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Avalanche Forecast

Archived

Feb 22nd, 2022–Feb 23rd, 2022

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

Jasper.

Small pockets of good skiing can still be found in sheltered terrain at treeline. Hielda is skiing surprisingly well.

Be on the lookout for reverse loading from Northerly wind.

Weather Forecast

Wednesday: A mix of sun and cloud with isolated flurries and trace precipitation. Alpine temperature High -15 C. Ridge wind west: 10 km/h. Freezing level at valley bottom.

Thursday: Mix of sun and cloud. No precipitation. Alpine high -11. NW wind 10-25km/h. Freezing level valley bottom.

Friday: Mix of sun and cloud. No Precipitation. Wind West 10km/h

Snowpack Summary

10-15 cm of recent snow has been redistributed by recent Northerly winds causing reverse loading in many locations with wind slab development in Alpine and exposed terrain at treeline. A weak temperature crust can be found up to 1900m on all aspects with a sun crust on solar aspects up to 2800m. Basal facets & depth hoar present at throughout area

Avalanche Summary

A few Natural size 1 dry loose avalanches were observed on the Icefields Parkway on Tuesday, Feb 22. All occurred in steep terrain with unsupported features.

Confidence

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.

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.