A small loose-wet avalanche on a S facing aspect on Eglise Rock was observed that likely broke in the last day or two. Photo: GNFAC 12/4/2024
Trip Planning for Northern Madison
Past 5 Days
Moderate
Moderate
Considerable
Considerable
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Relevant Avalanche Activity
WL-N-R1-D1-I
Elevation: 9,300
Aspect: S
Coordinates: 45.1960, -111.4360
Caught: 0 ; Buried: 0
On 12/4, from the junction of Buck Ridge and Third Yellow Mule, we observed one small loose-wet avalanche (R1 D1) on a S facing aspect on Eglise Rock that likely broke in the last day or two of hot temperatures.
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WL
Aspect: S
Coordinates: 45.2760, -111.4360
Caught: 0 ; Buried: 0
From BSSP "On steep solar aspects, the surface snow became unstable and low-volume slides ran.
Point releases would entrain the top 3-4”, running on firmer layers below."
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HS-NC-R1-D1-I
Elevation: 9,480
Aspect: E
Coordinates: 45.1719, -111.3740
Caught: 0 ; Buried: 0
"The head of Beaver Creek was scoured nearly to dirt and the cornice is quite large there already. We noted one small wind slab avalanche just below it. We found a similar avalanche in Second Yellowmule that again appeared to be from wind loading. Both appeared to be several days old. We dug a quick pit on a north facing slope in Second Yellowmule and had an ECTN in 85cm of snow. Only the bottom 5cm or so of that pit were sugary and faceted. "
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Relevant Photos
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The head of Beaver Creek was scoured nearly to dirt and the cornice is quite large there already. We noted one small wind slab avalanche just below it. We found a similar avalanche in Second Yellowmule that again appeared to be from wind loading. Both appeared to be several days old. Photo: USFS Bozeman Snow Rangers
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The head of Beaver Creek was scoured nearly to dirt and the cornice is quite large there already. We noted one small wind slab avalanche just below it. We found a similar avalanche in Second Yellowmule that again appeared to be from wind loading. Both appeared to be several days old. Photo: USFS Bozeman Snow Rangers
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Big Sky Ski Patrol triggered a deep slide in the Big Couloir during avalanche mitigation work on 11/28/24: "Summit north peeled the cornice way back to the ridge and took out the upper hanging snowfield before crashing into the Couloir, leaving a 5-6’ tall crown in the chute above the dogleg." Photo: BSSP
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WE facing snow at 8100 ft Cabin Ck
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SE facing snow Cabin Creek
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N facing snow Cabin Creek, 9000 ft
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Big Sky Ski Patrol triggered this avalanche during mitigation work in The Wave on 11/26/24... "2-3' deep on an ice crust just above the ground with a 2# shot in the Upper rodeo. Volume was limited as most of the snow was loaded just underneath the cornice, but still produced a sizeable size 2... Other paths in the Lenin region ran meaty wind slabs, full track with no significant step downs." Photo: BSSP
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Cracking on old, faceted, October snow hundreds of feet long. North facing near treeline. Photo: BSSP
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Intentional, human-triggered avalanche by a ski patrol breaking at the ground on a north facing slope near treeline. Photo: BSSP
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The snowpack remains thin (20-25 inches of mostly unconsolidated base) and there were plenty of rocks and stumps to hit, but coverage was better than I expected (and probably better than most of December 2023). Photo: GNFAC
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On the drive toward Gallatin Canyon this morning, we saw large plumes of snow blowing off the high peaks. We didn't see evidence of recent wind transport on our tour, but I'd be watching out for it. Photo: GNFAC
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Skiers in the upper part of Beehive Basin noted shooting cracks within the wind-drifted snow. Photo: T. Cox
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Inch thick crust on SW slope in Divide Basin. Photo: C. Daniels
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Snowpit at Bridger Bowl on 11/5. Photo: B. VandenBos
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From e-mail: "Photo attached from near top of hyalite peak, 11/2. Cracking in recent hard wind slab, I had to really jump hard to make this. Walked on many other hard slabs that were well bonded. Highly variable snowpack. I think you'd be most likely to get into trouble by popping out a small hard slab pocket like this and getting magic carpeted into some thinly covered terrain." Photo: B. VandenBos
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From obs: "1-3 mm faceting in front of the Montage. Clear skys and mid 20 temps"
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On October 17, rain turned to snow and blanketed the mountains of southwest Montana with a fresh coat of snow. Photo: Yellowstone Club Webcam
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On October 17, rain turned to snow and blanketed the mountains of southwest Montana with a fresh coat of snow. Photo: Bridger Bowl Webcams
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The 26th annual fundraiser for the Friends of the GNFAC is October 25 at the Emerson Cultural Center. More info and tickets at: https://events.eventgroove.com/event/Powder-Blast-2024-101627
Videos- Northern Madison
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Yellowstone Club, Timberline Chair
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