Bow Summit snowpack

Soumis par: Parks Canada Visitor Safety
Date d'observation: mardi 13 décembre 2022 à 21 h 00
Localisation: 51.707100° N 116.503810° W
Rapport concernant: Conditions de neige

Express

Avalanche

Manteau neigeux

Météo

Incident

Conditions de neige

La qualité du hors-piste était:

Nous avons parcouru:

Pentes de faible inclinaison

Commentaires

80 cm deep, weak snowpack at Bow Summit treeline. Buried crust and surface hoar in the middle of the snowpack with facets and depth hoar below. CT 11 taps fails Sudden Collapse just below the crust, then the depth hoar below crumbles away while trying to do tests.

Skiing was nice on the surface with 10 cm soft pow, but felt very tentative with all of the rocks around. Very careful skiing.

80 cm snowpack at treeline. Foot penetration is almost to the ground because the snowpack is so weak.

Notice the cluster of weak grains from 52-50. Crust, facets and surface hoar. These are the Nov 25 layer (crust) and Nov 16 (SH/FC) but they are close enough together that the whole thing is one nasty, weak complex. Any avalanche that starts on this layer will step down to the depth hoar below and slide on the ground.