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Archived

Avalanche Forecast

Mar 29th, 2022–Mar 30th, 2022
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
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: Northwest Coastal.

Keep an eye on the weather. New snow and wind will likely form storm and wind slabs throughout the day.

Confidence

Moderate - We are confident the likelihood of avalanche will increase with the arrival of the forecast weather.

Weather Forecast

Tuesday night: Stormy with up to 5cm of new snow and moderate to strong south winds. Low of -1 at 900 m.

Wednesday: Stormy with 5 to 10 cm of new snow expected. Moderate southwest winds. Freezing level around 1100 m.

Thursday: cloudy with flurries bringing up to 5 cm of snow with light southerly winds. Freezing level around 1100 m.

Friday: stormy with 10 to 15 cm of new snow expected. Light to moderate southeast winds and freezing levels around 1100 m.

Avalanche Summary

OnMonday two large natural cornice falls were observed in the north of the region. They triggered wind slabs on the slope below. A few natural wind slab avalanches were also observed in this part of the region.

Two large natural icefalls were observed at Bear Pass.

In the Terrace area wet loose avalanches up to size two were observed on all aspects and elevations except high north.

Snowpack Summary

New storm and wind slabs will likely form throughout the day. A crust can be found at or near the surface on all aspects and elevations except high north terrain. Moist snow will likely be observed at lower elevations and could result in wet loose avalanches.

A weak layer of surface hoar from mid March buried 70-120 cm deep can still be found but is considered dormant in the Terrace area. In the far north of the region it continues to produce large avalanches.

Terrain and Travel

  • Watch for fresh storm slabs building throughout the day.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

Avalanche Problems

Storm Slabs

new storm and wind slabs will likely form throughout the day. Size and likelihood of triggering these slabs will be greatest near ridge crests and steep roll overs.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Cornices

Limit exposure to cornices. Cornice falls can trigger large avalanches on the slopes below. The likelihood of natural cornice falls could increase with solar input and warming.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1.5 - 2.5