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

Jan 9th, 2020–Jan 10th, 2020

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

Regions

Glacier.

Large loads have lambasted the lands, and the slopes are adjusting to this new stress. Choosing supported, moderately-angled runs with little overhead hazard would be wise today.

Keep tabs on your partner in the trees. Tree-wells are hungry!

Weather Forecast

A slight break in the weather for the next 24 hrs before a smaller disturbance rolls through the region.

Today: Isolated flurries, trace amounts. Alpine high of -16*C. Moderate S'ly winds.

Tonight: Flurries, trace amounts. Alpine low of -17*C. Moderate SW'ly winds.

Tomorrow: Flurries, 10cm of snow. Alpine high of -11*C. Moderate SW'ly winds

Snowpack Summary

1.5m of new snow this week has altered the snowpack. Several weaknesses in the new snow can be found in the metre+ that lays above the persistent Dec 27th layer. Moderate to strong SW winds are redistributing the snow, creating slabs in alpine and tree-line lee features. Deep, loose snow in sheltered locations is available for power-sluffing.

Avalanche Summary

The snowpack is still adjusting to the new load. The natural avalanche cycle has slowed down in most parts of the Rogers Pass region, but notable natural avalanches from Macdonald, Tupper, and Cheops to sz 3 are still running with the wind-loading overnight. Artillery results from yesterday saw many dozens of slides reach the valley floor.

Confidence

Due to the number of field observations

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.