Skier triggered slab avalanche

Soumis par: Dom Baker
Date d'observation: jeudi 20 avril 2023 à 18 h 00
Localisation: 49.434560° N 117.119910° W
Rapport concernant: Conditions de neige

Express

Avalanche

Manteau neigeux

Météo

Incident

Conditions de neige

La qualité du hors-piste était:

Excellente

Les conditions de neige étaient :

Lourde
Poudreuse

Nous avons parcouru:

Pentes alpines
Pentes convexes
Pentes de faible inclinaison
Pentes raides
Pentes ensoleillées

Information

La journée était:

Nuageuse
Chaude

Conditions d'avalanche

Avalanches de plaque datant d'aujourd'hui ou d'hier.

Commentaires

Sz 2.5 Skier triggered slab avalanche on the E aspect of Ymir peak, initiated from the approach to "the bench". We did not see it occur, but suspect this April 20 am based on talking with other skiers in the area. Wind deposited new snow failed on small facets on old sun crust. Crowns average 40-50cm, 10-30cm at trigger point. 60+ m wide in upper start zone, 100+ m wide below the rollover.

Sa sz 1.5 on NW aspect of Ymir, above Kubas chute entrance. Occured April 19, apparently no involvement. (Second photo)

Slab avalanche, crowns average 40-50cm, 10-30cm at trigger point. 60+ m wide in upper start zone, 100+ m wide below the rollover. New snow failed on small facets on old sun crust. E aspect

NW aspect sz 1.5 soft slab Sa, apparently no involvement.