Snowfall amounts over the coming days vary between the north and south portions of the region. Light to moderate amounts of snow accompanied by wind gradually raise danger ratings.
Problemas de aludes
Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alta montaña
Límite del bosque
Bajo el límite del bosque
Probabilidad
Possible
Tamaño
1–2
Wind slabs may remain reactive at higher elevations with the wind switching from predominantly southwest to southeast
Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alta montaña
Límite del bosque
Bajo el límite del bosque
Probabilidad
Unlikely - Possible
Tamaño
2–4
Heavy triggers such as a cornice fall or a small avalanche could potentially step down to weak layers buried about 1 m deep in the northern parts of the region.
Confidence
Moderate - Forecast snowfall amounts are uncertain on Wednesday
Weather Forecast
WEDNESDAY: Flurries, accumulation 10-15cm / Moderate south wind / Alpine temperature 0 / Freezing level 1400mTHURSDAY: Flurries, accumulation 5-10cm / Moderate to strong south wind / Alpine temperature -1 / Freezing level 1300mFRIDAY: Snow, accumulation 15-30cm / Moderate south wind / Alpine temperature -1 / Freezing level 1200m
Avalanche Summary
There is no recent avalanche activity to report. On Wednesday, wind slabs may remain reactive in human triggers at upper elevations. In northern parts of the region, the deeper February weak layers continue to present a low probability / high consequence scenario.
Snowpack Summary
Expect another 10-15cm of snow at upper elevations to add to the storm snow amounts from last weekend which totalled roughly 40 cm around Coquihalla and Allison Pass and 30 cm around Duffey Lakes. Freezing levels reached roughly 1400 m at that time, resulting in rain and/or wet snow at lower elevations. Thicker wind slabs and large cornices likely exist in alpine terrain. The storm snow sits above a widespread rain crust up to about 2100 m, but the snow has likely formed a good bond to this crust. In the north of the region, the February weak layers are 80-120 cm deep and include a buried surface hoar layer that recently produced a few persistent slab avalanches and a crust/facet layer that appears to be gaining strength. In the southern parts of the region, the lower snowpack is generally stable.