Observation: Summit

Location: Manitoba

Route & General Observations

Toured up the standard route on 1-23 and again on 1-24.

Jan 23: 6″ mod density new snow on surface 1/24 with light winds and no snow transport under partly cloudy skies. Temps in the high low 30s to high 20s above 2000 ft. no recent avalanches or signs of instability observed.

Jan 24: moderate winds overnight and during the day with snow transport. Previous day’s tracks completely filled and soft wind slabs at higher elevations.

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Observer Comments

None observed, although 3-5" soft wind slabs forming on SW aspects above 2300 ft.

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

Partly cloudy. Temps in the low 30s at road elevation, to high 20s at 3000 ft. Winds 10-20 mph from E-SE with snow transport above 2300. Trace of precipitation.

Snow surface

Settled powder on Jan 23 transformed overnight to soft 3-5" wind slabs above 2300' Actively loading on W-SW aspects above 2300'.


Dug snowpit at 2200 near common approach track on a 23 degree slope. HS=145cm with 6" new snow at surface, with two prominent 1" melt-freeze crusts and an associated weak layer beneath, one crust at 120cm with a thin layer of F hard facets beneathe, and another crust at 80 cm with facets and buried surface hoar beneath (not intact/upright, but visible). Snowpack exhibited poor structure, but had high strength and low propagation potential with 2 ECT tests (ECTN 18). Planar shear upon levering column on the 80 cm crust/surface hoar

Photos & Video
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