Avalanche Forecast

Issued: Feb 28th, 2018 4:00PM

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

aaron beardmore, Parks Canada

Little Yoho.

Be watchful for windslabs at high elevations due to light wind transport and warmer temps on Thursday.

Summary

Weather Forecast

The temps tomorrow could climb as high as zero in the valley bottoms. Ridge temps should remain near -10. The freezing level could hit 1700m by mid afternoon. Minimal precip tomorrow but up to 4-5cm on Friday. The wind is coming from the South in the moderate range at ridge elevation.

Snowpack Summary

5 cm of loose snow on the surface at treeline with wind slabs forming in open areas at higher elevations. Three mid-pack weak layers of surface hoar and/or facets appear well bonded, but are worth keeping in mind on bigger slopes. Snowpack tests are showing no results on those layers.

Avalanche Summary

No avalanches observed or reported.

Confidence

Problems

Wind Slabs

Wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.

Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Mar 1st, 2018 4:00PM