Northern Gallatin

Collapsing, cracking and recent natural avalanche in northern Bridgers

Flathead Pass
Bridger Range
Code
Latitude
45.96840
Longitude
-111.02100
Notes

Skiers around Frazier Basin and also at Flathead Pass reported collapsing and cracking as they skied. From Flathead pass, "Lots of collapses and whumphs. Obvious soft slab fractures in new and drifted snow. Saw evidence of point release avalanches on steeper terrain around cliffs. Also saw a crown that appeared to have triggered on the new wind loaded snow, NE aspect. It was approx. 200 feet below a steep rocky ridge."

Number of slides
0
Number caught
0
Number buried
0
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year

Natural Avalanche in Pinnacles, Bridger Range

Saddle Peak
Bridger Range
Code
SS-N
Aspect
E
Latitude
45.79430
Longitude
-110.93600
Notes
"I took this photo from the highway today just before noon 2/4/20. Looked pretty fresh and not blown in much and the winds were howling. Largest part of the crown looked 6-8' tall right in the center. It connected across a pretty low angle shoulder to pull out the northern bowl."
Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
Problem Type
Wind-Drifted Snow
Slab Thickness
48.0 inches
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

"I took this photo from the highway today just before noon 2/4/20. Looked pretty fresh and not blown in much and the winds were howling. Largest part of the crown looked 6-8' tall right in the center. It connected across a pretty low angle shoulder to pull out the northern bowl." Photo: R. Griffen
Bridger Range, 2020-02-05

Natural avalanche near Ross Peak, Bridgers

Ross Peak
Bridger Range
Code
SS-N
Aspect
E
Latitude
45.85860
Longitude
-110.95600
Notes

This avalanche was seen on Tuesday, Feb 4 and likely released on Monday from the wind loading.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
Problem Type
Wind-Drifted Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

"Saw this looking south from top of the ramp into Jones creek. Looks to be just new snow but couldn’t see the whole crown or the slide path." Photo: Andrew Dombroski

Bridger Range, 2020-02-04

Natural Avalanches on the west side of the Bridger Range

Truman Gulch
Bridger Range
Code
SS-N-R3-D2.5
Aspect
W
Latitude
45.81390
Longitude
-110.93300
Notes

1.  "I saw two crowns from the ridge at 1430 today (2/4). One on the lower heavily wind loaded shoulder and one up high in the middle of the path. Not sure if they connected, or were separate. R3-D2.5. 2-4’ deep. The higher one was partially drifted in. My guess is ran yesterday with east winds or early today."

2.  "Saw this looking south from top of the ramp into Jones creek. Looks to be just new snow but couldn’t see the whole crown or the slide path."

Number of slides
3
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
3
D size
2.5
Problem Type
Wind-Drifted Snow
Slab Thickness
36.0 inches
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year