24-25

Good Stability Texas Meadows Area

Date
Activity
Skiing

Toured through Bradley's Meadow today and N into the drainage and the backside of Texas Meadows. Approx 6" of dense, new snow. New snow has bonded well and we couldn't get anything to move or sluff. Zero shooting cracks, no collapsing on N, E, or S aspects.   Nice skiing with the existing layer supporting the new snow.

Location (from list)
Brackett Creek
Observer Name
C. Robinson

GNFAC Avalanche Forecast for Mon Apr 21, 2025

Snowpack and Avalanche Discussion

<p><span><span><span><span><span><span>Any avalanche problems will involve the new snow. Otherwise, the snowpack is generally stable and larger avalanches are unlikely. Skiers or riders can trigger </span></span></span></span></span></span><span><span><span><strong><span><span>wind slab avalanches</span></span></strong></span></span></span><span><span><span><span><span><span>, around 4-8” deep, on steep slopes where the 4-5" of new snow has been drifted into thicker or stiffer slabs. Additionally, </span></span></span></span></span></span><span><span><span><strong><span><span>dry loose</span></span></strong></span></span></span><span><span><span><span><span><span> and </span></span></span></span></span></span><span><span><span><strong><span><span>wet loose</span></span></strong></span></span></span><span><span><span><span><span><span> </span></span></span></span></span></span><span><span><span><strong><span><span>avalanches</span></span></strong></span></span></span><span><span><span><span><span><span> are possible to trigger and could run long distances on firm crusts below the new snow. When the sun comes out, the new snow will quickly get wet and easily slide on steep, sunny slopes.</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>On Saturday skiers triggered small wind slab avalanches, 3-6” deep and 10-20’ wide, in the northern Bridgers (</span></span></span></span></span></span><a href="https://www.mtavalanche.com/node/34932"><span><span><span><strong><span… and photos</span></span></u></span></strong></span></span></span></a><span><span><span><span><span><span>) and near Cooke City (</span></span></span></span></span></span><a href="https://www.mtavalanche.com/images/25/small-wind-slab-and-dry-loose-sli…;). Today you might encounter similar drifts, or some slightly larger drifts in areas with more new snow.</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>Slides will be generally small, but any type of avalanche can be hazardous in terrain where they could push you into rocks, trees, over a cliff, or carry you a long way down a steep slope. Before riding steep slopes, assess the terrain for consequences of being knocked over by a small slide.&nbsp;</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>Be on the lookout for fresh drifts and avoid them, especially in consequential terrain. Monitor the snow surface for wet snow avalanche potential, and if it is becoming moist find lower angle terrain or shadier slopes with drier snow.&nbsp;</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>Daily forecasts are done for the season, but avalanches will continue. Remain diligent with your snowpack and terrain assessments, and be ready to adapt your plans to changing conditions. See below for more general spring snowpack and travel advice.</span></span></span></span></span></span></p>

Announcements

The Hyalite Canyon Road is closed to ALL MOTORIZED VEHICLES until May 16. This is a regular annual road closure to reduce road damage during the spring thaw. Bicycle and foot traffic are allowed.

small wind slab and dry loose slides

Sheep Mountain
Cooke City
Code
SS-AS-R1-D1-I
Elevation
10200
Aspect
NE
Latitude
45.07220
Longitude
-109.92800
Notes

Near Cooke City on 4/19 skiers triggered a dry loose avalanche and a small wind slab avalanche. The wind slab broke in a drifted pocket near the base of cliffs, 3-6" deep x 10' wide. Northeast aspect, 10,200'.

Number of slides
2
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
R size
1
D size
1
Bed Surface
I - Interface between new and old snow
Problem Type
Wind Slab
Slab Thickness
4.0 inches
Vertical Fall
150ft
Slab Width
10.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Skier-triggered small soft slab, northern Bridger Range

Northern Bridgers
Bridger Range
Code
SS-AS-R1-D1-I
Elevation
7700
Aspect
NE
Latitude
45.91960
Longitude
-110.97600
Notes

Today (Saturday, 4/19), I triggered a small soft-slab avalanche at about 7,700' on a E-NE aspect on the headwall between Frazier Lake and Angier Lake in the northern Bridgers. The slide was maybe 6" deep, 20' wide and ran 100-200 feet and involved only the new storm snow over the icy, thick crust underneath. No one was caught or injured, though I had a bit of a scare because my dog was right in the path (luckily she outran it). We had gone up with the intention of skiing the Ainger "Love Chutes", but bailed partway up when that whole aspect turned out to be breakable crust. However, we had beta from another party that conditions on the Frazier-Angier headwall were good, so decided to check that out. We skinned up without incident, following a well-set skin track that followed the line of least resistance; snow surface was variable but seemed stable. Coming down, we mostly followed the ascent route, but towards the end I was tempted onto a fun-looking, untracked stash a bit to skier's left, that seemed only a tad steeper than the ascent line. A few turns into this line is when I triggered the slide, right at the steepest part (mid-high 30s). It definitely took me by surprise given that we'd been skiing great, stable powder in the Bridgers the past couple days. No harm done but definitely a good wake-up call! 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
R size
1
D size
1
Bed Surface
I - Interface between new and old snow
Problem Type
Wind Slab
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Wet loose in northern bridgers

Fairy Lake
Bridger Range
Code
WL-N-R1-D1
Latitude
45.90430
Longitude
-110.95800
Notes

Meant to submit this yesterday (4/18), saw this one wet loose slide that naturally started off some rocks. Decent size by the bottom. Other than that, just some spiff. Surprisingly didn’t see any big wind slabs trigger, despite the widespread wind effect in the northern Bridger’s. Lots of wind scour on southerly aspects. Northern aspects had wind loading

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Wet loose-snow avalanche
Trigger
Natural trigger
R size
1
D size
1
Problem Type
Loose Wet
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

GNFAC Avalanche Forecast for Sun Apr 20, 2025

Snowpack and Avalanche Discussion

<p><span><span><span><span><span><span>Today the snowpack is generally stable and avalanches are unlikely. You might encounter isolated areas of unstable snow just a few inches deep which could be hazardous if a small slide pushes you into rocks, trees or over a cliff. If you travel in steep, higher consequence terrain, be cautious of areas where recent snow has been drifted into a stiffer slab, or where the snow surface becomes wet more than a few inches deep.</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>Yesterday skiers triggered small wind slab avalanches, 3-6” deep and 10-20’ wide in the northern Bridgers (</span></span></span></span></span></span><a href="https://www.mtavalanche.com/node/34932"><span><span><span><strong><span… and photos</span></span></u></span></strong></span></span></span></a><span><span><span><span><span><span>) and near Cooke City (</span></span></span></span></span></span><a href="https://www.mtavalanche.com/images/25/small-wind-slab-and-dry-loose-sli…;). Today you might encounter similar drifts in areas with a couple inches of new snow, or where snow from earlier in the week remained dry on high, northerly facing slopes.</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>The new snow from earlier in the week got warm and wet on many slopes yesterday, and the snow surface should be refrozen and stable this morning. Cloudy skies will minimize wet loose avalanche potential today, but above freezing temperatures and possible rain this afternoon will create a wet snow surface in some places. Small wet slides could be triggered in isolated areas, especially where there are a few inches of new snow this morning that could easily become moist with brief sun or above freezing temperatures.</span></span></span></span></span></span></p>

<p><span><span><span><span><span><span>Today the snowpack is generally stable and avalanche danger is LOW. Be on the lookout for isolated areas of unstable wet snow and small drifts, and consider the consequences of being knocked over by a small slide.</span></span></span></span></span></span></p>

Hyalite Road Closure 

The Hyalite Canyon Road is closed to ALL MOTORIZED VEHICLES until May 16. This is a regular annual road closure to reduce road damage during the spring thaw. Bicycle and foot traffic are allowed.

"Today (Saturday, 4/19), I triggered a small soft-slab avalanche at about 7,700' on a E-NE aspect on the headwall between Frazier Lake and Angier Lake in the northern Bridgers. The slide was maybe 6" deep, 20' wide and ran 100-200 feet and involved only the new storm snow over the icy, thick crust underneath. No one was caught or injured, though I had a bit of a scare because my dog was right in the path (luckily she outran it)." 

Bridger Range, 2025-04-20

"Today (Saturday, 4/19), I triggered a small soft-slab avalanche at about 7,700' on a E-NE aspect on the headwall between Frazier Lake and Angier Lake in the northern Bridgers. The slide was maybe 6" deep, 20' wide and ran 100-200 feet and involved only the new storm snow over the icy, thick crust underneath. No one was caught or injured, though I had a bit of a scare because my dog was right in the path (luckily she outran it)." 

Bridger Range, 2025-04-20

Near Cooke City on 4/19 skiers triggered a dry loose avalanche and a small wind slab avalanche. The wind slab broke in a drifted pocket near the base of cliffs, 3-6" deep x 10' wide. Northeast aspect, 10,200'. Photo: GNFAC

Cooke City, 2025-04-20