Avalanche Forecast
Issued: Dec 27th, 2020 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Deep Persistent Slabs.
JMackenzie,
Avalanche Canada
Despite the drop in danger levels, cautious terrain selection is still in order. Wind slabs are highly variable, and could surprise a rider in steep terrain or lee loaded gully.
Summary
Confidence
High -
Weather Forecast
 Monday will be a mix of sun and cloud with light to moderate SW winds at ridgetop. A cool morning will warm to near -7 by early afternoon. Most forecasts indicate that there is no new snow expected, but at least one model indicates occasional light flurries through the day.
Avalanche Summary
Nothing new observed today.
Snowpack Summary
2 to 3cm of new snow overnight, adds to the 5cm that fell yesterday. Alpine areas are significantly affected by wind, with widespread wind slabs present. These are now somewhat disguised by the recent snow. The depth and character of these slabs is highly variable. Dig down and evaluate the recent interface before entering a line. The November crust layer has been active in a few recent avalanches which indicates it's potential if overloaded. This layer is also highly variable in character, and will be on our minds for some time to come.
Terrain and Travel
- Avoid areas where the snow feels stiff and/or slabby.
- Avoid convexities, steep unsupported terrain and rocky outcroppings.
- Avoid lee and cross-loaded terrain.
- Be especially cautious as you transition into wind affected terrain.
- Seek out wind sheltered terrain below treeline where you can avoid wind slabs and find great riding.
Problems
Wind Slabs
Wind slabs (now buried by up to 10cm of recent snow) are widespread. In steep and unsupported terrain, they could be sensitive to human triggering.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Recent avalanches have stepped down to this layer triggerring large avalanches.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 28th, 2020 3:00PM
