Jasper

Terrain is both the problem and the solution to this facetted, deep persistent problem. Manage your exposure and keep wary to evidence of localized instability; like cracking, whumphing and, recent nearby avalanche activity.

A cool NE flow of dry arctic air over the day Monday and into the week. No significant changes to the current weather expected. Monday: Sunny with cloudy periods. No precipitation. High -11 C. Light ridge wind west. Tuesday: Cloudy with sunny periods and isolated flurries.A detailed mountain weather forecast is available from Avalanche Canada.

Cold temps have faceted the upper snowpack leaving a weak slab over a faint instability down 40cm (surface hoar/facets on a crust). Look for areas where a strong mid-pack will support a rider over the deep persistent weakness. A shallower mid-pack will act as a slab if triggered, sliding on facets and depth hoar in the lower third of the snowpack.

Field team in Whistler Creek Saturday reporting good ski conditions and no new avalanches in the region. Numerous dry loose to sz 1; characteristically from steeper, planar terrain; widespread across the forecast region.