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Avalanche Forecast

Apr 12th, 2023–Apr 13th, 2023
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
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: East Island, North Island, South Island, Vancouver Island, West Island.

Lingering wind slabs may remain reactive to human triggers on lee aspects at treeline and above.

Watch for recently formed and reactive wind slabs as you transition into wind affected terrain.

Confidence

Moderate

Avalanche Summary

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

Observations are limited at this time of year, please consider sharing any information or photos you have on the Mountain Information Network to help guide our forecasts.

Snowpack Summary

A melt-freeze crust likely exists on all aspects below 1400 m. Above 1400 m, dry snow has likely been redistributed into deeper deposits on north-facing terrain features by strong southerly winds.

The middle and lower snowpack are strong and well-bonded.

At lower elevations, the snowpack was recently rain soaked.

Weather Summary

Wednesday night

Mostly cloudy / 10 km/h southwest ridgetop wind / Temperature at treeline around -3 C / Freezing level 700 m

Thursday

Cloudy with isolated flurries; 3-10 cm / 10 km/h southwest ridgetop wind / Temperature at treeline around 0 C / Freezing level 1000 m

Friday

Mix of sun and cloud / 30 km/h south ridgetop wind / Temperature at treeline around 2 C / Freezing level 1300 m

Saturday

Snow(rain below 1000m); 10-20 cm / 50 km/h south ridgetop wind / Temperature at treeline around 2 C / Freezing level 1300 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.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Avalanche Problems

Wind Slabs

Lingering wind slabs may remain reactive to human triggers on lee aspects at treeline and above.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5