Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Dec 1st, 2022–Dec 2nd, 2022

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 Coastal, Kitimat, Nass, Rupert, Seven Sisters, Shames, Stewart, Howson, Ningunsaw.

Continue to assess for wind slab as you move through terrain. Wind slabs could be found on all exposed slopes. As the cold temps settle in be sure to increase your margin for safety.

Confidence

Moderate

Avalanche Summary

Yesterday a natural wind slab cycle to size 2.5 was observed in the northwest part of the region. These avalanches occured on northwest , west and southwest aspects at treeline and above. These avalanches are a result of ongoing outflow winds.

Snowpack Summary

Over the past few days strong outflow winds have scoured easterly slopes and created wind slab on west and south slopes.

A layer buried in mid November can be found down around 70 to 100cm at treeline and above. This layer consists of a crust below 1200m and a layer of surface hoar above this elevation.

The depth of the snowpack at treeline varies widely from 100-200 cm and tapers rapidly below treeline. Many early-season hazards such as rocks, stumps, and open creeks exist below treeline.

Weather Summary

Thursday Night

Trace amounts of new snow expected. Strong outflow winds. Temperatures at 1500m around -18.

Friday

Strong outflow winds and Mostly sunny with temperatures at 1500m around -18.

Saturday

Mostly sunny with no new snow expected. Outflow winds easing throughout the day and the possibility of a temperature inversion with a high of -5 at 1500m.

Sunday

Sunny with no new snow expected. Temperature inversion continues with the possibility of a above freezing layer at 1500m. Light winds.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Stay off recently wind loaded slopes until they have had a chance to stabilize.
  • Use ridges or ribs to avoid areas of wind loaded snow.

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.