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

Feb 12th, 2025–Feb 13th, 2025

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

Regions

Glacier.

Watch for sluffing of loose, dry snow in steep terrain.

The persistent slab problem is most reactive where a cohesive slab sits on top of a crust.

Confidence

High

Avalanche Summary

We have observed size 1 dry loose natural and rider triggered avalanches in steep unsupported terrain.

Field teams and MIN reports have observed some whumping and cracking of the surface wind slab.

Monday- Size 1 skier accidental wind slab on 8812 peak occurred on a east aspect at approx 2600m.

Neighbouring operations, particularly to the west, are still reporting rider & remote triggered avalanches on the Jan 30th layer.

Snowpack Summary

Isolated pockets of wind slab are lingering near ridgetop and in exposed terrain. Areas sheltered from the wind are faceted with good quality skiing.

A weak layer of surface hoar, facets and/or suncrust (Jan 30th drought layer) is 30-50cm down from the snow surface. Recently this layer is most reactive where a crust exists on solar facing terrain.

The Jan 7th layer is down 50-80cm, and is comprised of surface hoar in sheltered areas and/or a thin crust on steep S aspects.

Weather Summary

Exiting cold, dry air will usher in warmer temperatures.

Tonight Clear periods. Alpine temperature low -18°C. Ridge wind SW-15 km/hr.

Thurs Mix of sun and cloud. Alpine high -9°C Wind SE 15 km/hr.

Friday Cloudy with sunny periods. Alpine high -10 °C. Light ridge wind.

Sat Cloudy/isolated flurries Alpine high -14°C. Wind W 5m/h.

Terrain and Travel Advice

  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

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.

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.