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 27th, 2022–Feb 28th, 2022

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

Regions

Glacier.

Storm slabs will be building for the next few days as the snow keeps falling. Small surface hoar, sun crust and facets have been buried and will be the layer of concern until the snowpack adjusts to the new load.

Weather Forecast

Welcome, to another addition of Thunderdome!... errr, or maybe Snowdome! or Stormdome?!? I don't know, it's snowing!

A series of storm fronts will lather the region for a few days. ~10cm Sunday night, 15-20cm on Monday with 20-35km/hr SW winds. Freezing level of 1600m with an alpine high of -4. ~50cm of accumulated snow by Tuesday evening.

Snowpack Summary

15-20cm of new snow buries a facet layer, small surface hoar (2-4mm) in sheltered areas tree line and below and a crust on steep solar aspects. The Feb 15 surface hoar/sun crust is down 30-70 cm and has not been reactive in tests or skier traffic in the past couple days, but may re-awaken with the new load and warming temps.

Avalanche Summary

The storm slab will be building as we endure a series of storm systems the next few days. Expect natural avalanche activity to increase as the snow keeps falling.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Monday

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.

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.