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Avalanche Forecast

Archived

Jan 3rd, 2023–Jan 4th, 2023

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

Shuswap, North Okanagan.

Consequences could be severe if a persistent weak layer is triggered. Stay disciplined and make conservative terrain choices.

Confidence

Moderate

Avalanche Summary

No recent avalanche activity has been reported in the region. However, there have been several recent reports of large human-triggered avalanches in neighboring regions.

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

Snowpack Summary

30 to 50 cm of snow continues to settle and bond over top of a weak layer buried just before Christmas. The lower snowpack is generally weak and facetted, with a weak layer buried in November, consisting of large, weak facets near the bottom of the snowpack.

Snowpack depth is roughly 150 cm at treeline.

Weather Summary

Tuesday night

Cloudy with no precipitation. Light south winds. -10 C at treeline.

Wednesday

A mix of sun and cloud, no precipitation. Light southeast winds. -10 C at treeline.

Thursday

A mix of sun and cloud, with flurries. Light to moderate southeast winds. -5 to -10 C at treeline.

Friday

Cloudy with flurries. Moderate southerly winds. -5 to -10 C at treeline.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid thin areas like rock outcroppings where you're most likely to trigger avalanches failing on deep weak layers.
  • Keep in mind that human triggering potential persists as natural avalanching tapers off.
  • Start with conservative lines and watch for clues of instability.

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.