Regional Conditions for Lionhead Range

We saw this natural avalanche on 1/23/21. It likely occurred in the past week. SE aspect at 9,200', Photo: GNFAC

This avalanche is on the east side of Lionhead Ridge. Trigger is unknown; elevation is 9,000'. Photo: GNFAC

This avalanche was likely triggered by a snowmobiler on 1/9/21. It is on Ski Hill and the slope avalanched in between the two avalanches that Dave and Doug triggered earlier. It failed on depth hoar; east facing, 8,000'. Photo: GNFAC

This small avalanche was likely triggered by a passing snowmobiler on 1/9/21. This is located south of Airplane Bowl, NE aspect at 9000'. Photo: GNFAC

This avalanche likely released with the snowfall and wind on Wednesday (1/13). It is east facing and the lowest half of the snowpack is facets. Photo: D. Haluptzok

A snowmobiler triggered slide on the east side of Lionhead Ridge to the north of Airplane Bowl. Photo: Photo: D. Haluptzok

A snowmobiler triggered slide on the east side of Lionhead Ridge adjacent to a slope called Dead Tree Hill. Photo: D. Haluptzok

We remotely triggered (from 30' away) this avalanche at Ski Hill in the Lionhead area. These are red-flags! Stay off of and out from under steep slopes until the avalanche conditions improve. Photo: GNFAC

We triggered this avalanche from 50 feet away. We were walking on a low-angle slope, collapsed the slope, and where the pitch got steeper, we had an avalanche. This is an obvious sign of dangerous instability. If you are on steep slopes it is LIKELY that you will trigger an avalanche. Today, we triggered two avalanches. Photo: GNFAC

A skier kicked off a larger than expected cornice as they skinned up the ridge on the W side of Beehive basin on Sunday (12/20/20).

Doug intentionally triggered this wind-loaded sidehill. Weak, faceted snow broke under a 1' deep soft slab of windblown snow. Small avalanches like this are indicators of instability on bigger slopes. These conditions can be found throughout the southern Gallatin, southern Madison, Lionhead and Centennial Ranges. Photo: GNFAC

We put up the Taylor Fork Weather station today. It measures wind direction and speed, RH, and temperature. Coupled with the Carrot Basin SNOTEL, this gives us a good idea on what is occurring in this range. Photo GNFAC

Light wind created soft drifts of new, low density snow near the ridgeline in the Bridger Range. This wind slab easily cracked when touched with skis, 20 feet along the ridge and 5-10 feet down, but didn't slide. This is a sign drifts will be unstable as they grow with more snow and wind. Photo: GNFAC

From IG post: "Weak and thin snowpack. A little sluff was all it took to entrain the whole season’s snowpack. S. Madison ~9000’ east facing" Photo: @vt.to.mt

From IG post: "Weak and thin snowpack. A little sluff was all it took to entrain the whole season’s snowpack. S. Madison ~9000’ east facing" Photo: @vt.to.mt

We found a thick layer of surface hoar (1-2cm) on top of the snowpack at Lionhead Ridge on 11/24/20. Below that layer the snowpack was faceted and weak. This will be an unstable foundation for future storms. Photo: GNFAC

Watch the video HERE!

The BBWC (Bridger Bowl Wind Cloud) on Tuesday 10/27 accompanied 50-60 mph gusts. This strong wind drifted recent snow into slabs that could avalanche on steep slopes. Early season snow means we need to be thinking about and managing avalanche hazard when we travel in the mountains. Photo: GNFAC

Backcountry.com did a social media survey and found that many of us could use an avalanche class. Don't hesitate to sign up for one. Even a one-hour avalanche awareness class is a great place to start. Check out our Education Calendar for an expanding list of classes being offered in southwest Montana. Many are free.

Wind was blowing and drifting recent snow in the Bridger Range the morning of October 15th. Photo: B. VandenBos

Snow on Lone Mtn. on the morning of October 14th. Photo: B. VandenBos

By morning of October 11 most mountain ranges were white at the higher elevations. This picture of Saddle Peak was taken from Stone Creek up Bridger Canyon. About .6-.8" of precipitation fell throughout southwest Montana. The Fisher Creek Snotel outside of Cooke City shows 6" of snow fell at 9,100 feet. Only time will tell what melts and what sticks around, but it sure is a good sign! Photo: GNFAC