Photos

2017-11-24

The lack of freezing temperatures created wet slides in Beehive Basin. These slides occurred on a west facing slope around 8,500 ft. Photo S. Knowles  

2017-11-21

We were finding 4 feet of snow on E and S facing slopes and 6 feet on north facing. All pits showed stability and we only saw one small cornice triggered slide all day. In this pit Eric found a few ice crusts (south facing slope), but no breaks in tests. We had no other signs of instability and we skied the slope. Photo: GNFAC

2017-11-20

High elevation slopes that were heavily wind-loaded (N-E) avalanched with explosives during control work. Crowns were near 3 feet deep and the slides broke at the ground. Photo: BSSP

2017-11-20

Gusty, intermittent winds from the SW blew in Hyalite yesterday and formed windslabs of variable thickness. These small, stiff, slabs were reactive to ski cuts. Photo: G. Antonioli

2017-11-18

Cornices have grown large along ridgelines and could be easy to trigger. Stay far back from the edge and avoid or minimize time on slopes below. Slopes below cornices are likely places to trigger a wind slab avalanche. Photo: B. VandenBos

2017-11-18

Cornices have grown large along ridgelines. Stay far back from the edge and avoid or minimize time on slopes below. Slopes below cornices are likely places to trigger a wind slab avalanche. Photo: B. VandenBos 

2017-11-18

Debris from a natural avalanche on the east side of Mt. Abundance near Cooke City. Snowmobilers nearby heard this slide, and found that it covered their tracks from earlier. A foot to two of new snow and strong wind created very unstable conditions on Friday (11/17).

2017-11-16

Cornices in Beehive basin were growing in size and sensitivity throughout the day. This cornice failed naturally which triggered as small wind slab on the slope below. With more snow and wind in the forecast, cornices and wind slabs will remain an ongoing problem. Photo: G. Antonioli 

2017-11-16

Strong winds on Thursday (11/16) were blowing new snow and forming wind slabs in Beehive Basin. Photo: G. Antonioli

2017-11-16

In this pit we had multiple layers propagate in our stability tests. Two wind slabs near the surface, and a thin layer of facets above the hard crust on the ground. ESE aspect at 9,000' near Fairy Lake. Photo: GNFAC

2017-11-16

Small wind slab near fairy lake. This type of terrain, near ridgelines, is where you can expect to find unstable snow. Though small, a slide like this could be deadly in the wrong place. Photo: GNFAC

2017-11-13

Large plumes of snow blowing off the summit of Mt Blackmore were visible from town today. This is bull's eye information that wind slabs will be a growing problem. Approach all wind slopes with caution pay attention to changing conditions. Photo: A Worthington 

2017-11-13

This natural avalanche on Crown Butte happened November 8, but this photo shows that it was deep! Photo: J. Dobranyi

2017-11-12

Skiers at Bridger Bowl noted that above the base of Alpine and Powder Park lifts, there was surface hoar covering just about everything that hadn't been groomed. Photo: S. Ranney

2017-11-10

Feathery crystals of surface hoar were seen near Palisades Falls in Hyalite. This is not widespread or a current concern, but there's nothing more beautiful than a crisp picture of surface hoar. Photo: M. Santana

2017-11-09

This avalanche was seen today by a skier. The vicinity of the crown is marked. Photo: B. Fredlund.

2017-11-09

This natural avalanche occurred yesterday (Wed, Nov 8) on the north aspect of Crown Butte outside Cooke City. The crown of the avalanche is marked. Photo: Cooke City Motorsports

2017-11-07

Surface hoar and near surface facets (weak layers) are forming in the Bridger Range, and probably other ranges, during cold temperatures and clear nights. Photo: GNFAC

2017-11-07

Debris on Apron at Bridger Bowl. Likely from a wind slab in Hidden Gully that ran last night. Wind slabs were very easy to trigger today, and could be harmful or deadly if caught in. Photo: GNFAC

2017-11-07

Wind slabs that formed from recent snow and wind were easy to trigger today, and many ran naturally overnight. Wind slabs will continue to grow with more wind, and should be avoided. Photo: GNFAC