Trip Planning for Bridgers

Winds have worked over many slopes near the Throne. We found some slopes stripped nearly to dirt with the snow blown off to who knows where, and others had wind-sculpted sastrugi. Trees were broken off, and debris littered the snow surface. Photo: GNFAC

We triggered a small soft slab avalanche on a south facing aspect around 7800'. This avalanche broke in a wind drift, 4" deep in low density new snow, likely on a sun crust or near-surface facets. Photo: GNFAC

We triggered a small soft slab avalanche on a south facing aspect around 7800'. This avalanche broke in a wind drift, 4" deep in low density new snow, likely on a sun crust or near-surface facets. Photo: GNFAC

Strong winds transporting snow on Saddle Peak. Photo: BBSP 

Recent natural avalanche: on an easterly aspect around 9200', on Hardscrabble Peak in the northern Bridgers. Photo: B Fredlund 

On 01/08 my partner and I skied into Frazier basin in the northern Bridgers, we skied the love chutes east down and overall the descent was pretty wind hammered from a downward wind. Once at the lake we took the Frazier return route where we found much better ski conditions in the corridor and decided to lap some of the features. We ended up triggering a small wind slab at around 8k on a NE aspect that broke about a foot deep and ran about 25 yards. Very dense wind slabs were forming on a lot of the aspects getting out of Frazier and we opted to not test our luck any further for the day. 
 

Photo: T. Johns

On 01/08 my partner and I skied into Frazier basin in the northern Bridgers, we skied the love chutes east down and overall the descent was pretty wind hammered from a downward wind. Once at the lake we took the Frazier return route where we found much better ski conditions in the corridor and decided to lap some of the features. We ended up triggering a small wind slab at around 8k on a NE aspect that broke about a foot deep and ran about 25 yards. Very dense wind slabs were forming on a lot of the aspects getting out of Frazier and we opted to not test our luck any further for the day. 
 

Photo: T. Johns

On 01/08 my partner and I skied into Frazier basin in the northern Bridgers, we skied the love chutes east down and overall the descent was pretty wind hammered from a downward wind. Once at the lake we took the Frazier return route where we found much better ski conditions in the corridor and decided to lap some of the features. We ended up triggering a small wind slab at around 8k on a NE aspect that broke about a foot deep and ran about 25 yards. Very dense wind slabs were forming on a lot of the aspects getting out of Frazier and we opted to not test our luck any further for the day. 

Photo: T. Johns

Wind slab around 3-12" deep. NE aspect at 8,000 feet. Occurred sometime on January 8th.

A skier intentionally triggered an avalanche in Argentina bowl below south Saddle Peak. The avalanche broke 2 feet deep and ran 1000–2000 vertical feet piling debris 20 feet deep in the run out zone and breaking trees. Photo: anonymous

A skier intentionally triggered an avalanche in Argentina bowl below south Saddle Peak. The avalanche broke 2 feet deep and ran 1000–2000 vertical feet piling debris 20 feet deep in the run out zone and breaking trees. Photo: anonymous

A skier intentionally triggered an avalanche in Argentina bowl below south Saddle Peak. The avalanche broke 2 feet deep and ran 1000–2000 vertical feet piling debris 20 feet deep in the run out zone and breaking trees. Photo: anonymous

A skier intentionally triggered an avalanche in Argentina bowl below south Saddle Peak. The avalanche broke 2 feet deep and ran 1000–2000 vertical feet piling debris 20 feet deep in the run out zone and breaking trees. Photo: anonymous

On Jan 5 we saw this ~150' wide, 1'deep storm slab in Truman Gulch. GNFAC

On Jan 5 With decent visibility we drove up Bridger canyon to Battle Ridge to look for recent avalanches. The most noteworthy was a slab 500'+ wide, 2'+ deep in Argentina Bowl (photo), 1 day old probably. Photo: GNFAC

Photo: H Meyers 

Photo: H Meyers

Saw a small recent looking storm slab avalanche that appeared to be naturally triggered above the road on a south facing slope around 6000'.  It ran all the way across the slope ~30' wide and  ~4" deep within the recent snow.  The snow didn't move far enough to reach the road.  The slope was quite steep-- we didn't measure but I'd estimate 40*.

Photo: H Meyers

We triggered a wind slab. It propagated about 200 ft wide and was 3 ft at the deepest point. Interestingly on the edges and near the bottom (downhill side) of the slab it was only a few inches deep. It broke on the interface between the wind loaded snow and the light and dry snow we received a few days ago. Photo: A Shafer

We triggered a wind slab. It propagated about 200 ft wide and was 3 ft at the deepest point. Interestingly on the edges and near the bottom (downhill side) of the slab it was only a few inches deep. It broke on the interface between the wind loaded snow and the light and dry snow we received a few days ago. Photo: A Shafer

We triggered a wind slab. It propagated about 200 ft wide and was 3 ft at the deepest point. Interestingly on the edges and near the bottom (downhill side) of the slab it was only a few inches deep. It broke on the interface between the wind loaded snow and the light and dry snow we received a few days ago. Photo: A Shafer

Overview photo E facing storm slab N Bridgers 1 Jan 2024

 E-facing storm slab N Bridgers 1 Jan 2024

There were many large storm slab avalanches in the northern Bridgers on Monday and Tuesday during the avalanche warning. Photo: C Kussmaul

Bottom of the Ramp, E aspect, 7900'. We found 24" of new snow which had nearly doubled the snowpack, leaving over five and half foot deep (HS 171) snowpack in this area. We got propagation (ECTP 24) at the storm snow interface. Photo: GNFAC

image of surface hoar crystals seen in the snowpit wall

Digging snowpit near top of the ramp Dec 22

Image of snowpit from just south of the top of the ramp on Dec 22

Avalanche in Hourglass chute above Wolverine. It looked to be triggered by an intentional cornice drop, was around 12 inches deep at the crown, 100' wide and ran 850' vertical feet. It looked around three days old.

Dug a pit at 7600 ft on a NE facing slope. Full propagation on isolation of the column on the layer of concern about 16 inches down in this zone. Photo: Anonymous

Photo of a natural on Saddle Peak taken from the highway. Slide occured on 12/18 and was previously reported. Photo: GNFAC

There was a natural avalanche on Saddle Peak on Wednesday, December 18. Strong winds ripped through new snow and loaded many slopes. The avalanche broke an estimated 250 feet wide, 1-3 feet deep, and ran 1500 vertical feet. Photo: T Barber

HS-ASr-R1-D1-I

Fraizer Basin, 8500', North facing, 35-37 degree slope, 1pm

Photo: T Guarino

Plumes of drifting snow in the Bridger Range as strong winds blasted the mountains. Photo: GNFAC

Triggered a small slide (r2 d2) in a north east facing chute at around 8300 ft. Photo: J Alford

Triggered a small slide (r2 d2) in a north east facing chute at around 8300 ft. Photo: J Alford

These avalanches occurred 12/15. They broke naturally towards the end of a period of heavy snowfall that totaled 10"=1.22" SWE. Photos taken 12/16 at 1045-1100. Photo: GNFAC

These avalanches occurred 12/15. They broke naturally towards the end of a period of heavy snowfall that totaled 10"=1.22" SWE. Photos taken 12/16 at 1045-1100. Photo: GNFAC