Avalanche: Chugach State Park

Location: Anchorage Front Range

Route & General Observations

Short tour on the southern end of Anchorage front range with an assessment mindset. Scaled back any ideas of getting into avy terrain today after several LARGE whumpfs.

Avalanche Details
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Trigger NaturalRemote Trigger Unknown
Avalanche Type Hard SlabAspect Southwest
Elevation 1800ftSlope Angleunknown
Crown Depth 24inWidth 50ft
Vertical Run 50ft  
Avalanche Details

Natural avalanche looks like it occurred on Monday or Tuesday during this last warm up/ storm. Small, wind loaded terrain feature that produced the avalanche. Given small terrain feature this did not run far but was as deep of a fracture as I’ve ever seen in this spot.

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)?Yes
Cracking (Shooting cracks)?No
Observer Comments

Very large whumpfs and lots of them!

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

17F at the parking lot. Winds were light (less than 5mph). Snow was picking up around 4p to S -1.

Snow surface

4-6” low density fluff on top of a semi supportable wind crust.


Dug a pit after one exceptionally large whumpf at 1800’. This was adjacent to natural ax.
HS: 110cm
NW aspect.
23 degree slope
ECTP11, 12 on facets above stout m/f crust (Halloween storm?).

Buried surface hoar layer down 30cm was easy to see/ produce a plane. Ect’s we’re breaking deeper in the pack on the bottom of a thick (20cm) layer of facets, ~80cm down.

Photos & Video
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