Quick report
- Cracking
- isolated
- Collapsing
- Observed
2nd snowboarder triggered a persistent slab from a wind lip/cornice feature in a relatively low angle location that propagated into a steep slope and flushed the gully below, sympathetically triggering a secondary avalanche.
Very minor cracking around skis on up track.
Weather
- Air Temp
- 29°
- Cloud Cover
- overcast
- Wind Loading
- moderate
- Rain Elevation
- 1400’
- Recent Snowfall
- ~1’
- Snow Avail For Transport
- large amounts
Latter portion of decent snowstorm
Snowpack
Deep skin track trail breaking. Obvious wind transport.
Avalanche
- Size
- D1.5 R1
- Type
- HS
- Aspect
- SE
- Trigger
- AR
- Elevation
- 3200 ft
Forecasters visited this avalanche on 1/15. We found a 1-3.5' thick persistent slab HS-ARu-D2-O, NE aspect (only possible sight leeward aspect on that ridge which was super loaded) that was 40x40 ft, which sympathetically triggered another wind slab SS-ARy-D2-O on a SE/E aspect and failed 12-16" deep and was approximately 40'x200'. We performed a crown profile. Info can be found in the observations from 1.15.25