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Archived

Avalanche Forecast

Apr 2nd, 2024–Apr 3rd, 2024
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
2: Moderate
The avalanche danger rating in the alpine will be moderate
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
2: Moderate
The avalanche danger rating in the alpine will be moderate
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: Coquihalla, Harrison-Fraser, Manning, Sasquatch, Skagit, Stave.

Fresh, reactive wind slabs will likely form at upper elevations with strong winds.

As rain will be turning into snow, total snowfall amounts are uncertain.

Confidence

Moderate

Avalanche Summary

Evidence of a natural avalanche cycle from the past weekend may still be visible. The likelihood of avalanches will increase with ongoing strong winds and rain turning into snow on Tuesday night.

Snowpack Summary

New snow will accumulate over moist snow at lower elevations or a crust on all aspects, except north-facing alpine slopes where dry snow can still be found. The mid and lower snowpack are generally well-bonded.

Weather Summary

Tuesday Night

Cloudy with 10 to 20 cm of new snow expected. Ridgetop winds southwest, 40 to 60 km/h. Treeline temperature -5 °C. Freezing level dropping to 800 m.

Wednesday

Cloudy with sunny periods and isolated convective flurries. Ridgetop winds southwest, 20 to 40 km/h. Treeline temperature -1 °C. Freezing level rising to 1200 m.

Thursday

Cloudy with sunny periods. Ridgetop winds northeast, 20 to 30 km/h. Treeline temperature rising to 0 °C. Freezing level rising to 1500 m.

Friday

A mix of sun and cloud. Ridgetop winds northeast, 20 to 30 km/h. Treeline temperature rising to +2 °C. Freezing level rising to 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Recent new snow may be hiding windslabs that were easily visible before the snow fell.
  • Closely monitor how the new snow is bonding to the old surface.

Avalanche Problems

Wind Slabs

Fresh, reactive wind slabs are expected on northerly aspects at upper elevations, with new snow and strong southwest winds. Be cautious around ridge crests and in steep terrain, where human triggering is most likely.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5