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Avalanche Forecast

Archived

Mar 19th, 2020–Mar 22nd, 2020

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.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Waterton Lakes.

The big player is the sun right now. Solar input will weaken surface snow and cornices. The odd isolated windslab likely exists in the alpine.

Weather Forecast

Friday: Sun and cloud, with freezing level rising to 1800m. Light west winds

Saturday: Cloudy with sunny periods. freezing level 1700m. Keght west winds with the occasional stronger gust.

Sunday: Mix of sun and cloud with southwest winds increasing through the day

Snowpack Summary

5cm of recent snow distributed by L NE winds overlies a thick MFcr on solar aspects. North Faces are generally wind affected from previous strong northwest through northeast winds. The midpack is strong and well settled, though basal weaknesses exist in thinner snowpack areas.

Avalanche Summary

Several natural size 1- 1.5 thin slab and dry loose avalanches were observed on steep slopes as the sun came out on Thursday, and ran surprisingly far on a melt freeze crust.

Confidence

The weather pattern is stable

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.