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Avalanche Forecast

Archived

Apr 13th, 2024–Apr 14th, 2024

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

North Rockies, McGregor, Pine Pass, Tumbler.

Lingering wind slabs may still be reactive on lee features below alpine ridgetops.

Avoid steep, rocky, and wind affected areas where triggering slabs is more likely.

Confidence

Moderate

Avalanche Summary

No new avalanches were reported in this region on Friday. 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

Strong solar radiation has created moist snow on sunny aspects at all elevations.

Up to 25 cm snow sits on a crust everywhere except north facing aspects at upper elevations where the snow remained dry.

Lingering wind slabs may still be reactive on lee features below alpine ridgetops.

A series of crusts exist in the upper snowpack.

Expect difficult travel at lower elevations with thin snow coverage.

Weather Summary

Saturday Night

Clear skies. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level valley bottom.

Sunday

Mostly sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1700 m.

Monday

Mix of sun and cloud. 20 to 30 km/h west ridgetop wind. Treeline temperature -4 °C. Freezing level 1400 m.

Tuesday

Mostly cloudy with isolated flurries, 0 to 3 cm snow. 30 to 40 km/h northeast 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

  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • Be alert to conditions that change with aspect and elevation.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

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.