Avalanche Forecast
Issued: Nov 30th, 2019 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
kdevine,
Avalanche Canada
Caution as you transition into wind exposed terrain. Wind slabs may be encountered at upper elevations and could be reactive to human triggering.
Summary
Confidence
Low - Uncertainty is due to the limited number of field observations.
Weather Forecast
SATURDAY NIGHT - Mainly clear / light west winds / alpine low temperature near -12
SUNDAY - Cloudy with sunny periods and isolated flurries / northwest winds, 20-50 km/h / alpine high temperature near -6
MONDAY - Mainly cloudy with isolated flurries / southwest winds, 30-60 km/h / alpine high temperature near -7
TUESDAY - Mainly cloudy with isolated flurries / southwest winds, 30-50 km/h / alpine high temperature near -6
Avalanche Summary
Wednesday's storm likely produced some dry loose avalanches in northern parts of the region (as has been observed in Kananaskis Country), while the southern parts of the region likely experienced a more widespread cycle of storm slab avalanches. Looking ahead, slopes that have been loaded by the wind are the most likely spots for human triggering across the region. There is more uncertainty about how quickly the storm snow has gained strength south of Crowsnest Pass. People travelling in that part of the region should approach avalanche terrain with greater caution.
Snowpack Summary
An intense winter storm brought variable amounts of snow to the region on Wednesday. Areas south of Crowsnest Pass received 30-60 cm of snow, areas north of Crowsnest Pass received 10-30 cm of snow, and the Elk Valley and other parts of BC received 0-10 cm of snow. The new snow is heavily wind affected; expect to find wind slabs in open terrain. The most dangerous wind slabs and storm slabs will be in southern parts of the region that received more than 30 cm of snow. The new snow has fallen on a highly variable early season snowpack. Some terrain already had 50-100 cm of snow while other terrain had no snow prior to this storm. In areas that had prior snow, there could be a crust in the snowpack that could develop into a sliding layer for the snow above it.
Problems
Wind Slabs
Wind slab avalanches are the main concern in most parts of the region. Areas south of Crowsnest pass likely have a more widespread wind slab problem as they received 30-60 cm of new snow on Wednesday.
Aspects: North, North East, East, South East, West, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Dec 1st, 2019 5:00PM
