Avalanche Forecast

Archived

Nov 8th, 2021–Nov 9th, 2021

Alpine

Below Threshold.

Treeline

Below Threshold.

Below Treeline

Below Threshold.

Alpine

Below Threshold.

Treeline

Below Threshold.

Below Treeline

Below Threshold.

Alpine

Below Threshold.

Treeline

Below Threshold.

Below Treeline

Below Threshold.

Regions

Glacier.

Hello winter, welcome back!

Public Avalanche Bulletins will begin Nov 12 for Glacier National Park, published daily at 4pm.

Weather Forecast

For the next couple of days, expect flurries and mixed weather with fluctuating freezing levels rising to 1600m and dropping to valley floor. A brief respite Wed/Thurs will see clearing before another system arrives Friday.

Snowpack Summary

A widespread rain crust that extends high into the alpine is buried by approx 30-50cm of snow, even deeper in alpine lee features. The new snow has formed surface slabs in wind-affected areas. At all elevations, many rocks, trees, and hidden objects are poking out of the shallow snowpack. Ski/ride conservatively at this time of year!

Avalanche Summary

A group remotely triggered a sz 1.5 surface slab, likely sliding on the rain crust, on the entrance into Cheops N6 (Nikki's Notch) on Nov 7.

Several natural avalanches to sz 2.5 were noted in the Macdonald gullies over the last 48hrs.

Confidence

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.