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Avalanche Forecast

Archived

Apr 23rd, 2019–Apr 24th, 2019

Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.

Regions

Little Yoho.

Weather Forecast

Wednesday will be mostly cloudy with some scattered flurries at higher elevations. Winds will rise to moderate to strong by mid-day and then decrease on Thursday. Freezing levels will be around 2000 metres.

Snowpack Summary

Strong SW winds on Monday has created wind effect in the alpine and some fresh wind slabs in lee terrain. The 20-50 cm of storm snow from last Friday is starting to settle and bond, but some concern still exists along the storm snow interface. Crusts or moist snow exist at lower elevations and on solar aspects depending on the time of day.

Avalanche Summary

A couple new natural and skier triggered avalanches were observed on Sunday, but there has been no reported avalanche activity in past 48 hours.

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 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.