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Avalanche Forecast

Archived

Jan 1st, 2023–Jan 2nd, 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.

While the likelihood of triggering avalanches may be decreasing, the consequences if you do remain very high.

Confidence

Moderate

Avalanche Summary

No recent avalanche activity has been reported in the region.

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

Snowpack Summary

Roughly 40 to 50 cm of new snow continues to settle and bond over a weak layer buried just before Christmas. This layer consists of sugary faceted grains and/or small surface hoar and has been responsible for numerous large natural and human-triggered avalanches throughout the BC interior since December 27.

The mid and lower snowpack generally remains weak and facetted, with a number of weak layers present. A layer of particular concern that was buried in November, consists of weak facets, surface hoar, and/or a thin crust, and is roughly 90 to 140 cm down from the surface.

Snowpack depth is roughly 150 cm at treeline.

Weather Summary

Sunday night

Mainly cloudy, with no precipitation. Light southwest winds. -5 to -10 C at treeline.

Monday

A mix of sun and cloud, no precipitation. Light southwest winds. -5 to -10 C at treeline. Potential for a strong temperature inversion in the alpine.

Tuesday

A mix of sun and cloud, no precipitation. Light southwest winds. -5 to -10 C at treeline. Potential for a strong temperature inversion in the alpine.

Wednesday

Mainly cloudy, with flurries. Light southerly winds. -5 to -10 C at treeline.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep in mind that human triggering potential persists as natural avalanching tapers off.
  • Avoid thin areas like rock outcroppings where you're most likely to trigger avalanches failing on deep weak layers.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.

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.