The Oct crust is the layer of greatest concern on large alpine slopes. If winds pick up more than forecast, watch for wind slab formation locally.
Ski quality has improved up high where there is a consistent snowpack, but it is still pretty rugged at treeline and below.
The crust/facet layer from October 23, located just above the ground, is capped by a 50-80 cm slab. This layer has caused avalanches over the past week. The extent of the problem remains uncertain, but we advise exercising extra caution on steep, open alpine features.
No new avalanches were observed or reported today. Yesterday, however, some deep slabs with explosives were reported at Sunshine and Lake Louise ski hills, and a natural size two was seen on Scarab Peak in the Sunshine backcountry.
10-20 cm of recent storm snow lies on an early-season snowpack measuring 50-90 cm at treeline. Two weak layers are present: the November 9 crust, found 25-40 cm above the ground, and an October crust near the ground, where facets and depth hoar are developing. Observations of the October layer are limited, but it appears most prominent on northerly aspects at treeline and above.
Low of -15C and highs of -5C Thursday. Light to moderate alpine winds and no snow. See image below for tables.
