Avalanche Forecast
Issued: Nov 26th, 2014 7:48AM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeExpect variable conditions as outflow winds kick up. Some slopes could be blown bare while others see deep wind slabs form.
Summary
Confidence
Fair - Due to the number of field observations
Weather Forecast
Summary: Clearing and cooling with invading arctic airmass. Expect outflow winds to pick up in coastal inlets and valleys. Thursday: Clearing. Temperatures at 1500 m drop close to -20. Winds are moderate to strong from the northeast. Friday and Saturday: Mainly sunny and cold. Winds are strong from the NE with very strong outflow winds in valleys and inlets.
Avalanche Summary
Reports from Monday include a few small 10-20cm deep naturally releasing storm and wind slabs north of Stewart, as well as some sloughing on isolated steep slopes below treeline. We have had no reports from popular recreational spots in the region. Let us know what you are seeing at forecaster@avalanche.ca.
Snowpack Summary
As we begin our forecasting season, we are working with limited information from the field. Early reports suggest there's enough snow for avalanches at alpine and some treeline elevations. Recent snow has likely been redistributed by gusty and variable winds into slabs on lee slopes at alpine and treeline elevations. This snow may overlie a weak old snow surface (surface hoar, facets and/or a crust) which developed during November's dry spell. Check the bond of the snowpack at this level and take a cautious approach as new snow builds deeper above this layer.
Problems
Wind Slabs
We're expecting outflow winds over the next few days. This could strip windward slopes and build dense or hard wind slabs in exposed lee terrain, possibly at all elevations.
Avoid travelling in areas that have been reverse loaded by winds.>Be cautious as you transition into wind affected terrain.>
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 27th, 2014 2:00PM