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Avalanche Forecast

Archived

Nov 14th, 2015–Nov 15th, 2015

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

Regions

Jasper.

Weather Forecast

Overnight on Saturday and into Sunday morning another 15cm of snow is forecast for the Icefields area. Winds from the south south east are forecast to be moderate.

Snowpack Summary

Snow depths are highly variable between elevation ranges and East to West across the region. Greater depths can be found in the Columbia Icefields area. Moderate to strong ridge top winds have created soft slabs on top of a faceted and shallow existing snowpack.

Avalanche Summary

Some small slabs and loose snow slides were observed at treeline elevations in the Icefields area's today.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Tuesday

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.