Avalanche Forecast
Issued: Mar 14th, 2020 8:13AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
jonas hoke,
Parks Canada
Fresh windslabs from strong outflow winds will be possible for skiers and boarders to trigger today.
The windchill is real in any exposed areas, dress/pack accordingly.
Summary
Weather Forecast
An arctic high pressure is moving in, giving clearing skies and cold temps through the weekend. The daily high temperature at Treeline will be -19 on Saturday, dropping to -21 overnight, and back up to -7 on Sunday. Outflow (North-Easterly) winds are currently strong through out he park, but are forecast to abate once the Artic settles in.
Snowpack Summary
Strong NE winds are building fresh windslabs in unusual places. The Mar. 10th interface of suncrust on all solar aspects and possibly small surface hoar on shaded slopes, is now buried down 20-40cms. The Feb 22 persistent weak layer is down 90-130cm and consists of 3-7mm surface hoar on all aspects up to 2450m as well as a crust on solar aspects.
Avalanche Summary
No new avalanches have been reported in park in the past couple of days. Isolated instances of skiers triggering the February 22nd weak layer continue to occur in neighboring areas.
Confidence
Problems
Wind Slabs
Strong N-NE winds are building fresh windslabs.
- Keep an eye out for reverse loading created by North through East winds.
- If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
The February 22 surface hoar/sun crust layer is down 90-130cm. Skier-triggering is possible in shallower areas but otherwise this layer will take a big trigger to be activated such as a small avalanche stepping down or large load impacting the slope.
- Avoid steep convexities or areas with a thin or variable snowpack
- Be aware of the potential for wide propagations.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 15th, 2020 8:00AM
