Skiers observed natural avalanche activity just outside the Cooke City advisory area in Yellowstone National Park on Monday. Photo: S Gill
A group of riders snapped a photo of this avalanche on Sunday. The slide isn't huge but it would be highly consequential in the treed terrain were trauma is a real possibility. Photo: A. Bertolino
A group of snowmobilers reported triggering this small avalanche from the backside of the rollover on Sunday. Triggering an avalanche from a long distance away is a clear sign of an unstable snowpack. Photo: A. Bertolino
We saw a natural avalanche on 2/7 that appeared to occur late on 2/6 or early 2/7, on the southeast side of Scotch Bonnet Mtn. - GNFAC
This natural avalanche occurred late on 2/6 or early 2/7, on the southeast side of Scotch Bonnet Mtn. Photo: GNFAC
The crown is not visible (it is down and right) but the X marks the approximate spot the rider was found. Photo: GNFAC
The crown was measured 4-11 inches deep and 75 feet wide. Photo: GNFAC
Looking at a weak layer of facets that the avalanche propagated on. Photo: GNFAC
