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Avalanche Forecast

Archived

Dec 6th, 2024–Dec 7th, 2024

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

Regions

Northwest Inland, Howson, Kispiox, Microwave-Sinclair, Ningunsaw, Ningunsaw, Ningunsaw, North Bulkley, South Bulkley, South Bulkley, South Bulkley, Telkwa.

Recent rain has ravaged the region.

If you travel to higher elevations in search of dry snow, be cautious in wind-loaded areas. Recently formed wind slabs may be reactive to human-triggering

Confidence

Moderate

Avalanche Summary

A natural avalanche cycle occurred a few days ago as rain and warm temperatures infiltrated the region. Slab avalanches up to size 3 were observed in the Smithers and Seaton areas.

If you head to the backcountry please consider submitting your observations to the Mountain Information Network.

Snowpack Summary

New snow accumulates atop a crust or moist snow from rain in the past few days. Strong winds will create heavily wind-affected surfaces and redistribute new snow into fresh wind slabs.

We suspect two surface hoar layers in the mid-snowpack have been cleaned out by the rain.

Deeper in the snowpack, a rain crust from early November seems to be bonding well to the surrounding snow.

Weather Summary

Friday Night

Cloudy with up to 3 cm of new snow. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Saturday

Cloudy with 5 to 10 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Sunday

A mix of sun and cloud with isolated flurries. 15 to 30 km/h northwest ridgetop wind. Treeline temperature -3 °C.

Monday

A mix of sun and cloud with isolated flurries. 15 to 30 km/h northwest ridgetop wind. Treeline temperature -3 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

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.