Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible - Likely
- Taille
- 2
Likely areas to encounter this problem exist in open areas of terrain above treeline in the lee of the wind.
Bulletin d’avalanche
Voir sur la carteBanff Yoho Kootenay
Dec 1 – 2, 2014Parks Canada
Archivé · expiré 12 years ago
Danger d’avalanche
Mon
Tue
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
Points saillants
The snowpack is in an immature state at the moment. Field technicians today observed consistent whumphing while traveling on skis below treeline suggesting the snowpack is ripe for failure. Remain cautious when evaluating and selecting your terrain.
Problèmes avalancheux
Deep Persistent Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Likely
- Taille
- 2–3
The primary problem in the snowpack is the interface between the recent storm snow and the November 6th and 24th facet/crust interfaces. This problem is the culprit for the vast majority of the avalanches in the past week. Watch for remote triggers.
Weather Forecast
A strong high pressure system will remain in place for the next 48 hours creating arctic outflow conditions and very cold temps. Temperature should moderate by mid week.
Snowpack Summary
Recent storm snow has settled into a soft slab but the snowpack character at the moment is unconsolidated and lacking any structure. Field forecasters were penetrating through the entire snowpack with skis close to the ground. Observed is the prominent Nov 6th crust which lies 10-20 cm's above the ground and snowpack tests yielded sudden collapses.
Avalanche Summary
The eastern rockies have seen the first major avalanche cycle this winter. Numerous avalanches up to size 3 were observed in the Alpine and Treeline on all aspects and many failures took place during the peak of the storm.
Confidence
Due to the number of field observations on Sunday