Avalanche: Chugach State Park

Location: Three bowl, Hiland valley

Route & General Observations

Soft surface conditions. Occasional wind effect, especially near ridges. Expected spatial variability for the region, but in general snow pack was right side up

Avalanche Details
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Trigger SnowboarderRemote Trigger Yes
Avalanche Type Hard SlabAspect South Southwest
Elevation 4300ftSlope Angle 40deg
Crown Depth 20inWidth 50ft
Vertical Run 1000ft  
Avalanche Details

As we were topping out on the ridge we noticed a supportable wind slab followed shortly by a collapse and shooting cracks. We then looked to our side and saw we had sympathetically triggered a hard slab 100 feet away in steeper terrain. This ran about 800-1000 feet. Looked to have failed between new snow/new wind slab and old surface facets. Prior to this we had no red flags

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