Avalanche Forecast
Issued: Nov 14th, 2017 8:01AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
ross campbell,
Parks Canada
Heads up as most groups are recreating in one drainage, watch for groups above and below you! Early season hazards are lurking below the snow surface, ski / ride cautiously.
Summary
Weather Forecast
Cloudy with sunny periods today and a dusting of new snow. Alpine high of -6 with a rising freezing level to 1400m. Winds will be moderate today gusting to strong from the south. Tomorrow we're expecting 15-20cm with increasing winds and mild temps.
Snowpack Summary
10cm overnight, 35cm now covering the Nov 9 interface, 30-40cm over the Halloween crust at tree line. The crust sits on 30-50cm of rounded grains and mixed forms which seems to be bonding well for the time being. No significant instabilities in the snowpack currently, except for a slowly building storm slab on the surface.
Avalanche Summary
Eleven slab avalanches were recorded yesterday in the Highway corridor, up to size 2.5. These slides started in very steep terrain, mostly dry and made it to the run out zone.
Confidence
Due to the number and quality of field observations
Problems
Storm Slabs
35cm of storm snow now covers the Nov 9 interface. Warming temps and increasing south winds will promote the formation of a storm slab. Keep a keen eye out for changing conditions over the day.
Use caution in alpine and open treeline lees. Recent snowfall has created storm slabs.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 15th, 2017 8:00AM
