Avalanche Forecast
Issued: Jan 14th, 2021 8:05AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
Percy Woods,
The storm is over and the sun is out. Use a cautious approach to moving into avalanche terrain today. Keep in mind where surface hoar may linger under the slab.
Summary
Weather Forecast
Cloudy with sunny periods and no precipitation.
Alpine temperature: High -7 C along with ridge wind southwest: 15 km/h gusting to 40 km/h.
Freezing level around 800 metres.
Friday brings a return to flurries with accumulation around 6 cm.
Alpine temperature: High -6 C with ridge wind west: 25-40 km/h and a freezing level of 1200 meters
Snowpack Summary
A 40cm+ fresh storm slab covers a thin crust from sun and/or rime in exposed terrain. Sheltered terrain at and below treeline harbours surface hoar up to 10mm under the slab. The spotty Dec 26 surface hoar is down 70-90cm. The Dec 7th surface hoar/suncrust/facet layer is down 1.5m+. Crusts with facets persist at the base of the snowpack.
Avalanche Summary
Yesterday's wild storm brought a pronounced natural avalanche cycle with slides to size 4 just west of the park and off Mt MacDonald. Avalanche control was very successful with numerous size 3 avalanches.
Confidence
Problems
Storm Slabs
Wind, warmth and heavy snowfall have formed widespread storm slab. Human triggering should be front of mind today even with cooler temps.
- Watch for whumpfing, hollow sounds, and shooting cracks.
- The new snow will require several days to settle and stabilize.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 15th, 2021 8:00AM
