16-17

Very large avalanche observed on Feb. 11. It broke under the weight of historic snowfall and heavy wind loading over the past week in Cooke City. Photo: F. Madsen

Outline of avalanche that failed during recent week of heavy snowfall near Cooke City. Photo: F. Madsen

Avalanche triggered by Big Sky ski patrol in an area that receives heavy loading with a notably poor snowpack. This slope also slid on the same crust near the ground earlier in the year. Photo: BSSP

Ski patrol triggered this slide after heavy wind loading. It broke on weak snow near the ground in an area that receives heavy loading and had not slid yet this year. Photo: BSSP

Very large avalanche that ran off Fisher Peak on Feb. 11 after historic snowfall and strong wind over the past week. Photo: D. Armstrong

This deep crown was observed on Feb 11 on a heavily wind loaded slope after historical snowfall and wind loading over the past week. Photo: B. Campbell

Avalanche that broke during recent heavy storm near Cooke City. This slide was observed on Feb. 11 and many other slides were noted on all aspects breaking 1-3' deep and 100' wide. Photo: B. Fredlund

Avalanche observed in Yellowstone National Park on Feb 11. Broke under weight of recent heavy snowfall in the area. Photo: B. Fredlund