Avalanche Forecast
Issued: Dec 1st, 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
The Northwest Coast is about to get slammed by a significant storm. Heavy snow and very high winds are expected on Monday. Expect Avalanche Danger to increase throughout the day.
Summary
Confidence
Moderate - We are confident the likelihood of avalanche will increase with the arrival of the forecast weather.
Weather Forecast
SUNDAY NIGHT - Snow 10-15 cm / southwest winds, 40-70 km/h / alpine low temperature near -5
MONDAY - Snow, 15-25 cm / southwest winds, 60-100 km/h / alpine high temperature near -1 / freezing level 800 m
TUESDAY - Flurries, 5-10 cm / southwest winds, 30-50 km/h / alpine high temperature near -2
WEDNESDAY - Cloudy with sunny periods and isolated flurries / light north west winds / alpine high temperature near -6
Avalanche Summary
Avalanche activity is expected to be widespread on Monday. Avalanche hazard will increase throughout the day with heavy snow and strong winds in the forecast.
Snowpack Summary
10-15 cm of new snow from Sunday night is likely sitting on a mix of hard wind slabs, sugary faceted snow, and feathery surface hoar crystals. With heavy snow continuing throughout the day, there could be as much as 30-40 cm of new snow by the end of the day on Monday. Rain can be expected below about 800 m elevation. With up to 100 km/h winds in the forecast, the new snow will be redistributed into slabs that will likely be very reactive. Â
Total snowpack amounts by the end of Monday may be in the 60-120 cm range, tapering quickly at lower elevations.
Problems
Storm Slabs
A combo of heavy precipitation and up to 100 km/h winds suggest a serious storm slab problem will be developing on Monday.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 2nd, 2019 5:00PM
