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Avalanche Forecast

Archived

Apr 2nd, 2017–Apr 5th, 2017

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

Regions

Waterton Lakes.

Fast travel makes this a good time to explore.

Weather Forecast

Monday: Partly cloudy. Snow flurries/rain showers. Ridgetop wind light N. Treeline temps, High -5, Low -8.Tuesday: Sunny. Ridgetop wind light SW (trending moderate in the evening). Treeline temps, High -4, Low -8.Wednesday: Sunny. Ridgetop wind moderate SW. Treeline temps, High 1, Low -4.

Snowpack Summary

Below treeline -  New snow has largely been absorbed by the strong surface crust.At treeline and in the alpine - Strong-extreme S winds on Sunday stripped exposed areas to old crust or bare ground, and built pockets of windslab in lees.  The basal facets likely persist in some locations, 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

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.