Avalanche Forecast
Issued: Apr 6th, 2014 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Deep Persistent Slabs and Wind Slabs.
aaron beardmore,
Avalanche Canada
Rising freezing levels should be expected over the next day or two. Keep in mind that rapidly warming conditions are detrimental to the snowpack and increase avalanche risk.
Summary
Weather Forecast
Rising freezing levels over the next two days (possibly to 2300m) will hold the danger rating at considerable. On Tuesday night the forecast could see up to 25cm of snow with warm temperatures and strong wind. This will elevate the danger rating to high on Wednesday.
Snowpack Summary
New wind slabs 15-25 cm thick in the immediate lees. Western areas such as Emerald and Field have a deep and stable snowpack. Contrast this with the Lake Louise, Hwy 93 N, & Sunshine areas, where there is a weaker snowpack with sudden collapse very easy compression results on the basal depth hoar. A crust exists on all but N aspects.
Avalanche Summary
No avalanches were observed or reported today.
Confidence
Problems
Deep Persistent Slabs
Thin areas mainly E of the divide are still susceptible to triggering basal layers causing larger avalanches. Big triggers such as cornice failures could be enough load to trigger an avalanche on the ground level.
- Avoid shallow snowpack areas where triggering is more likely.
- Use conservative route selection, choose moderate angled and supported terrain with low consequence.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Isolated wind slabs in the lees of alpine ridge crests will still be susceptible to human triggering in the short term.
- Use caution in lee areas. Recent wind loading have created wind slabs.
Aspects: North, North East, East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 7th, 2014 4:00PM
