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 12th, 2024–Apr 13th, 2024

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

Regions

North Rockies, McGregor, Pine Pass, Tumbler.

Up to 30 cm of recent snow and southwest wind may form wind slabs on lee features below alpine ridgetops.

Stay alert to conditions that change with aspect and elevation.

Confidence

Low

Avalanche Summary

No new avalanches were reported in this region on Thursday. However, field observations are currently very limited.

If you are getting out into the backcountry, let us know what you are seeing by making a post on the MIN (Mountain Information Network).

Snowpack Summary

Up to 30 cm of recent snow can be found at upper elevations and is settling rapidly with intense solar radiation and warm temperatures. Southwest wind may form wind slabs on lee features in the alpine.

The recent snow sits above a crust in most areas. The exception is on northerly aspects at upper elevations where it overlies dry snow.

Expect difficult travel at lower elevations with thin snow coverage.

Weather Summary

Friday Night

Partly cloudy. 30 to 40 km/h west ridgetop wind. Treeline temperature -6 °C. Freezing level 900 m.

Saturday

Mostly sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1700 m.

Sunday

Mostly sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1800 m.

Sunday

Mix of sun and cloud. 20 to 30 km/h west ridgetop wind. Treeline temperature -6 °C. Freezing level 1200 m.

Check out the Mountain Weather Forecast for additional weather information.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be alert to conditions that change with aspect and elevation.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.

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.