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Avalanche Forecast

Archived

Nov 25th, 2013–Nov 26th, 2013

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
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.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

Weather Forecast

Mixed sun and cloud with moderate westerly winds for Tuesday. Sunny day on Wednesday with freezing levels rising to 1800 metres and then a slight cooling trend for the end of the week. We may see some light snowfall by Friday.

Snowpack Summary

Eighty to 100cm of snow exists at treeline locations. The mid pack is slowly becoming more supportive and travel is becoming easier. The October 27 crust is still present 10-15 cm from the ground in many locations above 2200 metres. This crust was a significant sliding layer in last weeks avalanche cycle and should be monitored carefully.

Avalanche Summary

No 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.