Redoubt Bowl-skiers right chute

Map for Mountain Information Network report: Redoubt Bowl-skiers right chute

Information

Avalanche date/time
Thursday, January 7, 2021 at 15:00
Number of avalanches in this report
1
The size of avalanche
1.5
Slab thickness
25cm
Slab width
7m
Run length
80m
Avalanche Character
  • Deep persistent slab
  • Wind slab
Trigger type
Skier
Trigger subtype
Accidental
Start zone aspect
  • SW
Start zone elevation band
  • Alpine
Start zone elevation
2,500m
Start zone incline
30°
Weak layer crystal type
  • Surface hoar and facets
Crust near weak layer
Yes
Wind exposure
Cross-loaded slope

Comments

In Redoubt Bowl, almost up to the rock band, there was about 20cm of powder on a firm base. Frequent pole test didn't show any major weakness. Once we started into the chute, snow conditions had changed. There was some wind loading on both sides of the chute that were forming a soft slab. Some pole test here showed a hollow and shallow base. Hand shears were showing planar results about 25cm down. We chose to head for the dry ridge, bootpack up in the rocks, and take a conservative route down. We skied the ridge staying in the lower incline area near the rocks. Near the bottom of the ridge, the second rider triggered the slab just as he was cutting back into our safe spot. We let the slide go down and then made our way through the narrowest part of the chute.