with soft surface snow and no obvious prior wind loading. By this time it had gotten considerably colder, so we did not spend much time there. The total snow depth was about 115 cm, and the faceted layer went from 50 cm to the ground. ECTP23, and broke clean and smooth. There were also a couple of ECTNs in the upper snowpack above the ECTP." Photo K Birkeland
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Bridger Range, 2022-12-19 From Obs: "Natural wind slab, likely triggered by cornice fall in the last day or two, on a NE aspect at 8500’. Propagated ~150’ wide and ran probably 300’. Slab thickness seemed to be 18-24” at the thickest. No sign of stepping down deeper into facets in the snowpack, although adjacent to this slide there was evidence of an older slide (previous to recent storm cycle) that failed deeper in the snowpack." Photo: C. von Avis Link to Avalanche Details |