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Avalanche Forecast

Archived

Jan 10th, 2023–Jan 11th, 2023

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural and human triggered avalanches likely.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
Below Treeline
Natural avalanches possible, human triggered probable.

Regions

South Coast, North Shore, Sasquatch, Tetrahedron.

Conditions will be significantly different at higher elevations than lower down.

Riders-triggered storm slabs are possible, especially on leeward terrain features.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported this weekend with limited travel and visibility in the mountains. Please continue to post your observations and photos to the Mountain Information Network. It helps strengthen our data gathering.

Snowpack Summary

Up to 25 mm of wet snow is found at treeline and above, which sits over a melt-freeze crust down to 1200 m. The upper snowpack consists of moist snow overlying a few supportive crusts formed early January and late December. Below treeline, the snow surface is likely saturated.

Weather Summary

Overcast skies and dry conditions are expected until a deeper system will push heavier snowfalls into the region late evening Wednesday. This frontal system will lead a stalled atmospheric river over Coast Mountains through Friday night, bringing heavy precipitation and high freezing levels.

Tuesday night

Mainly clear, no precipitations, light southeasterly winds, freezing levels rising to 1500 m, low of -3C at treeline.

Wednesday

Increasing cloudiness, light snow up to 5 cm starting midday at higher elevations, rain at treeline and below, moderate southeasterly winds gusting 50 km/h, freezing levels around 1500 m, high of +2C at treeline.

Thursday

Stormy, 40-65 mm of rain, snow at upper elevation only, moderate southeasterly winds gusting 65 km/h, freezing levels around 2000 m, high of +4C at treeline.

Friday

Stormy, 50-70 mm of rain, snow at upper elevation only, moderate southeasterly winds gusting 65 km/h, freezing levels around 2000 m, high of +4C at treeline.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to the wind, once it starts to blow fresh sensitive wind slabs are likely to form.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Approach lee and cross-loaded slopes with caution.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.