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

Apr 13th, 2022–Apr 14th, 2022

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.

Skiers and Riders continue to trigger wind slabs and Cornices in the Alpine! Click here to access the Mountain Information Network for more details.

Weather Forecast

Cold clear air from the North continues to dominate the weather over Rogers Pass. On Thursday expect an Alpine high of -9, light winds from the E, and no precipitation. No real changes on Friday, and we might see a trace of new snow on Sat. No major changes in the short term. Long term we are expecting a gradual warming trend with flurries.

Snowpack Summary

Widespread wind effect in the Alpine and upper treeline has left behind wind slabs on specific terrain features, and scoured the new snow away in others; however, there are still reports of decent conditions in the Alpine in sheltered zones. At Treeline and below the spring snowpack currently has a solid supportive melt-freeze crust.

Avalanche Summary

No new avalanches in the HWY corridor. A close call occurred on Monday, where a small pocket of wind slab nearly took a skier into a crevasse! Click the link here for the full report. On Tuesday several human-triggered size 1 wind slabs occurred on the Ravens. And on Wednesday skiers did some cornice control and triggered a size 3 off of Mt Bonney!

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.

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.