Photos

The slope angle at the crown was shallow: 31-32 degrees. A weak layer of surface hoar is notorious for breaking on shallow-angled slopes. Photo: GNFAC

"Chunk of cornice fell off the top of Arden Peak. Notably the same aspect/elevation as the 2/27 observed natural slide on E face of Mt Bole but the cornice fall did not step down beyond the surface snow." Photo: M. Zia

From FB message 3/4/23: "Buck ridge. East facing slope. Beaver creek area. Sled triggered. No burials."

From 3/3/23: "Here is a picture of an avalanche that occurred between Daisy and lulu road just off HWY 212 today. SE facing slope that was snowmobile triggered" Photo: B. Zavora

Triggered by skiers on 3/2/23. "....Crown looks 5-6' deep, 150'+ wide and SW aspect." Photo: B. Zavora

Skier triggered avalanche near Daisy Pass that was triggered the afternoon of 3/2/23. Photo: R. Stacy

Skier triggered avalanche near Daisy Pass that was triggered the afternoon of 3/2/23. Photo: R. Stacy

From IG message: "Yesterday on March 2nd we were on the trail to daisy pass just before the bowl in cooke city. There were 12 of us of us no total. Just behind us a large avalanche came down covering the trail and clearing trees on the way. We went to investigate to make sure there were no burials when 2 skiers came down and said they were stomping on the facet layer and triggered it intentionally. The slide swept the skier’s parked snowmobile off trail and carried it about 100 feet."

From IG message: "Yesterday on March 2nd we were on the trail to daisy pass just before the bowl in cooke city. There were 12 of us of us no total. Just behind us a large avalanche came down covering the trail and clearing trees on the way. We went to investigate to make sure there were no burials when 2 skiers came down and said they were stomping on the facet layer and triggered it intentionally. The slide swept the skier’s parked snowmobile off trail and carried it about 100 feet."

From email 3/3/23: "Another natural avalanche that ran across the road near Daisy pass last night. Our groomer took this picture. I was also informed that some skiers triggered an avalanche near Daisy yesterday afternoon. No other details on that. This would be a w/SW facing slope." Photo: UYSC Groomer

We observed a couple more natural avalanches on Miller Ridge today.  NE aspects, around 9800'. Photo: B. Fredlund

A cornice collapsed on Monday, triggering an avalanche on the slope below. Dave Zinn assesses the layers in the flank. Photo: GNFAC

A cornice collapsed on Monday, triggering an avalanche on the slope below. Dave Zinn digs in the flank to assess the point of failure. Photo: GNFAC

A cornice collapsed on Monday triggering an avalanche on the slope below. Photo: GNFAC

On 3/1/23 at 11am we saw a very large avalanche crown on the east side on Henderson Mtn., in the big avalanche path off the highest summit. It likely occurred late yesterday or early this morning. There was minimal new or drifted snow covering it, and it was snowing and blowing yesterday all day. I estimate the crown is 6-8 feet deep, possibly 10 feet in spots. Measured on GoogleEarth to be 700 feet wide. 1200 feet vertical. HS-N-R3-D3-O. Photo: GNFAC

On 3/1/23 at 11am we saw a very large avalanche crown on the east side on Henderson Mtn., in the big avalanche path off the highest summit. It likely occurred late yesterday or early this morning. There was minimal new or drifted snow covering it, and it was snowing and blowing yesterday all day. I estimate the crown is 6-8 feet deep, possibly 10 feet in spots. Measured on GoogleEarth to be 700 feet wide. 1200 feet vertical. HS-N-R3-D3-O. Photo: GNFAC

On 3/1/23 at 11am we saw a very large avalanche crown on the east side on Henderson Mtn., in the big avalanche path off the highest summit. It likely occurred late yesterday or early this morning. There was minimal new or drifted snow covering it, and it was snowing and blowing yesterday all day. I estimate the crown is 6-8 feet deep, possibly 10 feet in spots. Measured on GoogleEarth to be 700 feet wide. 1200 feet vertical. HS-N-R3-D3-O. Photo: GNFAC

A rider triggered an avalanche on a small slope in the Cabin Creek area. Photo: K Bye

A rider triggered an avalanche on a small slope in the Cabin Creek area. Photo: K Bye

From the USFS Snow Rangers, "We saw one small wind slab avalanche in the new snow above Beaver Creek on a north aspect."