Avalanche Forecast

A pulse of precipitation is expected tonight with 5 to10cm and moderate winds from the west, temperatures will remain below freezing with lows in the -20's. No significant low pressure systems are expected this week, but expect small convective pulses to bring in some snow.

40-50cm of storm snow has developed into a touchy storm slab that is sensitive to triggers at treeline and above. This sits over a supportive mid-pack, with the lower half of the snowpack consisting of weak facets and depth hoar. There is isolated wind effect near ridge crests only; the notable observation is the lack of wind effect.

Avalanche control on Mt Whymper and Mt Simpson today. On Whymper results were similar to previous control this week, touchy storm slabs producing avalanches to size 3 as well as remote avalanches on adjacent slopes. Further south at Mt Simpson results were less dramatic, mostly smaller soft slab releases with one size 2.5 from a cornice release.