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Avalanche Forecast

Archived

Mar 19th, 2020–Mar 20th, 2020

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

Regions

Little Yoho.

Be mindful of prolonged solar input. It can suddenly increase the sensitivity of the wind slab and/or cause cornices to fail.

Weather Forecast

Friday will be mainly sunny with cloudy periods and a small chance of flurries. Temps will range from -16 to 0 as the freezing level rises to 1400m. Ridge top winds will be light from the west. Much of the same for Saturday and Sunday.

Snowpack Summary

5-10cm of snow accumulation over the last few days. Widespread wind effect in the alpine from recent multidirectional winds. Sun crust on steep solar aspects. The deep snowpack of Little Yoho is generally strong with few weaknesses.

Avalanche Summary

Several solar triggered small loose avalanches observed Wednesday and Thursday. Otherwise, no new avalanches observed or reported.

Our observations are very limited and we appreciate your reports to the MIN.

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.