Avalanche Forecast
Issued: Nov 28th, 2016 6:47PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Tim Haggarty,
Avalanche Canada
Still litlle to no observations in the Little Yoho region right now. Expect conditions to be rugged at lower elevations. Give recently formed windslabs a bit more time to settle out.
Summary
Weather Forecast
Warm moist air from the pacific is colliding with cold dry continental air over the divide right now. A few flakes, cooler temps and light NW has been the result. Tuesday the pacific air will start to over-ride the arctic air and a mild inversion will result. Some flurries are likely Wed as the pacific flow invades.
Snowpack Summary
10-35cm of recent snow with W winds has formed wind slabs in many areas in the alpine and isolated areas at treeline. The Nov 12 crust down 20-50cm is facetting and weakening and is found everywhere except on high N slopes. At this point the bond to the crust seems strong. Below this the base is quite supportive except in thin snowpack areas.
Avalanche Summary
No new reported or observed avalanches today and little to no observations in the Little Yoho region. Nearby, small skier triggered windslabs have been seen over the last few days .
Confidence
Problems
Wind Slabs
In open areas at treeline these start to become a concern and they become common in lee features in the alpine. The precip has stopped, winds have become light and temps are cooling: these slabs should settle out but deserve respect until they do.
- Be careful with wind loaded pockets while approaching and climbing ice routes.
- Use caution in lee areas. Recent wind loading has created wind slabs.
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 29th, 2016 4:00PM
