Avalanche: Girdwood

Location: Notch Mountain

Route & General Observations

Toured up Notch, saw another group that was staying at the hut and watched a few members of that party remote trigger a slide on their way down from low angle terrain. We dug a snowpit and spent the rest of the day lapping safe low angle terrain.

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 SkierRemote Trigger Yes
Avalanche Type Soft SlabAspect South Southwest
Elevation 2200ftSlope Angle 45deg
Crown Depth3ftWidthunknown
Vertical Rununknown  
Avalanche Details

Two other skiers in another party remote triggered a soft slab in front of us while they were skiing down, they didn't see it or notice a whumph but we watched the slide rip out about 30 yards from where they were skiing; we spoke with them afterward. We only saw the very top of the slab and weren't able to safely see how wide it propagated or how long it ran.

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.

Lightly rain until about 1000ft then light snow

Snow surface

variable ice and raincrust until roughly 1500ft, wet powder that became drier the more we climbed, slight wind effect on ridgeline


ECTP 15 on what appeared to be the thanksgiving crust/facet layer. It failed about 80-90 cm down (2.5-3') on a layer of facets above a thin crust that I believe is the thanksgiving layer.