Wind slab near Cooke City from yesterday. Intentionally triggered. North aspect, 10,100'. 1' deep, 20' wide. Photo: B Fredlund
Wind slab near Cooke City from yesterday. Intentionally triggered. North aspect, 10,100'. 1' deep, 20' wide.
Ice Cream Scoop on Skiers Left Side in Gully, North Aspect, 9280'
SS-ASu-R1-D1-S
One of the few spots on the gully where there are no trees as a wind block on the skiers left (south) side. Noticed a few cornices on south side of gully where it is exposed to W/SW/S winds. Skier took a left turn under cornices to scrub speed and released a 6-10" windslab 40' wide which ran 10' at most. Super soft and easy to ski through.
From email: "Ski touring near Cooke City today we intentionally triggered a storm slab/ wind slab on a steep north aspect around 9600'. It was about 6" deep, and 30' wide."
Wind slab near Cooke City from yesterday. Intentionally triggered. North aspect, 10,100'. 1' deep, 20' wide. Photo: B Fredlund
Skier took a left turn under cornices to scrub speed and released a 6-10" windslab 40' wide which ran 10' at most. Super soft and easy to ski through. Photo: J Lee
From email: "Ski touring near Cooke City today we intentionally triggered a storm slab/ wind slab on a steep north aspect around 9600'. It was about 6" deep, and 30' wide." Photo: B Fredlund
Today we noticed these natural small wind slabs on Mt Henderson. Photo: J Mundt
Understanding Avalanche Safety Preparedness – 5-Minute Survey for Motorized Users
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As we rode, we dug a few snowpits looking for the weak layer that we found yesterday buried about 2 feet deep. While we were able to find this layer, we only got propagation in one of three tests (ECTP 26, E aspect, 9070'). Photo: GNFAC
We noted one avalanche on the Fin that likely occurred yesterday or early this morning from a wind slab or cornice fall. Photo: GNFAC
Photo of a recent natural avalanche north of Cooke City, observed today (3/23/25). A S, SE aspect in Sheep Creek at about 9000'. Photo: B Fredlund
Today we saw a D2 slab avalanche at Goose Lake, E facing, 10800 ft. We estimate this avalanche to have ran in the early hours of 3/17. Photo: BPG
No fresh avalanche activity observed. Attached is a photo of the only sign of a recent avalanche we could find. (an old crown on an East aspect at 9600'). Photo: B Fredlund
Avalanche on the SE face of Scotch Bonnet in Tragenic Bowl and one on the NE face of Wolverine. They both broke 2-4’ deep. The avalanche on Wolverine slide aprx 1500’. Both were in wind loaded areas at upper elevations. Photo: BPG
"Today I triggered a D1 dry loose avalanche on a E facing 35 degree slope, 9300 ft on Mt Henderson. The new snow is very low density and is not bonding well to the old interface. I also observed some more dry loose activity/small wind slabs on Sheep Mt, NE facing, 10400 ft."
Near Cooke City on Mar 14 there was 6" of new snow and wind was calm, even along the ridge near regularly wind-loaded slopes, and there was no snow blowing off ridgelines. The photo shows a slope that normally receives a lot of wind effect, but the new snow is unaffected indicating the wind has been calm. Photo: GNFAC
Dug a pit on a northeast facing slope, 9300' (profile and pic attached) near Cooke City. Snow depth was 7-8 feet. 6" of new snow was right side up. Below the new snow was a soft (1F-) melt-freeze crust with soft decomposing and slightly faceted particles below. ECTN13 broke below the crust. Below that the snowpack was 1F to P+ hard and lacked weak layers. The Feb 4 dirt layer was clearly visible. Photo: GNFAC
Today I observed multiple small wind slab avalanches off Woody Ridge. NE and E facing, 10000 ft. Max size D1. Photo: BPG
Today I observed multiple small wind slab avalanches off Woody Ridge. NE and E facing, 10000 ft. Max size D1. Photo: BPG
Many dry loose slides on Cooke Peak in Hayden Creek. Photo: BPG
We also witnessed a falling cornice today that washed some snow through rocks. Be aware of what's above you.
Above Goose Creek -hard, dense, strong, and deep snow. Facets from late January are 1F+ hardness
Fresh wind slab avalanche seen this afternoon, possibly rider triggered. Photo: N. Meyers
On Feb 24 we saw at least 3 rider triggered wind slabs, 4-5 natural wind slab avalanches, and a couple large cornice falls. Strong wid had affected almost every piece of terrain, scouring some slopes, loading others, just stiffening the slab in many areas, and forming fresh drifts on every convex roll and along the edges of trails. Riding was still soft and fairly consistent in many areas. Photo GNFAC
On Feb 24 we saw at least 3 rider triggered wind slabs, 4-5 natural wind slab avalanches, and a couple large cornice falls. Strong wid had affected almost every piece of terrain, scouring some slopes, loading others, just stiffening the slab in many areas, and forming fresh drifts on every convex roll and along the edges of trails. Riding was still soft and fairly consistent in many areas. Photo GNFAC
On Feb 24 we saw at least 3 rider triggered wind slabs, 4-5 natural wind slab avalanches, and a couple large cornice falls. Strong wid had affected almost every piece of terrain, scouring some slopes, loading others, just stiffening the slab in many areas, and forming fresh drifts on every convex roll and along the edges of trails. Riding was still soft and fairly consistent in many areas. Photo GNFAC
On Feb 24 we saw at least 3 rider triggered wind slabs, 4-5 natural wind slab avalanches, and a couple large cornice falls. Strong wid had affected almost every piece of terrain, scouring some slopes, loading others, just stiffening the slab in many areas, and forming fresh drifts on every convex roll and along the edges of trails. Riding was still soft and fairly consistent in many areas. Photo GNFAC
On Feb 24 we saw at least 3 rider triggered wind slabs, 4-5 natural wind slab avalanches, and a couple large cornice falls. Strong wid had affected almost every piece of terrain, scouring some slopes, loading others, just stiffening the slab in many areas, and forming fresh drifts on every convex roll and along the edges of trails. Riding was still soft and fairly consistent in many areas. Photo GNFAC
On Feb 24 we saw at least 3 rider triggered wind slabs, 4-5 natural wind slab avalanches, and a couple large cornice falls. Strong wid had affected almost every piece of terrain, scouring some slopes, loading others, just stiffening the slab in many areas, and forming fresh drifts on every convex roll and along the edges of trails. Riding was still soft and fairly consistent in many areas. Photo GNFAC
While looking for a recent avalanche from the flat bench above we triggered a similar sized slide directly adjacent to the previous slide. They broke on weak layers of facets and surface hoar that formed at the end of January. 2-3 feet deep and 150-200' wide. Photo: GNFAC
While looking for a recent avalanche from the flat bench above we triggered a similar sized slide directly adjacent to the previous slide. They broke on weak layers of facets and surface hoar that formed at the end of January. 2-3 feet deep and 150-200' wide. Observing the snowpack that caused the avalanche. Photo: GNFAC
While looking for a recent avalanche from the flat bench above we triggered a similar sized slide directly adjacent to the previous slide. They broke on weak layers of facets and surface hoar that formed at the end of January. 2-3 feet deep and 150-200' wide. Photo: GNFAC
While looking for a recent avalanche from the flat bench above we triggered a similar sized slide directly adjacent to the previous slide. They broke on weak layers of facets and surface hoar that formed at the end of January. 2-3 feet deep and 150-200' wide. Photo: GNFAC
While looking for a recent avalanche from the flat bench above we triggered a similar sized slide directly adjacent to the previous slide. They broke on weak layers of facets and surface hoar that formed at the end of January. 2-3 feet deep and 150-200' wide. Photo: GNFAC
An avalanche that was triggered two days ago (Feb 22), remotely from flat terrain above a steep slope, on the northeast end of Mt. Abundance. Photo: GNFAC
A rider triggered a small avalanche near Lulu Pass. No one was caught in the slide. Photo: N. Gaddy
A rider triggered a small avalanche near Lulu Pass. No one was caught in the slide. Photo: N. Gaddy
On Feb 23 We went up Republic Creek to look at the stability of snow that has fallen over the last 2-3 weeks. We were able to easily to trigger a couple wind slab avalanches on test slopes. Photo: GNFAC
On Feb 23 We went up Republic Creek to look at the stability of snow that has fallen over the last 2-3 weeks. We were able to easily to trigger a couple wind slab avalanches on test slopes. Photo: GNFAC
On Feb 23 We went up Republic Creek to look at the stability of snow that has fallen over the last 2-3 weeks. We found a thin layer buried 2’ deep that showed potential to propagate and slide. We dug down 4 feet, just below the dirt layer that was deposited earlier this month. We got an ECTP30 that broke about 8" above that dirt layer. This was either on a thin layer of facets or preserved lower density dendrites. Photo: GNFAC
Today we observed a couple day old wind slabs in steep SW facing terrain on Mt Zimmer. Photo: BPG
Wet loose occurred sometime today between 11-2 pm on S facing terrain nearby. Photo: BPG
Skier in Republic Creek observed a natural (wind/storm slab) avalanche on an east aspect at ~9200ft. Photo: R. Minton
Tonight
Low: 18 °F
Mostly Clear
Sunday
High: 44 °F
Sunny
Sunday Night
Low: 23 °F
Mostly Clear
Monday
High: 47 °F
Mostly Sunny
Monday Night
Low: 32 °F
Mostly Cloudy
then Chance
Snow Showers
Tuesday
High: 41 °F
Snow Showers
Likely
Tuesday Night
Low: 27 °F
Chance Snow
Showers
Wednesday
High: 40 °F
Chance Snow
Showers
Wednesday Night
Low: 22 °F
Partly Cloudy
Hyalite Road Closure
The Hyalite Canyon Road is closed to ALL MOTORIZED VEHICLES until the morning of May 16. This is a regular annual road closure to reduce road damage during the spring thaw. Bicycle and foot traffic are allowed. Contact the Bozeman FS Ranger District for more info.