Avalanche Forecast

Issued: Feb 9th, 2014 8:49AM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is moderate. Known problems include Storm Slabs.

Avalanche Canada ghelgeson, Avalanche Canada

Increased snowfall and strong SW winds will increase the hazard late Monday. If you see anything of interest, please let us know by submitting an observation using the CAC Mobile App.

Summary

Confidence

Fair - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

Synopsis: The ridge of high pressure has long overstayed its welcome. Thankfully it makes its exodus from the province opening the door to strong zonal flow that should deliver one storm after another this week. Game on.(Expect lesser amounts in the north of the region throughout the forecast period.)Monday: Freezing Level: 800m; Precip: 5/10 cm Wind: Light, SWMonday Night: Wind: Light SW | Strong/Extreme W/SW at ridgetop.Tuesday: Freezing Level: 900m; Precip: 5/10 cm Wind: Light/Mod SW | Strong W/SW at ridgetop.Wednesday: Freezing Level: 1400m; Precip: 15/20 cm Wind: Moderate SW | Strong/Extreme SW at ridgetop.

Avalanche Summary

Avalanche activity over the last four days has been limited to surface sluffing resulting in loose snow avalanches to size 1 in steep terrain.

Snowpack Summary

A small front came through the region on January 29th leaving around 10 cm of snow in it's wake. Outflow winds (out of the N/NW) have formed small wind slabs in wind exposed terrain at and above treeline. Well settled faceted snow can be found on the surface in wind protected features. Just below the surface a weak layer exists that consists of large surface hoar (widespread in most sheltered and shaded areas at all elevations), a sun crust on south facing slopes, faceted grains (in colder areas or areas with a thinner snowpack), or a combination of the above. This variable weak layer is expected to become a significant problem this week as snow makes it's return to the province. The rest of the upper and mid-snowpack are generally well consolidated. A facet/crust weakness near the bottom of the snowpack has gone dormant for now but may rear it's ugly head again in the future. The depth of this layer makes triggering an avalanche unlikely but the consequences would be very serious.

Problems

Storm Slabs

An icon showing Storm Slabs
Light snowfall isn't expected to have a big impact Monday, but be sure that your plans allow for a safe exit from the backcountry as increasing snow and strong winds quickly increase avalanche hazard late in the day.
Scale back your exposure to avalanche terrain as hazard increases throughout the day.>Be cautious as you transition into wind affected terrain.>Remain vigilant for changing conditions.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible - Likely

Expected Size

1 - 3

Valid until: Feb 10th, 2014 2:00PM