Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Zack Wentz
Observation Date:
February 19, 2021
Submitted:
February 19, 2021
Zone or Region:
West North
Activity:
Skiing/Snowboarding
Location:
South and North Side of Huntoon

Triggered Avalanches

Did you trigger any avalanches? 
Yes
Was it intentional? 
No
Avalanche Type:
Hard Slab
Size:
Size 2: Could bury, injure, or kill a person
Elevation:
Above treeline
Aspect:
N
Comments:
Location: Just above Hwy 542 coming off Huntoon Ridge. Depth: Approx. 41cms Width: 100 feet Length: 50 feet

Signs of Unstable Snow

None reported

Observations

Avalanche Obs: See above. Triggered a sz 2 storm slab on a wind loaded feature off of Huntoon Point. Visibility was poor so we couldn’t capture a good photo, but the crown depth was approx. 41cms.

Snowpack Obs: Numerous hand shears reported sudden planar shears down 41cms on Feb. 11th interface. Upper snowpack was generally right side up except in wind loaded places; generally ranging from 15-20cms of F-4F- snow, and gradually increasing in density.

Weather Obs: Mix sun & cloud. Strong solar input when sun was out. Light winds from the SW.

Advanced Observations

Observed Avalanche Problem #1: 
Storm Slab
Comments: 
Widespread; up to D2; likely; on Feb. 11th
Observed Avalanche Problem #2: 
Wet Loose
Comments: 
Numerous wet loose on solar aspects today. Sun effect was strong when it came out. Widespread on all steep solar aspects. Up to D1; very likely w/ sun effect.
Observed Avalanche Problem #3: 
Dry Loose
Comments: 
Numerous loose dry avalanches were triggered and entrained a ton of new snow as they slid down each path. Can range in size from .5-1.5 based on length of path and snow entrainment. Likelihood of triggering: Very likely
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