Avalanche Forecast
Issued: Jan 13th, 2021 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Cornices.
mkoppang,
Avalanche Canada
Not as much snow fell as forecast but the wind did arrive with intensity from the SW. Use caution as windslabs are widespread and human triggerring is likely.
Summary
Confidence
Weather Forecast
On thursday a cooler air mass is forcast to move into the region causing skies to clear and winds become more light out of northwest. Temperatures will be around -10C for the better part of the day and no new precipitation is expected until later in the week.
Avalanche Summary
Numerous sz 2-2.5 avalanches were observed in alpine and treeline features on N and east aspects as well as avalanches likely caused by loose dry sluffing below cliff bands. All the observed avalanches occurred at the storm snow interface and not much evidence of any slides stepping down to deeper layers.
Snowpack Summary
15-20cm of snow fell over the past 24hrs under the influence of strong SW winds and warm temperatures. Widespread windslabs are being observed in alpine terrain and also in open areas at treeline that are failing down 30-40cm at the recent storm snow interface. The midpack is generally well settled and the November crust today was unreactive in rutschlock test at 2200m.
Terrain and Travel
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
- Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
- Avoid areas where the snow feels stiff and/or slabby.
Problems
Wind Slabs
New windslabs are developing following the recent storm and strong winds.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Cornices
Cornices have been growing and are prone to failure post storm
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Jan 14th, 2021 3:00PM
