Photos

Natural avalanche on a steep east facing windloaded slope of Miller Ridge. Photo taken 1/10/2020. Photo: B. Zavora.

Snowmobile triggered avalanche on the WSW face of Chimney Rock near Daisy Pass. Appeared fresh on 1/10/2020. Photo: B. Zavora.

Skier triggered slide on Town Hill.  A southerly aspect at 8200'.  It was triggered with a ski cut, and no one was caught.  Specs: about 2' deep, 50' wide, and it ran about 75' vertical. Photo: B. Fredlund

This natural avalanche was on Town Hill, outside Cooke City, on a SE aspect about 7,800'. Photo: B. Fredlund

This avalanche was triggered on Friday, Dec 27 by a snowmobiler. It was 3 feet deep, NE aspect at 10,200 feet and released on facets at the ground. Photo: GNFAC

This avalanche was triggered by a snowmobiler on Friday, 27 Dec. It was adjacent to one that already slid earlier in the day. It broke 4-6 feet deep and could have killed someone. It was a heavily wind-loaded slope that broke on sugary facets near the ground. Photo: GNFAC

This avalanche below Chimney Rock was triggered on Friday, 27 December, by a snowmobiler. He was not caught. It failed on sugary facets near the ground. This slope is heavily wind loaded and faces NW. Photo: GNFAC

View of the second slide on Henderson Mountain from beneath. 12/27/2019. Photo: T. Juelson

Skiers reported: "Two new [trigger unknown] avalanches on the east side of Henderson today. The first photo is from this morning (12/27/19) around 11:00. The second one appears to be much deeper and I didn't notice it until I rode back by around 2:30, so it might have occurred while I was out skiing or I just missed it this morning." Photo: H. Coppolillo

Skiers reported: "Two new [trigger unknown] avalanches on the east side of Henderson today. The first photo is from this morning (12/27/19) around 11:00. The second one appears to be much deeper and I didn't notice it until I rode back by around 2:30, so it might have occurred while I was out skiing or I just missed it this morning." Photo: H. Coppolillo

Skiers saw several old natural avalanches crowns in Republic Creek on 12/21. (all were E, or NE aspects). This one was seen last weekend (12/14). It broke near the ground and is now filled in by drifted snow. Photo: B. Fredlund

Skiers saw several old natural avalanches crowns in Republic Creek on 12/21. (all were E, or NE aspects). Photo: B. Fredlund

Skiers saw these natural avalanche crowns in Republic Creek on 12/22. Photo: B. Fredlund

Near Cooke City, a poor snowpack structure has been found and produced avalanches on east, south and west aspects, and makes large avalanches possible to trigger. Photo: GNFAC

Skiers saw this recent avalanche on 12/21 in Hayden Creek south of Cooke City. It is a ENE aspect at 9,800'. Photo: H. Coppolillo

Looks like it slid sometime over the weekend. Fox mountain shoulder east/se. Photo: B Zavora 

Went up for a closer look at a recent natural avalanche in the bowl of Mt. Republic today, just lookers left of the typical Fin ski zone.  An easterly aspect. Photo: B Fredlund

Recent avalanche up on Amphitheater Mtn., as seen 12/15 from Silver Gate.  NE aspect around 9800'. Photo: B. Fredlund

Photo: A. Bertolino