Northern Gallatin

History Rock

Date
Activity
Skiing

Toured History Rock today and skied the upper and middle meadows. Saw around 6 inches of storm snow sitting on top of faceted grains. The upper meadow snowpack varied from 30-50 cm with the deeper snow being closer to the bottom. It was all unconsolidated snow and did not observe any instabilities. Pretty good skiing!

Region
Northern Gallatin
Observer Name
Nick Roe

Small dry loose Bridgers, Beehive, Cooke City

Beehive Basin
Bridger Range
Code
L
Latitude
45.34070
Longitude
-111.39100
Notes

Natural and skier triggered dry loose snow avalanches reported near Bridger Bowl, Beehive and Cooke City. Some of these entraining faceted old snow.

Number caught
0
Number buried
0
Avalanche Type
Loose-snow avalanche
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
20-21

Cracking drift in Bridgers

The Ramp
Bridger Range
Code
SS-ASc-R1-D1
Elevation
8550
Aspect
E
Latitude
45.82880
Longitude
-110.93100
Number of slides
0
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
Trigger Modifier
c-A controlled or intentional release by the indicated trigger
R size
1
D size
1
Problem Type
Wind-Drifted Snow
Images
Cracking in drifted snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year
20-21

Light wind created soft drifts of new, low density snow near the ridgeline in the Bridger Range. This wind slab easily cracked when touched with skis, 20 feet along the ridge and 5-10 feet down, but didn't slide. This is a sign drifts will be unstable as they grow with more snow and wind. Photo: GNFAC

Avalanche Details: Cracking drift in Bridgers
Forecast link: GNFAC Avalanche Forecast for Sun Dec 13, 2020GNFAC Avalanche Forecast for Mon Dec 14, 2020
Bridger Range, 2020-12-12
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