Photos

From obs: "Party of three made our way into Beehive Basin up to near the bottom of 4th of July Couloir. Noted strong winds blowing from the south southwest (up the canyon) Saw shooting cracks up to 8 feet out skinning up a boulder pile on a east facing aspect, (picture my friend took). Snowpack still to shallow to confidently ski any of the upper couloirs. Further down in the canyon on the short grassier slopes snowpack was reasonably dense and stable with a weak crust layer under 8-10 inches of the light fluffy stuff, snow depth up to 2 feet in select spots. Friend reported hearing one small whumph breaking trail up to the ridge on a convex roll. Skied out the entire slope with 10ish other people and didn't see any other signs of instability."

From obs: "Snow ranged from a dusting over rocks to some consistent 30-55 cm ribbons of deeper drifted veins of snow. Deepest pocket found was around 65/70cm.

Main recipe found was a growing stout wind slab on top of an older wind slab above some earlier season snow that was barely starting to facet at the base. No propagation on ECT but could change as the weight builds, very obvious slab development."

From obs: "Main recipe found was a growing stout wind slab on top of an older wind slab above some earlier season snow that was barely starting to facet at the base. No propagation on ECT but could change as the weight builds, very obvious slab development."

Hidden Gully

Small storm slabs in Hidden Gully 

Inch thick crust on SW slope in Divide Basin

A 12" deep snowpack at History Rock. 11/14/24. Photo: GNFAC

Snow and dirt at History Rock on November 14, 2024. Photo: GNFAC

From obs: "I made it up to an old crown in a north-facing chute around Fairy Lake at around 9400 ft; it broke the night of 11/6 or the morning of 11/7. It looked like a wind slab that broke on a rotten layer of facets intermixed with scree. Found facets to be fairly widespread through the bottom of the snowpack on the north-facing slopes and surface hoar on most nonsolar slopes." Photo: J. Alford

From obs: "Toured up into the Blackmore/Elephant basin today to get a sense of the snowpack ahead of the upcoming storm cycle. I poked around and dug in a few spots, trying to observe variations in snow depth and to observe where the snow has been faceting. Every pit I dug, ranging from N to SE facing, had faceting near the ground, all of which reacted in stability tests, if stubbornly. The most interesting test result was an ECTP21 in this layer of basal facets. That pit was dug in a large wind drift. I saw no propagation in any other pit or test.

Strong wind gusts were moving large amounts of snow in the alpine, while below treeline they did not exceed moderate speeds and wind transport was non existent. Large drifts were present on lee slopes, while more exposed windward slopes had little to no snow.

Otherwise the snowpack has behaved as one would expect. Solar aspects and exposed flats have a 2-3cm thick sun crust on the surface, and a further complex of crusts throughout the shallow snow pack. Snow depth ranged from 0 - 100 cm throughout the basin, and was generally thinner on solar aspects. Pretty bad skiing all around, not excluding the rock gardens on the skinner out." Photo: W. Hubbard

Natural avalanche in Z-chute. observed 11/9. date of activity unknown.

At 8000' just below the Sacajawea trail bowl, there is about 9" of snow.
 

From obs: "On 20241107 I observed a small natural avalanche from the top of the PK lift at Bridger Bowl. The slide occurred  near the Slushman’s lift on a NNE aspect. It started as a small release in the upper start zone and entrained much of the snow in the couloir down to the ground. L-N-D1.5- G... It was a relatively small slide but had enough power to carry a skier or rider through some very nasty terrain. Similar aspect and elevation to the Super Couloir slide." Photo: P. Crockard

"Skier triggered Pocket in super couloir. Wasn't very unexpected, the skiers left side felt a little slabbier than the skiers right and tried to stay off. Triggered going over a sharky rock spot, not very fast moving and easy to ski out of. Snow depth was 2-2.5 feet." Photo: Anonymous

Skiers spotted a skier-triggered avalanche from a distance. Photo: R. Cigler

Snowpit at Bridger Bowl on 11/5. Photo: B. VandenBos

Photo: S. Bonucci

From obs.: "Triggered a small wind slab: -9600' -N aspect on the NW ridge of Sphinx Mountain -Strong SW wind

-Noticed oth er small crowns, likely triggered from another party traversing the north-facing bowl at similar elevations" Photo: S. Bonucci

Avalanche observed on Chico Baldy above Mill Creek in Paradise Valley.  East aspect at about 9400'. Possibly a wind slab but hard to tell