Avalanche Forecast
Issued: Dec 11th, 2019 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
kdevine,
Avalanche Canada
Ongoing heavy snowfall and strong winds will mean that avalanches are likely today at upper elevations.
Summary
Confidence
Weather Forecast
WEDNESDAY NIGHT - Snow mixed with rain, heavy at times, 25-35 cm / southwest winds, 40-60 km/h / alpine low temperature near 0 / freezing level 800 m
THURSDAY - Snow, 15-20 cm / west winds 40-60 km/h / alpine high temperature near +1 / freezing level 1200 m
FRIDAY - mainly cloudy with scattered flurries, 5 cm / southwest winds, 10-20 km/h / alpine high temperature near 0 / freezing level 1000 m
SATURDAY - Cloudy with sunny periods / light southwest winds / alpine high temperature near -1 / freezing level 800 m
Avalanche Summary
Strong winds and potentially up to 50 cm of new snow by the end of the day on Thursday will mean that storm slabs will be forming at upper elevations, and will probably become more reactive throughout the day. Pay attention to treeline areas as well, as there may be enough snow for avalanches now.
Snowpack Summary
25-35 cm of new snow from Wednesday night likely sits on weak surface hoar crystals in many locations. With another 15-20 cm forecast to fall throughout the day, total new snow amounts could reach 40-55 cm by the end of the day on Thursday. The rain/snow line is expected to be between 600-800 m. Strong southwest winds are expected to redistribute the new snow and form reactive storm slabs. The new snow sits on a very thin snowpack of about 30 cm at 1500 m in the North Shore mountains.
Problems
Storm Slabs
Heavy snow and strong winds are expected to continue throughout the day on Thursday. Avalanches will be likely in areas where a snowpack existed prior to this storm.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 12th, 2019 5:00PM
