Avalanche Forecast
Issued: Feb 5th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Deep Persistent Slabs.
David McCashin,
Parks Canada
As you head out assume that ski terrain will be wind loaded and is untested.
Summary
Weather Forecast
Trace of snow through out the day on Thursday. Highs of -10C in the forecast area with moderate SW winds.
See Weather synopsis here: Avalanche Canada Mountain Weather Forecast
Snowpack Summary
Up to 50 cm of snow fell during last weeks storm in the forecast region. Previous mid-pack bridging over deeper instabilities is supporting the new load over the basal facets and depth hoar. This new load and bridging has still not been significantly field tested, treat the snowpack with caution.
Avalanche Summary
Poor visibility, treeline and above. Varied explosive results on the storm interface and on the persistent facet/depth hoar combos at the bottom of the snowpack. Obvious deep persistent release on Parkers Slabs produced size 2.5 - 3.0's; moving fast and leaving large impressive (~2m) crowns.
Confidence
Problems
Wind Slabs
New and developing wind slabs in the forecast region. Slab sensitivity will vary; with potentially wide variations over a small area. Assess each slope independently.
- If triggered the storm/wind slabs may step down to deeper layers resulting in large avalanches.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Wind loading and cornice development could trigger large avalanches
- If triggered the storm slabs may step down to deeper layers resulting in large avalanches.
Aspects: All aspects.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Valid until: Feb 6th, 2020 4:00PM
