Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible - Likely
- Taille
- 1–1.5
Strong wind from the southwest will blow new snow into slabs that will be possible to trigger near ridgetops.
Bulletin d’avalanche
Voir sur la carteKootenay Boundary
Dec 3 – 4, 2019Avalanche Canada
Archivé · expiré 7 years ago
Danger d’avalanche
Thu
Fri
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
Points saillants
Stormy weather will create the potential for slab avalanches in wind affected terrain.
Problèmes avalancheux
Confidence
Moderate - Uncertainty is due to the timing, track, & intensity of the incoming weather system.
Weather Forecast
MONDAY NIGHT: Flurries bring 5-10 cm of snow, 40-70 km/h wind from the southwest, alpine temperatures around -5 C.
TUESDAY: Morning flurries with another 5-10 cm of snow then cloudy in the afternoon, 40-70 km/h wind from the west, alpine high temperatures around -3 C.
WEDNESDAY: 10-20 cm of snow, 40-50 km/h wind from the southwest, alpine high temperatures around -2 C.
THURSDAY: Mostly cloudy, 20-40 km/h wind from the southwest, alpine high temperatures around -4 C.
Avalanche Summary
Over the next few days new snow and wind will form fresh slabs that will be most reactive in wind affected terrain. There have been no recent reports of avalanches, but observations are limited this time of year.
Snowpack Summary
By Tuesday afternoon there will be 10 to 20 cm of new snow, with strong wind forming deeper deposits at higher elevations. The new snow is falling on hard surfaces including wind pressed snow and rain crusts. Snowpack depths are about 100 cm at treeline elevations and taper quickly below treeline. The lower snowpack contains several 'sandwiched' layers of facets and crusts as well as a potential surface hoar layer (see video here). These type of layers can potentially develop into avalanche problems, but are most likely unreactive at the moment.