Hudson Bay - AST 1 Course obs

Carte pour le rapport du Réseau d'information en montagne: Hudson Bay - AST 1 Course obs

Conditions de neige

La qualité du hors-piste était:
OK
Les conditions de neige étaient :
  • Poudreuse
  • Affectée par le vent
Nous avons parcouru:
  • Pentes alpines
  • Pentes de faible inclinaison
  • Forêt dégagée
Nous sommes restés à l'écart de:
  • Pentes convexes

Information

La journée était:
  • Nuageuse
  • Venteuse
Conditions d'avalanche
  • 30 cm + de neige fraîche ou transport important de neige par le vent ou pluie au cours des dernières 48 heures
  • Whoumfs ou bruits sourds ou fissures qui se propagent.

Commentaires

We toured west of the skihill for an AST 1 fieldtrip today. The day started with very light winds, which ramped up to moderate-strong from the west towards days end with significant transport observed into Alpine lee features. There was 5cm of new snow from the last 24hrs, and temperatures hovered around -3c. In sheltered terrain, the recent new snow from the weekend has settled with the warmer temperatures since the weekends storm. With increased slab properties, we found a weakness where the new snow sits on the colder, sugary faceted snow from the cold snap. This produced a failure in an Extended Column Test down 35cm. We also saw cracking in recent windslabs. We observed a recent fracture line on a steep, windloaded ,east facing alpine terrain, that in poor light appeared to be a size 1.5-2. Otherwise, the majority of open Alpine terrain is heavily wind affected.