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Avalanche Forecast

Archived

Jan 6th, 2023–Jan 9th, 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, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Waterton Lakes, Waterton.

Snowpack has been settling during the warm weather. Human-triggered avalanches are unlikely. Small windslabs may be found in isolated lees or extreme terrain.

Confidence

Low

Avalanche Summary

No new avalanches were observed this week, however limited field days.

Snowpack Summary

10-20cm of settling snow overlies a crust complex that is up to 30cm thick and has been found up to 2000m. The midpack is mostly well-consolidated snow in the alpine and at treeline. Below treeline the lower snowpack is still very faceted. The 2022-12-14 surface hoar layer can be found down 50-70cm and has still been reactive in tests.

Weather Summary

Saturday

Strong to extreme ridgetop winds with alpine temps around -2. Skies will be broken with no significant precip forecast.

Sunday

Strong ridgetop winds with alpine temps around -2. Skies will be broken with light flurries possible in the afternoon.

Monday

Strong ridgetop winds with alpine temps around -5. Light flurries and overcast skies

Terrain and Travel Advice

  • Be carefull around freshly wind loaded 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.