19-20

Wind Slab avalanche on Mt. Blackmore

Mt Blackmore
Northern Gallatin
Code
Latitude
45.44440
Longitude
-111.00400
Notes

Natural wind slab avalanche on the N face of Mount Blackmore on 11/10/2019.

From email: "Noted recent activity on the N face which likely happened yesterday during the storm; upper half of the avalanche and crown had been scoured by wind, but the toe of the debris was still visible and had traveled quite far"

Number of slides
1
Number caught
0
Number buried
0
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
19-20

Cracking Wind Slabs at Bridger

Bridger Bowl
Bridger Range
Code
Latitude
45.81560
Longitude
-110.92300
Notes

Two parties reported shooting crack at Bridger Bowl today (11/11/2019).

"While skinning up to the top of Powder Park lift at Bridger, we had roughly 15' cracks propagate on an E/SE aspect. A snowpit showed roughly 8" of wind slab above a few inches of facets, on top of last week's rain crust."

Number of slides
1
Number caught
0
Number buried
0
Images
Cracking at Bridger
Cracks on E/SE aspect at Bridger Bowl
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
19-20

"While skinning up to the top of Powder Park lift at Bridger, we had roughly 15' cracks propagate on an E/SE aspect. A snowpit showed roughly 8" of wind slab above a few inches of facets, on top of last week's rain crust." November 11, 2019.

Photo: G. Lawrence

Avalanche Details: Cracking Wind Slabs at Bridger
Forecast link: GNFAC Avalanche Forecast for Tue Nov 12, 2019GNFAC Avalanche Forecast for Thu Nov 14, 2019
Bridger Range, 2019-11-11
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    • From obs.: "A widespread rain crust left the whole [Beehive] basin glazed like a Krispy Kreme donut to ~1000'. The consistently breakable crust thinned with elevation yet ensured lack-luster skiing conditions throughout the entire basin. Light winds [and] increasing cloud cover... worked together to keep solar input at bay and minimized the break-down or softening of the surface crust. Noted 2 small (D.5 - R1) old natural WL avalanches on due south aspects at ~10,100' probably triggered from cliff bands during the warm up last week...." Photo: Zachary Miller


    Forecast link: GNFAC Avalanche Forecast for Tue Nov 12, 2019GNFAC Avalanche Forecast for Thu Nov 14, 2019
    Northern Madison, 2019-11-10
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