Avalanche Forecast

Issued: Apr 2nd, 2022 4:00PM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is considerable. Known problems include Storm Slabs and Cornices.

Avalanche Canada dsaly, Avalanche Canada

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Strong winds and fresh snow overnight will quickly form touchy slabs. Choose conservative terrain and avoid overhead hazards.

Summary

Confidence

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

Weather Forecast

Saturday night: Stormy, 10-30 cm snow expected overnight, the highest precipitation amounts are forecast near Kitimat and along the coast, and quickly taper eastward and inland. Strong south wind gusting to extreme. Ridgeline low -4 C overnight.

Sunday: Stormy and unsettled, with a variable 5-10 cm forecast through the day. Strong to extreme winds peaking overnight and decreasing to moderate southwesterlies by the end of the day. Ridgeline high -3 C.

Monday: Cloudy with flurries and sunny breaks, up to 10 cm. Moderate west wind. Ridgeline high 0 C.

Tuesday: Flurries, trace to 5 cm. Moderate westerly wind. Ridgeline high -4 C.

Avalanche Summary

On Thursday, wind slabs to size 1.5 were reactive to skiers, reported on northerly aspects with crown depths 15-40 cm. On Wednesday, explosives in the north of the region triggered storm slabs to size 2.

Earlier in the week natural cornice falls and wet loose avalanches were observed throughout the region.

Snowpack Summary

Strong winds will quickly impact accumulating snowfall. Below the new snow, a crust can be found on all aspects and elevations except high elevation north-facing terrain. In the north of the region, small surface hoar may be found above this crust. With warm, spring storms, expect snowfall accumulations to decrease with elevation and transition to moist snow or rain below tree line.

A weak layer of surface hoar from mid-March buried 70-120 cm deep can still be found but is considered dormant around the Terrace area. However, in the far north of the region, it produced large avalanches as recently as Sunday.

Terrain and Travel

  • Avoid all avalanche terrain during periods of strong wind.
  • Make conservative terrain choices and avoid overhead hazard.
  • Give the new snow time to settle and stabilize before pushing into bigger terrain.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

Problems

Storm Slabs

An icon showing Storm Slabs

Storm slabs will quickly develop overnight as strong winds impact falling snow. Expect to find deeper and more reactive deposits around ridges and lee terrain. With strong winds, slabs may lurk further downslope or in less common locations.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

1.5 - 2.5

Cornices

An icon showing Cornices

Large cornices have become weak with recent mild temperatures. Cornice falls have the potential to trigger large avalanches on the slopes below. 

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1.5 - 2.5

Valid until: Apr 3rd, 2022 4:00PM

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