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Archived

Avalanche Forecast

Feb 28th, 2018–Mar 1st, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Banff Yoho Kootenay.

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

Weather Forecast

It is expected to warm up to near zero in the valley tomorrow by midday tomorrow. Ridge elevation should remain in the -10 range. Wind will be from the due South with light to moderate velocity. Very light precip with minimal accumulations on Thursday, and up to 5 cm on Friday.

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

Avalanche 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

Persistent Slabs

We continue to track three mid-snowpack weak layers from earlier this winter. They are bonding well and test results no longer show failures here. This problem continues to be in the back of our minds, but our confidence in the snowpack has improved.
Ride large slopes one at a time and spot your partners from safe locations.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely

Expected Size: 2 - 3