Observation: Summit

Location: Manitoba

Route & General Observations

Skinned typical uptrack to just below the hemlock grove island before the push to the ridge ~2800″

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 we pushed pasted the last of the hemlock forest around 2500' we experianced numerous isolated whumphing and collapsing underfoot propagating 10' from skis.

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

Clear skies, few clouds in the afternoon. Light winds out of the SE. Temps at 9am were -5C rising to -3 around 1pm. Light snow transport

Snow surface

Surface Hoar (5mm) at 2300' on SW aspects all the way to our pit sit at 2700'.


Overall snowpack (HS) 46cm at 2700' on a W aspect 21 degree slope. Deeper in gullies.
46cm-21cm: Fist
21cm-8cm: 4 Finger
8cm-0cm Fist
Pit results all failed on the the lower fist layer which was composed of a 2mm depth hoar layer (CT22 Sudden Collapse, ECTP12 Sudden Collapse)