Observation: Portage / Placer

Location: Skookum Glacier

Route & General Observations

Seward Highway up Skookum Valley/ Glacier to high point of 5K.

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
Observer Comments

Large connected avalanches in extreme terrain, WSW aspect above Skookum Valley. Older (small) slabs present lower in Skookum Valley, maybe a week or more old.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.

Sunny. Calm winds. Zero to 10F degrees. No new precip.

Snow surface

20-30cm low density at 2500' Pockets of 50-70cm new snow over supportable slab. Surface appeared to be mostly new precip particles w some surface hoar (laid down). Surface was all low density, soft snow from sea level to 5,000'.
Storm snow from earlier in the week appears to have settled ~6".


Dug a couple quick pits at ~2700' on a north aspect and a west aspect to look for bed surface/ facet/ slab combo. Could not find facets in our quick pits.
20-30cm fist hard snow over 1F/ P hard slab down ~2m. No obvious layers of concern.

Terrain progression had us ramping up slope angles throughout the day and we had opportunity to test many small test slopes with snowmachines. No cracking, collapsing or recent avalanches today.

Photos & Video
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