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Avalanche Forecast

Archived

Apr 2nd, 2019–Apr 3rd, 2019

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

Regions

Jasper.

Watch for signs that the supportive surface crust is breaking down with daytime warming. When this occurs be well away from avalanche terrain.

Weather Forecast

There will be some overnight recovery tonight offering stability to the morning snowpack.  A mix of sun and cloud for Wednesday with daytime highs in the alpine of close to zero centigrade.  Some light precipitation is forecast overnight on Wednesday and Thursday morning with freezing levels of close to 1900m below which expect rain.

Snowpack Summary

The snowpack is isothermal at treeline and below on all aspects (and into the alpine on solar) - the upper snowpack in these areas has undergone multiple melt-freeze cycles, a strong crust in the morning will weaken with solar input/daytime warming. On north facing alpine slopes up to 15cm of settled storm snow overlies previous old dry surfaces.

Avalanche Summary

Confidence

Intensity of incoming weather systems is uncertain on Thursday

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.