Avalanche Forecast
Issued: Jan 10th, 2017 8:02AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
chris gooliaff,
Parks Canada
Overnight winds may have created reactive windslabs in alpine and tree-line lee features. Use caution when entering the top of your line.
Summary
Weather Forecast
We are back into the cold weather today, with mainly sunny skies and an alpine high of -20*C. Winds should drop to light northerlies. For Wed/Thursday, temp's should warm a few degrees and the sunshine will continue with light north winds. No snow is in the forecast until possibly the weekend.
Snowpack Summary
10-15cm of low density snow fell in the last 36hrs. Overnight SW winds will have created windslabs along the lee of alpine ridges. This sits on a variety of old surfaces, from hard windslab, to breakable crust, to faceted soft snow in protected areas. Field snowpack tests are producing mod-hard resistant planar results in the upper 50-70cm.
Avalanche Summary
Numerous loose and storm slab avalanches were observed yesterday from Mt Macdonald and Mt Tupper, all originating from steep, unskiable terrain. No new avalanches have been observed by our field crews in the backcountry over the last couple of days.
Confidence
Problems
Wind Slabs
Overnight winds will have whipped the new snow around and created reactive soft slabs in alpine and tree-line lee features. These new slabs sit on old, widespread windslabs, which hide spotty surface hoar.
Use caution in lee areas. Recent wind loading have created wind slabs.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 11th, 2017 8:00AM
