Infinity Avalanche

Location Name: 
BNSF Avalanche Program-Snowslip Mtn-Glacier Park
Observation date: 
Tuesday, February 5, 2019 - 21:00

Is this an Avalanche Observation: 
Yes
Observation made by: Public

Location

Tabs

Quick Observation

Slab avalanche ran in a path known as Infinity on the south face of Snowflip Mountain sometime early this morning. Size D2 and ran about 3/4 distance down the path terminating above the rail grade. Unsure about the failure plane/weak layer? Might have just been a wind slab from recent loading or may have stepped down into a persistent weak layer deeper in the snowpack. No other avalanche activity observed.

Snowpack, Avalanche, Weather Images: 
Travel Details
Region: 
Flathead Range/Glacier National Park - John F. Stevens Canyon
Avalanche Details
Avalanche Details: 
Date and Time of Avalanche: 
Tuesday, February 5, 2019 - 04:00
Avalanche Type: 
Unknown
Failure Plane/Weak Layer: 
Unknown
More information or comments about the avalanche: 

Observations today were from the highway, so a fair amount of uncertainty regarding the avalanche. Looked like soft slab debris (more fine, not too chunky) so thinking just a wind slab from recent loading. Crown was starting to fill in, but at it thickest looked to be nearing 3+ feet thick. Our snowpack isn't very deep this season, so can't rule out that this failed on a deeper persistent weak layer.

Hide Trigger
Trigger: 
natural
Hide Terrain
Aspect: 
South
Starting Elevation: 
near-treeline
Hide Size
Destructive Size: 
D2 Could bury, injure, or kill a person.
Relative Size: 
R3 Medium
Crown Height: 
3 ft
Avalanche Length (Vertical Run): 
1400ft.
Avalanche Width (Average width): 
150ft.
Avalanche Location: