Avalanche Forecast
Issued: Nov 26th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
jsmith,
Avalanche Canada
50-100 cm of recent snow and strong southwest winds have formed storm slabs that will likely be reactive to human triggers; especially in wind-affected terrain at treeline and above.
Continue to make conservative terrain choices while the storm snow settles and stabilizes.
Summary
Confidence
Avalanche Summary
Check out this MIN of a naturally triggered size 3 wind slab avalanche that was reported near Smithers on Friday.
Human triggered avalanches will remain likely at treeline and above on Sunday; especially on wind-loaded slopes.
Snowpack Summary
20-35 cm of new snow brings recent snow amounts to 50-100 cm at treeline and above. Strong southwest ridgetop winds have created thick wind slabs on lee aspects.
The recent snow overlies a variety of problematic snow surfaces including facets and crusts. The snowpack below the recent snow is generally shallow and weak.
The depth of the snowpack at treeline varies from 80-140 cm and tapers rapidly below treeline.
Many early-season hazards such as rocks, stumps, and open creeks exist below treeline.
Weather Summary
Saturday Night
Clearing skies / Isolated flurries; 0-5 cm / Strong northwest ridgetop winds / Low temperature at treeline -12 C / Freezing level valley bottom.
Sunday
Sunny / Light northwest ridgetop winds / High temperature at treeline -9 C / Freezing level valley bottom.
MondaySunny / Light southeast ridgetop winds / High temperature at treeline -13 C / Freezing level valley bottom.
TuesdaySunny / Light southeast ridgetop winds / High temperature at treeline -16 C / Freezing level valley bottom.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Continue to make conservative terrain choices while the storm snow settles and stabilizes.
- Seek out sheltered terrain where new snow hasn't been wind-affected.
- Shooting cracks, whumphs and recent avalanches are strong indicators of an unstable snowpack.
- Expect slab conditions to change drastically as you move into wind exposed terrain.
- Use small low consequence slopes to test the bond of the new snow.
Problems
Storm Slabs
50-100 cm of recent snow and strong southwest winds have formed storm slabs that will likely be reactive to human triggers; especially in wind-affected terrain at treeline and above.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Nov 27th, 2022 4:00PM
