http://www.pc.gc.ca/apps/links/goto_e.asp?destination=Heads Up! A Special Avalanche Warning is in effect as we do not think the danger rating of MODERATE adequately illustrates the complexity in the snowpack right now. This is a low probability, high consequence period with a highly variable snowpack.
Summary
Weather Forecast
Sunday will see light SW winds, a decent overnight freeze and freezing levels up to 1900m. Sunday night into Monday a NE flow is forecasting 15-20 cm in the Sunshine region with half that expected in Lake Louise.
Snowpack Summary
A thin melt/freeze crust exists on solar aspects, and on shady aspects up to 2000m where it disappears. Dry snow exists mainly on N aspects only. Shallow snowpack areas are weak, and we are concerned about facets in the lower snowpack overlain by a stiff slab which produces easy, sudden collapses in tests.
Avalanche Summary
Over the past week there have been large avalanches triggered by cornice failures, explosives and people on the deep persistent layer. Activity has tapered off in the last few days. Some loose wet avalanches noted on solar aspects over the last 24 hours to size 2 along Hwy 93 N. One slide observed pulled out a deeper slab in steep terrain.
Confidence
Forecast snowfall amounts are uncertain on Monday