Avalanche Forecast

Archived

Apr 26th, 2019–Apr 27th, 2019

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural and human triggered avalanches likely.

Treeline

Natural avalanches possible, human triggered probable.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches possible, human triggered probable.

Below Treeline

Natural avalanches unlikely.

Regions

Little Yoho.

Lots of snow and wind is forecast over the next week. Please be cautious in the alpine.

Weather Forecast

Winter is coming! 10 to 30 cm of snow is forecast for tomorrow with moderate west winds. Winds are expected to shift to the northeast Sunday and become strong. Cold temperatures and developing windslabs are expected. Conditions should change rapidly and caution is urged.

Snowpack Summary

Wind deposit can be found in lee alpine areas on surface hoar and poorly bonded snow (facets, crust). Bomber crusts are common on sun affected slopes. Isolated pockets of deep facets still exist on cold north exposures. There are also large cornices around. There is a lot going on in the alpine and more coming in. Take a moment to check your slope.

Avalanche Summary

No activity 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.