Northern Gallatin

Surface hoar forming near grotto falls parking lot, on a tree but still indicative of area surface hoar. Photo: E. Jeannette

We observed lots of well developed surface hoar on Chestnut Mountain on top of approximately 12” - 15” of snow. 

When walking around near grotto falls and below fat and thin chance there was significant surface hoar forming. The crystals near fat and thin chance appeared to be 1mm in size and near the grotto falls parking lot specific areas had surface hoar up to 3 or 4mm in size. 

From obs: "Skied Hyalite Peak today and found a wind slab ~10cm deep. Ski cut a small cornice below the main face and broke a small slide that carried ~20’ with little energy with a ~25’ wide crown" Photo: C. Crowe

Skied Hyalite Peak today and found a wind slab ~10cm deep. Ski cut a small cornice below the main face and broke a small slide that carried ~20’ with little energy with a ~25’ wide crown

ECTX on our snow pit on a shaded, west-facing aspect but sun has created a thin crust as well as some pretty large facets on the surface. Looked like wind had collapsed most of them but could cause problems after next storm

From obs: "Photos of a small wind slab avalanche (R1 D1)  from yesterday at approximately 7800 feet on the northern end of bradleys meadow. The slide was initiated by the second skier and although the rest of the slope was <30 degrees the starting zone was a NE facing steep cross loaded wind pillow just below the ridge. 

As my friend was skiing down he saw a crack propagate up and to his left and was able to stop on the side of the path as the snow ran past him. The  crown was approximately 30-40 feet and ran about 100 feet." Photo: G. Roe

From IG: "Remotely skier trigger wind slab up on white worm near sac bowl". Photo: C. Howell

A skier remotely triggered an avalanche on Mt Blackmore (11/9/22).

From email: "I ski cut the top of the face and remote triggered a hard slab from 50’ above the crown. It broke full width of the couloir feature, 150’ wide and 10-18” deep. Broke on new snow/old snow interface which was another hard wind slab. The avalanche ran the length of the East face and stopped just below the last set of cliffs."