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Avalanche Forecast

Archived

Jan 13th, 2023–Jan 14th, 2023

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

Regions

Akamina, Crowsnest North, Crowsnest South.

Continually assess the snowpack for signs of instability with dynamic weather conditions.

Confidence

Moderate

Avalanche Summary

No significant avalanche activity has been reported in the last couple of days.

Please continue to share any observations or photos on the Mountain Information Network.

Snowpack Summary

High freezing levels produced moist surface snow up to 2000 m on Friday. As temperatures cool a crust will form.

Surface snow has been redistributed by recent winds in exposed terrain. In alpine areas, up to 10 cm of low-density snow overlies various firm layers. The mid snowpack is generally consolidated and sits above a weak, facetted lower snowpack.

Weather Summary

Friday night

Isolated wet flurries, trace accumulation. Moderate southwest ridgetop winds. Treeline low temperatures -6 C. Freezing level falling to 1500 m.

Saturday

Cloudy with flurries, up to 5 cm. Light to moderate southwest ridgetop winds. Treeline high temperatures around 0 C. Freezing level below 1700 m.

Sunday

Cloudy with flurries, up to 5 cm. Moderate and gusty southwest ridgetop winds. Treeline high temperatures -1 C, freezing level below 1500 m.

Monday

Cloudy with isolated flurries. Light southwest ridgetop winds. Treeline high temperatures -3 C, freezing level below 1100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Wind slabs are most reactive during their formation.
  • Pay attention to isolated alpine features as well as cross-loaded features at treeline.

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.