Quartz Creek

Date/heure de l'avalanche

samedi 22 janvier 2022 à 13 h 00

Nombre d'avalanches dans ce rapport

1

Taille de l’avalanche

2

Épaisseur de la plaque

50cm

Largeur de la plaque

100m

Longueur d'écoulement de l'avalanche

100m

Caractère de l'avalanche

• Plaque à vent

Type d'élément déclencheur

Motoneige

Sous-type d'élément déclencheur

Accidentel

Versant de la zone de départ

• N

Bande d'altitude de la zone de départ

• Alpin

Altitude de la zone de départ

2 300m

Exposition au vent

Pente sous le vent

Couverture forestière

Pente dégagée

While on an AST 1 field day we witnessed Sledders riding this wind loaded slope. When we looked again a minute later it had slid. We could not tell if anyone was caught but later heard there was a burial but the rider was ok.

We also noticed on the trail ride in that a rider had cut across a bank and it fractured on what appeared to be the dec persistent layer. This was lower down at about 1500m.

The weather was sunny and warm but did not get as warm as some weather models predicted. A cool wind kept it below zero on the south aspects. No pinwheels.