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Avalanche Forecast

Archived

Mar 6th, 2020–Mar 7th, 2020

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

Regions

Jasper.

Assess the bond of the new storm snow before stepping into bigger terrain. Submitting a MIN Report is a great way for avalanche forecasters to get more details of the snowpack.

Weather Forecast

Friday night into Saturday will see an additional 15cm of snow. Temperatures finally cooling to -20 on Sunday and slightly warming through out the coming week. We can expect light winds with the incoming snow, A moderate to strong Westerly flow will follow the storm.

More detailed forecast at: Mountain weather forecast

Snowpack Summary

35cm of recent new snow overlies a variety of surfaces depending on aspect and elevation. The new snow is bonding well to the old surface. Wind slabs are continuously forming on lee aspects. The Columbia Icefields region has a well bridged mid pack overlying basal facets and depth hoar. The northern part forecast region is shallower and weaker.

Avalanche Summary

Teams were down south in the columbia Ice fields area doing avalanche control. Minimal Natural activity out of steep solar and limited control work to Sz2 in the storm interface.

Use the Mountain Information Network to share your field trip observations contributing to the daily avalanche bulletin.

Confidence

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.

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.

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.