Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Possible - Likely
- Tamaño
- 1–2
Last weeks winds came from the Northwest, West and Southwest. Many high elevation features could have wind slabs.
Boletín de aludes
Ver en el mapaJasper
Jan 13 – 14, 2025Avalanche Canada
Archivado · caducó 2 years ago
Peligro de aludes
Wed
Thu
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
Lo esencial
Identify wind impacted snow by watching for sudden changes in surface texture and hardness.
Problemas de aludes
Deep Persistent Slabs
NNEESESSWWNW- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Unlikely - Possible
- Tamaño
- 1–3
A variety of crusts with facets above and below exist at the bottom of the snowpack. These layers are going to be with us for a long time and pose a low probability, high consequence situation if triggered.
Confidence
High
Avalanche Summary
No patrol occurred Sunday. A couple low elevation size 1.5 loose avalanches were noted Saturday at highway level Coleman cliffs. Marmot basin explosive triggered a size 2 to ground on a North aspect on Friday. The slope was not previously controlled.
Snowpack Summary
5cm new snow at the icefields Friday night. Wind slabs formed before that from NW-W-SW winds. The snowpack is 60-120cm in depth at tree line. 10-30cm sits atop a weakening melt freeze crust and surface hoar layer from early December. The middle of the snowpack is facetted and there is a deep persistent layer at the base of the snowpack consisting of a decomposing melt freeze crust and depth hoar.
Weather Summary
Expect sun, cloud, no new snow, light winds, and -2 °C on Monday. A few flurries will come on Tuesday and Wednesday but nothing significant.
Terrain and Travel Advice
- Approach lee and cross-loaded slopes with caution.
- Be careful with wind-loaded pockets, especially near ridge crests and rollovers.