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Avalanche Forecast

Archived

Mar 7th, 2016–Mar 10th, 2016

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

Regions

Waterton Lakes.

Travel conditions are good... bring your crampons. Avoid exposure to obvious hazards like cornices or slopes with glide cracks.

Weather Forecast

Tuesday: Strong SW winds, easing to Moderate. A mix of sun and cloud. Freezing Level below 1600m. Wednesday: Moderate SW wind. Some sun. Freezing level below 1600m. Thursday: Chinook conditions - cloudy, with some models predicting light snowfall. Extreme SW winds, with Freezing Level rising to Treeline.

Snowpack Summary

20mm of precipitation during the weekend came mainly as rain. The wet surface snow froze on Sunday night, forming a thick Melt-Freeze Crust, softening during the day on solar aspects. Below is a moist but well-settled upper snowpack.

Avalanche Summary

Rain at all elevations on Saturday caused a widespread loose wet avalanche cycle. Several of these were large, near the divide. New glide cracks were observed on Monday, on a steep solar aspect slope Below Treeline.

Confidence

Due to the number and quality of field observations

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.