Avalanche: Other Regions

Location: Whittier/ Blackstone Bay

Route & General Observations

Salt water cruise from Whittier into Blackstone Bay.

Avalanche Details
If this is an avalanche observation, click yes below and fill in the form as best as you can. If people were involved, please provide details.
Trigger NaturalRemote Trigger Unknown
Avalanche Type Wet SlabAspect South Southwest
Elevation 1800ftSlope Angleunknown
Crown DepthunknownWidth 5000ft
Vertical Run 1000ft  
Avalanche Details

Multiple Large wet slab in Blackstone Bay and Passage Canal (Poe Bay). All slabs were 1500-1800’ and looked like they ran on a similar mid-pack layer (pi interface, 3/14?). Impressive connectivity/ sympathetic releases spanning a mile plus wide and multiple aspects. Likely these avalanche ran yesterday (5/11) during or just after the storm.
Most avalanches looked to be triggered by wet loose/ cornice dribble and then subsequent slabs released sympathetically.

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Obvious signs of instability
Recent Avalanches?Yes
Collapsing (Whumphing)?No
Cracking (Shooting cracks)?No
Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.

Mid 40’s high clouds and light rain this afternoon. No wind.

Photos & Video
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