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Avalanche Forecast

Archived

Jan 28th, 2013–Jan 29th, 2013

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

Regions

Jasper.

Weather Forecast

Light snowfall over next 24 hours (1-5cm), followed by cold and clear Arctic airmass on Tuesday, with the possibility of more snow later in the week.  Winds will be generally light to moderate and Westerly.  Temps continue to drop to more seasonal norms and may get as low as -25 in the Columbia Icefield Area by Tuesday.

Snowpack Summary

Light scattered precipitation (1-3cm) throughout Jasper in the past 24 hours.  No significant change to snowpack structure:  windslabs in exposed lee features, faceted midpack at lower elevations, and poor travel with difficult trail-breaking below treeline.

Avalanche Summary

No new avalanches were observed or reported today.

Confidence

Intensity of incoming weather systems is uncertain

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.