Avalanche Forecast

Issued: Mar 13th, 2020 4:00PM

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

Parks Canada Tim Haggarty, Parks Canada

North winds have redistributed recent snow and are creating wind slabs in some unusual locations. Stay warm out there.

Summary

Weather Forecast

The arctic push is on with moderate North winds in the alpine and Eastern gap winds moving through the valleys that will persist through to Sunday. Cold air has flooded the region and -30C is expected overnight Friday in the alpine before some improvement Saturday afternoon .Expect winds to increase to strong in the alpine.

Snowpack Summary

15-25cm of snow over the last 3 days has been redistributed by moderate winds of variable direction at treeline and above creating wind slabs in open areas. On steep solar a thin crust has formed on the surface. The deep snowpack of Little Yoho is generally quite strong with few weaknesses.

Avalanche Summary

No new natural avalanches observed in Little Yoho  Friday.

Confidence

Wind speed and direction is uncertain on Saturday

Problems

Wind Slabs

An icon showing Wind Slabs

Recent snow and west winds had developed stubborn slabs at ridge crest however Thursday evening winds shifted to the N and E and are expected to increase Saturday. Expect a different loading pattern than is usual.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 2

Valid until: Mar 14th, 2020 4:00PM