Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible - Likely
- Taille
- 1–2
A wind event on Wednesday has created wind slabs in the alpine and down into tree line.
Bulletin d’avalanche
Voir sur la carteJasper
Dec 15 – 16, 2023Avalanche Canada
Archivé · expiré 3 years ago
Danger d’avalanche
Sun
Mon
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Points saillants
The wind is forecast to increase through Friday. Watch for new wind-slabs and spin drift avalanches if ice climbing or skiing.
Problèmes avalancheux
Deep Persistent Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible
- Taille
- 1–2.5
The snow pack is very weak at the bottom. Natural activity has not been observed yet. Keep this on your radar as triggering remains possible with the shallow nature of the overall snowpack.
Confidence
High
Avalanche Summary
A few small wind slabs reported at ridge top at Marmot Basin over the past couple of days. Widespread spin drifts were noted off steep rocky terrain due to the strong winds on Wednesday.
Snowpack Summary
Trace amounts of snow fell on Thursday. The snowpack is 40-60cm deep and is weak and facetted. A surface hoar layer is down 15-20cm below 2300m. Previous strong winds have stripped exposed alpine and tree-line terrain and created wind-slabs in cross-loaded and lee features.
Weather Summary
The Mountain Weather Forecast is available at Avalanche Canada https://avalanche.ca/weather/forecast
Friday
Mainly cloudy with isolated flurries.
Precipitation: Trace.
Alpine temperature: High -6 °C.
Ridge wind southwest: 20 km/h.
Saturday
Mainly cloudy with isolated flurries.
Precipitation: Trace.
Alpine temperature: Low -7 °C, High -5 °C.
Ridge wind west: 20-30 km/h.
Freezing level: 1500m
Terrain and Travel Advice
- Avoid areas where the snow feels stiff and/or slabby.
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.