Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Unlikely - Possible
- Taille
- 1–3
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.
Bulletin d’avalanche
Voir sur la carteJasper
Jan 4 – 5, 2017Parks Canada
Archivé · expiré 10 years ago
Danger d’avalanche
Wed
Thu
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
Points saillants
No significant changes expected leading into the weekend.
Problèmes avalancheux
Persistent Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Unlikely
- Taille
- 1–3
It is less clear where this layer remains. Shallow areas are weakening and breaking down this layer by faceting with cold temps. Be diligent in your snowpack investigation.
Loose Dry
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible
- Taille
- 1–2
Arctic temperatures faceting the surface snow causing it to loose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.
Weather Forecast
Extremely cold overnight temps through the forecast area Tuesday night. Warming by mid-day to a reasonable -12. Broken skies and light winds. Some light flurries forecasted for Wednesday afternoon.
Snowpack Summary
Surface snow, alpine pockets and loaded lee features are facetting with the arctic temps and rapidly losing cohesion. Southerly slopes in the alpine have been stripped by previous SW winds and hard slab on lee features. At treeline, the snow is faceted that is barely supportive and weak in shallow areas.
Avalanche Summary
Road Patrol in the Maligne Valley. Loose dry slides up to sz 1.5 out of steep rocky terrain. Slabs up to size 2.5 noted on Mt. Cirrus above and close to the Polar Circus ice climb.
Confidence
The weather pattern is stable