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Avalanche Forecast

Archived

Jan 1st, 2017–Jan 2nd, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

Ski conditions are excellent in Little Yoho right now - just watch out for triggering wind slabs. Ice climbers - Mt Dennis should be fine as natural avalanches are unlikely, but the exposed slopes on Mt Stephen are more suspect (Twisted, etc).

Weather Forecast

An arctic ridge of high pressure is descending into the area and will dominate for the next few days. Dress warm, as lows of near -30 are expected with daytime highs reaching -18 under clear skies with light winds from the north. It looks like the temperatures will start to moderate and rise slowly by Wednesday.

Snowpack Summary

The storm snow from last week has settled and now tops a 150 cm snowpack at treeline. No active weak layers exist within the snowpack, and the main issue is wind slabs in alpine areas that were formed by strong winds over the past week. The snowpack will continue to stabilize with the onset of the cold, arctic air over the next few days.

Avalanche Summary

No new avalanches observed or reported on Sunday.

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.