Avalanche Forecast
Issued: Jan 26th, 2017 7:41AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
danyelle magnan,
Parks Canada
Pockets of wind slab are most likely to be reactive in areas with high consequences
Summary
Weather Forecast
A weak ridge of high pressure will continue to block hope of significant snow. Today and Friday will be mainly cloudy with a few flurries, an alpine high of -8'C and light winds. Saturday looks like we might get some sunshine with freezing levels rising to 1600m, alpine temps to -2'C and strong SW winds.
Snowpack Summary
~40cm of snow from last weeks storm is settling and is generally bonding. In isolated areas it overlies surface hoar and may be reactive. Variable wind effect exists in the alpine, and steep S aspects have breakable suncrust. Recent snowpack tests generally indicate that the snowpack is stubborn to triggering, however it is weakest a low elevations
Avalanche Summary
Recent natural avalanche activity has been limited to steep unskiable terrain such as off Mt Macdonald. However, there have been size 2.5 avalanches observed from this type of terrain regularly with avalanches running onto fans. Sluffing when skiing/riding steep terrain has also been observed.
Confidence
Wind effect is extremely variable
Problems
Wind Slabs
Wind slabs exist at ridge-top and on cross-loaded alpine features. They overlie a variety of surfaces, and are of most concern on steep terrain where the consequences of even a small avalanche are high, such as over cliffs and terrain traps.
Choose well supported terrain without convexities.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 27th, 2017 8:00AM
