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Avalanche Forecast

Archived

Dec 7th, 2017–Dec 8th, 2017

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

Regions

Purcells.

Seek the shade for the best and safest riding.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

FRIDAY: Sunny and warm above valley cloud. Light wind. Freezing level near 3300 m with a colder air layer in the valleys.SATURDAY: Sunny and warm above valley cloud. Light wind. Freezing level near 2800 m with a colder air layer in the valleys.SUNDAY: Cloudy. Light to moderate south-west winds. Freezing level near 3000 m. More details can be found on the Mountain Weather Forecast.

Avalanche Summary

On the whole, there has been little recent avalanche activity reported, but a natural avalanche cycle is expected on steep sunny slopes. A previous wind slab cycle has slowed down over the last few days.

Snowpack Summary

Intense warming will melt and weaken upper snowpack layers, particularly on steep sunny slopes. Warming also has the potential to wake up more deeply buried crust layers. Recently formed wind slabs are gaining strength, but may still be found in the lee of ridges and terrain breaks. Below treeline, the snowpack is shallow--look out for early season hazards like open creeks and tree stumps.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.