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Avalanche Forecast

Archived

Apr 3rd, 2017–Apr 6th, 2017

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

Regions

Waterton Lakes.

A healthy dose of new snow will make for good skiing, especially in the early hours. Be prepared to manage the cycle of small loose wet avalanches during the heat of the day.

Weather Forecast

Tuesday: Sunny. Ridgetop wind light SW (trending moderate in the evening). Treeline temps, High -4, Low -8.Wednesday: Sunny. Ridgetop wind moderate-strong SW. Treeline temps, High 1, Low -4.Thursday: Mostly Sunny. Ridgetop wind mod-strong SW. Treeline temps, High 3, Low 1.

Snowpack Summary

An up-slope event has evenly distributed up to 25cm of new snow through our the park.  This overlies old crusty surfaces, bare ground, and isolated pockets of wind slab from Sundays strong-extreme south winds. Below this the mid snowpack is well settled and strong. Basal facets likely persist in some areas, but have been unreactive since mid-March.

Avalanche Summary

No new avalanches have been observed or reported.

Confidence

Due to the number of field observations

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.