Observation: Summit

Location: Fresno Ridge

Route & General Observations

Toured from MP48 up standard Fresno Ridge skin track. Continued on through the rolling hills section to treeline and dug a pit at 2,800′. Skied back direct to highway.

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

After reaching the broken treed / meadow sections at approx. 2,200', stomped on some small features with obvious wind loading. Observed fractures approx. 10cm deep that were stubborn to trigger, and broke only directly under our skis. These fractures did not shoot ahead or behind us.

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

Sky: Overcast
Temp: -2C to 0C throughout the day
Wind: Light from the N
Precip: None for most the day, beginning to snow very light as we skied out.

Snow surface

Approx. 5cm of new snow over large buried surface hoar.
Ski pen. = 12cm
Boot pen. = to ground


See pit photo and profile (photos 1 and 2)
We observed the several layers of buried surface hoar described in previous obs, including the large buried surface hoar near the top of the snowpack immediately below the newest snow (photo 3).
Our tests did not result in failures at these buried surface hoar layers, but rather in the basal facets at the bottom of the snowpack.
CT12 @ 13cm, Q2
ECTP29 @ 13cm
PST 45/100 @ 15cm on bottom layer of facets.

Photos & Video
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