Avalanche Forecast
Issued: Apr 8th, 2018 4:11PM
The alpine rating is Storm Slabs and Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Moderate - Due to the number of field observations
Weather Forecast
TONIGHT: Mostly clear. Ridge wind moderate to strong, west. Alpine temperature near -2. Freezing level 1000 m.MONDAY: Mostly sunny. Ridge wind moderate to strong, west. Alpine temperature near +3. Freezing level 2200 m.TUESDAY: Mostly cloudy. Ridge wind moderate to strong, southwest. Alpine temperature near +4. Freezing level 2600 m.WEDNESDAY: Mostly sunny. Ridge wind moderate to strong, west. Alpine temperature near 0. Freezing level 2000 m.
Avalanche Summary
There were no reported of avalanches in the region following Saturday's storm, however near Fernie; widespread storm slab and loose wet avalanche activity up to size 2.5 was reported on Sunday. The new snow was reactive to skier and explosive triggers on all aspects above 1400 m. And one natural size 2.5 was reported on an easterly aspect at 1550 m.On Friday both natural and easily skier-triggered wind slab releases up to size 1.5 were reported in the southern part of the region, while several loose dry avalanches were reported in the Crowsnest Pass area. Read recent MIN report here. Thursday in the Elkford area, recent small (size 1) loose/dry avalanches were reported on northerly aspects while loose/wet were observed on solar aspects. In the southeast corner of the region skier-triggered loose/dry avalanches were reported to be running far on a recently buried crust.
Snowpack Summary
With about 20 cm on new snow on Sunday morning, 20-40 cm of snow sits above a variety of crusts on all but high north aspects. Northern parts of the region have less new snow than southern parts. Wind has formed hard slabs in lee features, and in some cases the snow may be poorly bonded to the crusts.Multiple crusts exist within the top 100 cm of the snowpack. Some parts of the region may have a surface hoar layer roughly 60 cm deep on north aspects at treeline.A well settled midpack sits above sugary facets in many parts of the region, especially thin snowpack areas.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Cornices
Aspects: North, North East, East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 9th, 2018 2:00PM