Photos

I dug a pit above Silken Falls in the gulley. I found a weak layer of facets breaking about 10" under a wind slab (ECTP15). We did not get any cracking, but the terrain is very serious and even a small slide could be deadly. We did not feel comfortable center punching up the gully. Given how much traffic the gullies are getting, I do not think it is widespread, but it's out there and could avalanche.

Wind and snow this weekend may make this layer more unstable, so it's important to be careful crossing exposed terrain. Either rope up or tun around if it is suspect.

Two small natural avalanches observed today from the YC. Both on likely wind loaded easterly aspects on slopes around Cedar Mountain at roughly 8,000’. Photo: Yellowstone Club Ski Patrol

Two small natural avalanches observed today from the YC. Both on likely wind loaded easterly aspects on slopes around Cedar Mountain at roughly 8,000’. Photo: Yellwostone Club Ski Patrol

Looking down path of avalanche triggered by a snowmobiler on 12/6/22 near Daisy Pass, Cooke City. NW-N aspect, 9,800'. Photo: GNFAC

Crown of avalanche triggered by a snowmobiler on 12/6/22 near Daisy Pass, Cooke City. NW-N aspect, 9,800'. Photo: GNFAC

Avalanche triggered by a snowmobiler on 12/6/22 near Daisy Pass, Cooke City. NW-N aspect, 9,800'. Photo: GNFAC

From IG: “Avalanche spotted on Henderson bench today, appears to be cornice triggered yesterday or the day before. 2-5 feet deep, 600’ wide, ran 800 vertical.” Photo: M. Cohen

Participants in the West Yellowstone Avalanche Fundamentals Field Session found unstable conditions near "Ski Hill" in the Lionhead area on December 6, indicating that large, human-triggered avalanches are possible. Photo: GNFAC

Avalanche that caught two skiers on Ross Peak. 12/5/22. Red "x"s mark the approximate crown and toe locations. Photo: Anonymous

Looking up an avalanche in the Banana Couloir on Ross Peak that caught and carried two skiers on 12/5/22. Photo: Anonymous

Observed active windloading on the eastern side of Lick Creek today.

12-18 inch slab broke easily when ski cut and a small but very reactive cornice was rapidly building.

Photo: N. Roe

There was 6" of new snow in Hyalite Canyon with increasing winds throughout the day. Our primary concern is avalanches within the new and wind-drifted snow. Photo: GNFAC

"Here’s an avalanche we saw on December 2nd 2022 in cooke city on the north side of Henderson mountain just above lulu road." Photo: G. Kalkowski

from IG: @coldfear

Small avalanche below Henderson Bench. SE aspect. Likley Snowmobile-trigger did not confirm. 70-90’wide, 1-3’ crown, ran 40’ Photo: R. Youngbar

Observed 12/3, likely slid 12/2. Photo: GNFAC

Observed 12/3, likely slid 12/2. Photo: GNFAC

Photo: GNFAC

Large natural avalanche on Republic Mtn. likely broke early 12/2. Photo: GNFAC

Large natural avalanche on Republic Mtn. likely broke early 12/2. Photo: GNFAC