Avalanche Forecast

Issued: Jan 27th, 2019 4:24PM

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

Avalanche Canada mconlan, Avalanche Canada

Recent winds may have formed new slabs at high elevations. Don't discount the warm air either, especially on sun-exposed slopes.

Summary

Confidence

High -

Weather Forecast

SUNDAY NIGHT: Clear skies, freezing level below valley bottom.MONDAY: Mostly clear skies, light northwest winds, alpine temperature 0 C, freezing level 2000 m with inversion conditions.TUESDAY: Mix of sun and clouds, light west winds, alpine temperature 1 C, freezing level 2500 m with inversion conditions possible.WEDNESDAY: Mostly cloudy, light west winds, alpine temperature 0 C, freezing level 2000 m with inversion conditions possible.

Avalanche Summary

Small natural wet loose avalanches were observed on southerly aspects on Saturday. Otherwise, no new avalanches were observed.

Snowpack Summary

The snow surface has been impacted by warm air temperatures, the sun, and recent strong northwest winds. Above 2000 m, you will likely find a melt-freeze crust on southerly aspects, wind-loaded terrain features on southwesterly aspects, and dry, wind-effected snow on northerly aspects. Below 2000 m, expect to find a crust on all aspects.Beneath this, around 40 to 60 cm of snow sits on a melt-freeze crust on south aspects and a spotty weak layer of surface hoar or sugary faceted grains. There have been no observations of avalanches on this layer and snowpack test results suggest the overlying snow is bonding to the layer. Where this layer exists, it is most likely to be found between 1700 m and 2000 m.The remainder of the snowpack is well-settled.

Problems

Wind Slabs

An icon showing Wind Slabs
Recent northwest winds have likely formed wind slabs. Use caution in lee terrain features adjacent to ridges.
Watch for signs of instability such as whumpfing, cracking, or recent avalanches.Pay attention to overhead hazards like cornices, as they may weaken with warm air.Use caution in lee areas. Recent wind loading has created wind slabs.

Aspects: North, North East, East, South East, South, South West.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Jan 28th, 2019 2:00PM