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Avalanche Forecast

Archived

Nov 19th, 2023–Nov 20th, 2023

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

Regions

Brazeau, Cirrus-Wilson, Icefields.

Recently formed wind slabs in alpine features remain our main concern.

Early Season Conditions persist, so travel with caution.

Confidence

Low

Avalanche Summary

No field patrol occurred on Sunday. Whumphing was reported in the Hilda ridge area on Saturday.

Tuesday

No field patrol occurred on Sunday. Whumphing was reported in the Hilda ridge area on Saturday.

Wednesday

No field patrol occurred on Sunday. Whumphing was reported in the Hilda ridge area on Saturday.

Snowpack Summary

The snowpack is still generally very shallow with only 25-40cm at treeline. The alpine is heavily wind effected, with scoured windward slopes and ridges, and deposits up to a meter deep suspected in leeward features.

Tuesday

The snowpack is still generally very shallow with only 25-40cm at treeline. The alpine is heavily wind effected, with scoured windward slopes and ridges, and deposits up to a meter deep suspected in leeward features.

Wednesday

The snowpack is still generally very shallow with only 25-40cm at treeline. The alpine is heavily wind effected, with scoured windward slopes and ridges, and deposits up to a meter deep suspected in leeward features.

Weather Summary

Monday will bring sun and cloud, no new snow, and -8 °C. Tuesday will be isolated flurries, -7 °C, and Southwest winds 25-40 km/h. Wednesday will be similar to Tuesday.

Terrain and Travel Advice

  • Watch for areas of hard wind slab on alpine features.

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.