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Archived

Avalanche Forecast

Apr 7th, 2025–Apr 8th, 2025
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Bonnington, Grohman, Kokanee, Kootenay Boundary, Kootenay Pass, Norns, Rossland, Ymir.

Storm slabs will continue to build over the day.

Step back into conservative terrain in areas that have seen more than 30 cm of new snow.

Confidence

Moderate

Avalanche Summary

Over the weekend, small wet loose avalanches were reported to size 1.

Looking forward, we expect small avalanches to continue to be possible in rain saturated terrain, but likely at elevations that receive new snow.

Snowpack Summary

Snowfall totals may reach 30 cm in higher terrain, sitting over a crust or moist snow. Surface snow at lower elevations is expected to remain wet.

The upper snowpack is wet with several softening crusts. Several weak layers from early March, mid-February, and late January can be found in the mid and lower snowpack.

The remainder of the snowpack is generally well settled.

Weather Summary

Monday Night

Cloudy with 10 to 20 cm of wet snow or rain. Freezing level lowers from 2000 m to 1500 m overnight. 30 to 40 km/h southwest ridgetop wind.

Tuesday

Cloudy with 5 to 15 cm of snow above 1500 m. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level around 1800 m.

Wednesday

Mostly cloudy with flurries. 10 to 20 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level around 2000 m.

Thursday

Clearing skies with 30 to 40 km/h southerly ridgetop winds. Freezing level reaches 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

Avalanche Problems

Storm Slabs

Wet, heavy snow at higher elevations may slide easily on the old snow surfaces. Watch for deeper and more reactive deposits near ridgelines.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Loose Wet

Wet loose avalanches are most likely at treeline and below, where the snowpack will be affected by rain.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood: Possible

Expected Size: 1 - 2