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Avalanche Forecast

Archived

Apr 11th, 2019–Apr 14th, 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

Waterton Lakes.

Incoming precipitation will increase the hazard where it falls as rain down low, and where it will form new windslabs up high.

Weather Forecast

Friday: Cloudy with sunny periods and isolated showers/flurries with a 1900m freezing level and light winds.Saturday: Showers with flurries up high, up to 10cm of new snow above treeline. Freezing level 1800m with SW winds gusting to 85km/hSunday: Cloudy with sunny periods and light gusting strong SW winds. Freezing level 1600m.

Snowpack Summary

In most areas we are seeing a typical spring snowpack with crusts breaking down in the heat of the day. If you can get above snowline, expect to see 5cm of new, wet snow on Friday and 10cm on Saturday falling as rain at lower elevations. The midpack is generally moist and well settled.

Avalanche Summary

No new recent avalanches observed.

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.