Photos

From obs: "I experienced a large, audible collapse and shooting cracks in a 10ft radius around me" Photo: Anonymous 

Travel conditions remain questionable at the Throne. Photo: GNFAC

Monday or Tuesday, a small natural avalanche released when strong winds stripped and loaded slopes at all elevations. Photo: GNFAC

Ian Hoyer puts up the weather station in Taylor Fork. Photo: GNFAC

Ian Hoyer stands in a 60 cm deep snowpit near Sunlight Basin, Taylor Fork. Photo: GNFAC

From obs on 12/25: "I veered off the existing skin track and experienced a sizeable collapse on the NE side of the ridge.  I'd estimate the collapse extended roughly 30 feet in either direction.  I continued along this path and experienced one additional collapse." Photo: J. Hobson

Alex Marienthal gets ready to do an ECT in a snowpit off Lionhead Ridge.

Doug Chabot walking off Lionhead Ridge to a snowpit site.

The wind picked up in the Bridger Range and transported snow into unstable drifts. Photo: GNFAC

We triggered a small avalanche on a test slope at the ridgeline of the ramp. Wind was transporting the recent snow into drifts sensitive to human triggers. Photo: GNFAC

We snowmobiled up to 9,000' on Sawtelle peak, then skied to dig a couple pits. Our first pit was on an East aspect on a heavily wind loaded slope. The HS was 130cm (or 4.2 feet). There was 8" of new snow equal to 0.85" SWE, sitting over old consolidated snow that made up a slab over soft, weak facets about 50cm off the ground. We had ECTP24 x2 break on the old weak snow.... Photo: GNFAC

We snowmobiled up to 9,000' on Sawtelle peak on 12/23/23. The snow depth at 8,800' was 3-4 feet. Photo: GNFAC

A natural avalanche was seen yesterday,12/22, north of Cooke City that likely happened earlier this week. Photo: B. Fredlund

Large surface near Little Bear. Photo: JR Mooney

Skiers on 12/21 saw 2 old avalanches while skiing in the Divide Peak Cirque. These avalanches likely happened near the end of the last storm cycle, 12/9. 

From obs: "Saw evidence of two natural avalanches on southwest aspects (see photos). The age of these slides was hard to gauge based on our lack of recent snow."

Roller balls in Hyalite at 8000'. Photo: M. Zia

An avalanche along the divide between Muddy and Bear Creek. Avalanche was approximately 100 ft wide and 25 ft tall, breaking on facets just above a crust near the ground. Slide was clearly several days old, estimating it broke Friday, 12/15/23. Photo taken 12/19/23. GNFAC

Surface hoar is big and widespread along Buck Ridge. 12/19/23. Photo: GNFAC

Thin snowcover in 1st Yellowmule on 12/19/23. Photo: GNFAC

We dug 3 pits on or around the Ramp which is to the north of Bridger Bowl. One was SE facing, the other was E facing and our last was N facing. Depth ranged from 45 cm to 67 cm and all stability tests (6) had ECTN12-14. Photo: GNFAC