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Avalanche Forecast

Archived

Apr 19th, 2019–Apr 20th, 2019

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

South Coast Inland.

Plan your day to avoid new wind slabs above 2000 m and southerly slopes during the heat of the day.

Confidence

High -

Weather Forecast

FRIDAY NIGHT: Clear skies, light northeast wind, alpine temperature -5 C, freezing level 1500 m dropping to 1000 m.

SATURDAY: Clear skies, light to moderate north wind, alpine temperature -2 C, freezing level 1000 m rising to 2000 m.

SUNDAY: Mix of sun and clouds, light southwest wind, alpine temperature -2 C, freezing level 2000 m.

MONDAY: Mostly cloudy with isolated flurries, trace accumulation, moderate southwest wind, alpine temperature 0 C, freezing level 2200 m.

Avalanche Summary

There were no avalanche reports available for the region. The neighbouring Sea To Sky region observed a natural loose wet avalanche cycle during Thursday and Friday’s storm.

If you have any recent observations during your travels, we would greatly appreciate it if you posted a photo or any other information to the Mountain Information Network (MIN). Thanks!

Snowpack Summary

Around 10 to 20 cm of recent snow has likely accumulated above 2000 m. The snow fell with strong southwest wind, likely forming new wind slabs and cornice growth in the alpine. The snowpack below treeline is saturated and rapidly melting.

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 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.