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Avalanche Forecast

Archived

Apr 10th, 2022–Apr 11th, 2022

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

Regions

Jasper.

We are experiencing all freeze, no melt weather pattern. Ridgetop windslabs are on a variety of firm surfaces but appear to be bonding. Investigate for unstable conditions on isolated terrain features. Avalanches could still occur in extreme terrain.

Weather Forecast

Select a specific area at Spot Wx for localized weather forecast conditions. Parkers ridge Saturday night will be -17C and clear skies.  Monday will be sun, cloud, no new snow, -12C, and light NE winds. Tuesday will be similar, lows of -19C, highs of -15C, and light East winds. Wednesday will be a repeat of Tuesday.

Snowpack Summary

5-15cm or new snow since Thursday was redistributed by NW-SW building soft wind slabs up 30cm deep mainly in the Alpine. This precipitation was rain at lower elevations. Windslabs on solar aspects rest on a sun crust into the alpine & a melt freeze crust up to 2300m. The mid pack is dense and supportive. Cornices are large.

Avalanche Summary

No patrol occurred on Saturday and nothing new reported. On Friday, a few dry loose avalanches up to size 1.5 occurred in steep rocky terrain from 2300-3000m. Explosives work on Friday produced only a few size 1.5 loose dry avalanches on Parkers ridge.

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.