Avalanche Forecast
Issued: Jan 31st, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
kdevine,
Avalanche Canada
Fresh storm slabs are expected to be widespread and reactive, and they may be larger than expected due to the presence of a buried weak layer. Choose simple terrain and avoid overhead hazard.
Summary
Confidence
Moderate - Forecast snowfall amounts are uncertain.
Weather Forecast
SUNDAY NIGHT - Flurries, 5-10 cm / moderate to strong southwest wind / alpine low temperature near -4Â
MONDAY - Flurries, 5-10 cm with another 10-15 cm overnight / moderate to strong southwest wind / alpine high temperature near -2Â
TUESDAY - Flurries, 5-10 cm / moderate to strong southwest wind / alpine high temperature near -4Â
WEDNESDAY - A mix of sun and cloud / light northwest wind / alpine high temperature near -6
Avalanche Summary
Reactive storm slabs are expected to be widespread on Monday, and human triggered avalanches remain likely.
At the time of publishing, there were several reports of size 1-1.5 natural and human triggered avalanches in the region on Sunday.
Snowpack Summary
10-20 cm of new snow is expected to accumulate between Sunday night and Monday afternoon. This will bring total recent fresh snow amounts to 25-50 cm, which sits on firm wind affected snow at upper elevations, on surface hoar in some sheltered areas, on a melt-freeze crust below 1600 m, and on a sun crust on south-facing slopes.
In the south, the underlying snowpack is well consolidated. In the north, a melt-freeze crust from early December may be found 100 to 200 cm deep. Recent reports suggest that this layer is gaining strength and it has been unreactive in recent weeks.
Terrain and Travel
- Conditions are expected to deteriorate throughout the day.
- Dial back your terrain choices if you are seeing more than 20 cm of new snow.
- Minimize exposure during periods of heavy loading from new snow and wind.
Problems
Storm Slabs
Fresh and reactive storm slabs are expected to be widespread and easy to trigger, especially in wind loaded areas.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Feb 1st, 2021 4:00PM
