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

Mar 2nd, 2025–Mar 3rd, 2025

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

Regions

Glacier.

The persistent weak layer problem is particularly difficult to forecast, with high consequences if triggered.

Now is a good time to be making conservative terrain choices.

Confidence

Moderate

Avalanche Summary

Numerous wet loose and slab avalanches occurred in the past 3 days with daytime warming and solar input. These avalanches were up to size 3.0 and often gouged to ground at lower elevations where the snowpack had become isothermal.

Though the natural avalanche cycle is slowing today, human triggering remains possible.

Neighbouring operations have been seeing very large skier remote triggered avalanches on the facet interfaces down 30-80cm.

Snowpack Summary

In the past 3 days, the top 5-10cm of the snowpack has undergone melt-freeze cycle on all aspects below treeline, and on solar aspects into the alpine. The 40cm of storm snow that fell last week sits on a very faceted (sugary) upper snowpack.

A weak layer of surface hoar, facets and/or suncrust (Jan 30th) is 50-80cm down. Feb 16 is another PWL (facets/crust/surface hoar) down 30-40cms. Both of these layers are reactive to human triggering.

Weather Summary

A cold front will transit the interior on Monday, bringing light precipitation.

Tonight Mainly cloudy. Alpine high -4°C. Light North ridge winds. Freezing level (FZL) 1300m

Mon Mix sun/cloud with flurries. Trace of precipitation. Alp high -5°C. Light S wind. FZL 1500m

Tues Mix of sun/ cloud. Alp high -6. Light S wind. FZL 1500m

Wed Mainly cloudy. 5cm snow. Alp high -7°C. Light SW wind. FZL 1400m

Terrain and Travel Advice

  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Avoid areas with a thin or variable snowpack.
  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.