Avalanche Forecast

Archived

Jan 31st, 2015–Feb 1st, 2015

Alpine

Natural avalanches unlikely.

Treeline

Natural avalanches unlikely.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Regions

Little Yoho.

Alpine ski conditions have been freshened up by new snow. Skiing at treeline and below will be "rugged" due to breakable crust. More snow on the way Monday, Tuesday. SH

Weather Forecast

Light gusting moderate alpine Westerly winds on Sunday with light snow (5cm) of snow starting in the afternoon. Alpine temperatures will stay in the -10C range over the next 3 days. Monday and Tuesday look unsettled with 20-30cm in the forecast by Tuesday night. Keep your fingers crossed.

Snowpack Summary

5-15cm of low density snow in the last 24 hours. The Jan 30 melt/freeze crust can be found up to 2300m (higher on solar aspects). In isolated areas we expect the Dec. 18 surface hoar layer down approximately 50-70cm to remain, but triggering is unlikely.

Avalanche Summary

No new natural avalanche activity was observed or reported today.

Confidence

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.