Avalanche Forecast

Issued: Apr 5th, 2024 4:00PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Storm Slabs.

Avalanche Canada mbender, Avalanche Canada

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Wind slabs at upper elevations are the main concern.

Summary

Confidence

High

Avalanche Summary

On Wednesday and Thursday a few human-triggered storm and wind slab avalanche size 1 to 1.5 were reported in the northern most part of the region. They occurred at treeline and in the alpine. Some of these were triggered remotely (from a distance).

Snowpack Summary

Approximately 40 cm of snow from earlier in the week has buried a widespread crust in all but sheltered, north-facing slopes where isolated pockets of surface hoar and/or faceted grains may exist below the new snow.

Previously problematic layers deeper in the snowpack appear to have bonded and strengthened, however, there is a low likelihood that they could remain a risk in steep, north-facing, high alpine terrain.

Weather Summary

Friday Night

Mainly cloudy. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 700 m.

Saturday

Mostly cloudy with 2 to 5 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1000 m.

Sunday

Mostly cloudy with 5 to 10 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1100 m.

Monday

Mostly cloudy with 10 to 15 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make observations and assess conditions continually as you travel.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Avoid areas where the snow feels stiff and/or slabby.
  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet

Problems

Storm Slabs

An icon showing Storm Slabs

New snow from earlier in the week is being redistributed into exposed lee terrain.

Aspects: North, North East, East, North West.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 2

Valid until: Apr 6th, 2024 4:00PM