Observation: Summit

Location: North Gilpatrick

Route & General Observations

Toured up to brushline on E-SE face of North Gilpatrick. Observed active wind loading in the new snow and sensitive soft wind slabs forming and reacting.

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)?Yes
Observer Comments

Observed wind loading in progress above approx. 2,500’. Poked around on some isolated steep rollovers and got several shooting cracks and small wind slabs to pop loose. These were fresh, soft, and very sensitive, breaking out 15-20’ in front of our skis. As of midday these were still thin, a couple of inches thick. Around specific micro-terrain features, closer to 6” thick. Still plenty of new snow to blow around up there.

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

Temp: -2C
Sky: Obscured trending toward overcast later in the day
Wind: Moderate gusting to strong above treeline from the West
Precip: None

Snow surface

New snow. Wet at the highway, transitioning to dry above 2,000’. Above 2,500’ wind effects became noticeable. These effects seemed to be highly variable depending on small terrain features.


Performed some quick tests on a small 45 degree rollover at 2,750’, E-SE aspect.
HS180cm (snow depth was highly variable in the area depending on micro-terrain features)
CT2 @15cm down, Q1, and then on the same column;
CT11 @25cm down, Q1
Immediately adjacent to first column;
CT3 @25cm down, Q1. This split on the interface @15cm deep while sliding off the column.

Photos & Video
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