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Avalanche Forecast

Archived

Apr 3rd, 2021–Apr 6th, 2021

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

Waterton Lakes.

 Wet loose avalanches are the primary concern down low but winter conditions are hanging on at upper elevations near Cameron Lake.

Weather Forecast

Freezing level rising to 2000m with 5mm of rain on Sunday.

Avalanche Canada's Mountain Weather Forecast is a great regional-scale resource for up-to-date weather information. Here you'll find snow amounts, freezing levels and other aspects of weather important to assessing conditions.

SPOTWX is a good resource for local scale weather forecasts.

Snowpack Summary

Moist surface snow on sun exposed slopes with a thick crust on all aspects up to 2000m. SW wind has formed wind slabs up to 30cm deep on lee slopes in the alpine. These wind slabs sit over a variety of old surfaces including a crust that exists to ridgetop except on high N aspects. Mid snowpack is well consolidated.

Avalanche Summary

Size 1.5 wet loose avalanche observed on an East aspect of Mt.Bertha on Friday. Multiple wet loose avalanches observed on solar aspects on the Akamina Parkway Thursday/ Friday.

Please consider submitting a MIN report if you see an avalanches.

Confidence

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.

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.