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Avalanche Forecast

Archived

Apr 2nd, 2015–Apr 3rd, 2015

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

Regions

Little Yoho.

Monitor local wind slab formation and how they are bonding to harder surfaces below.  SH

Weather Forecast

Freezing levels to valley bottom overnight Thursday, and up to 1700m Friday.  Light Westerly winds and only trace amounts of snow can be expected.

Snowpack Summary

Below treeline the snow pack is a thick melt-freeze crust.10-20 cm of recent snow has formed isolated wind slabs on east and north aspects. The midpack above treeline is well settled except for isolated thin areas where there are basal facets present. These have been dormant for quite some time.

Avalanche Summary

No new avalanches were observed or reported today.

Confidence

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.