Shed 7 East

Location Name: 
BNSF Avalanche Safety - Snowslip Mtn. GNP
Observation date: 
Wednesday, February 3, 2021 - 21:45
Is this an Avalanche Observation: 
Yes
Observation made by: Public

Location

Tabs

Quick Observation
  • Toured up the Shed 6/7 ridge and conducted snow profile in the starting zone of Shed 7 East.
  • Surface snow conditions in this terrain feature consisted of ~16” of accumulated snowfall on the January 13th crust
  • Snow depths averaged ~75” or less at this location ~6300’ a.s.l
  • Objectives were to:
    • Observe snowpack instability in and around the Shed 7 area.
    • Assess snow surface conditions.
    • Conduct snow profile(s) in the upper starting zones of Shed 7 East.
  • No recent avalanche activity observed in the Shed 7 area
  • Recent debris did seem to be present in the “Larry” path located on the north face of “Devils Hump.”
  • Larry path debris appeared to have terminated approximately 2/3rds distance to the Canyon floor.
  • Minor cracking in upper ~6” of snowpack. No audible failures, and/or collapses observed.
  • ~4500’ and below...Breakable surface crust under 2-3” moist snow           
  • ~4500 to 5800’…3-6” moist new snow on crust and moist facets/snow beneath crust to the ground.                         
  • ~5800 to 6300+…Approximately 10-18” of accumulated snow on the January 13th crust with a thin layer of facets found above crust.
  • Wind loading on easterly aspects observed at ridgeline elevation.
  • Snow profile conducted at ~6300’ on east aspect of Shed 7 East. (Pit profile photo).
  • Overcast or broken skies for the entire field day.
  • Good visibility at all elevations.
  • Sporadic snowfall throughout the day with only trace accumulations.
  • Air temperatures were in the upper 20s (0F) at lower elevations and low 20s (0F) at upper elevations
Snowpack, Avalanche, Weather Images: 
Travel Details
Region: 
Flathead Range/Glacier National Park - John F. Stevens Canyon
Activity: 
Skiing
Avalanche Details
Avalanche Details: 
Date and Time of Avalanche: 
Monday, February 1, 2021 - 12:00
Number of avalanches: 
1
Avalanche Type: 
Unknown
More information or comments about the avalanche: 

Uncertainty high. All we could really discern was what looked like a line of debris extending down the path, pushing down/burying the brush.

Hide Trigger
Trigger: 
natural
Hide Terrain
Aspect: 
North
Starting Elevation: 
near-treeline
Hide Size
Destructive Size: 
D2 Could bury, injure, or kill a person.
Avalanche Length (Vertical Run): 
1000ft.
Avalanche Location: