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Avalanche Forecast

Archived

Jan 15th, 2024–Jan 16th, 2024

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

Coquihalla, Harrison-Fraser, Manning, Skagit.

Watch out for wind slabs in unusual places, such as south-facing slopes and lower down slopes than you might expect.

Wind-sheltered terrain should still offer excellent riding conditions.

Confidence

Moderate

Avalanche Summary

Since the end of last week, a few natural wind slab avalanches have been reported during active wind transport from northerly winds. Avalanches have generally been on southerly aspects at treeline and above, up to size 2.5.

Several small loose dry avalanches have been reported in wind-sheltered terrain at lower elevations.

If you head into the backcountry, please consider submitting a MIN report.

Snowpack Summary

Wind-affected snow surfaces in exposed terrain at treeline and above, including reactive wind slabs on south-facing terrain due to recent northerly winds. In wind-sheltered terrain, snow remains largely unconsolidated powder.

Roughly 100 cm of recent snow sits atop a crust with a generally well-settled and stable lower snowpack.

With recent snowfall lower elevation areas may now be at the threshold for avalanches.

Weather Summary

Monday Night

Mostly clear with no precipitation, west alpine winds 0 to 20 km/h, treeline temperature -6 °C.

Tuesday

Mostly sunny with no precipitation, southwest alpine winds 20 to 40 km/h, treeline temperature -5 °C.

Wednesday

Cloudy with 10 to 20 cm of snow, southwest alpine winds 10 to 40 km/h, treeline temperature -12 °C.

Thursday

Mostly cloudy with no precipitation, southeast alpine winds 20 to 40 km/h, treeline temperature -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid lee and cross-loaded slopes at and above treeline.
  • Seek out sheltered terrain where new snow hasn't been wind-affected.

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.