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Archived

Avalanche Forecast

Jan 2nd, 2023–Jan 3rd, 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
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

Regions: East Island, North Island, South Island, Vancouver Island, West Island.

Use caution around wind-loaded areas at upper elevations, where wind slabs have formed over a crust.

Though natural avalanche activity has tapered off human triggering remains possible.

Confidence

Moderate

Avalanche Summary

No new avalanches were reported throughout the weekend. On Friday a size 1.5 skier remote storm slab avalanche was reported. This slab was 25 cm deep and released on a steep northeast slope at 1400m. Several other avalanches like this one were reported to have occurred on Friday. triggers included ski cuts and naturals. Check out this MIN from Mt Washington.

Continue to support your backcountry community and please consider submitting a MIN report.

Snowpack Summary

30 to 40cm of recent storm snow is settling over a melt-freeze crust above 1000 m. A thin layer of facets could exist around this interface. Strong southerly winds have redistributed available snow into deep wind slabs on north and east aspects and cross-loading on others. Below 1000m the snow surface could still be moist.

Terrain below treeline has limited or no coverage.

Weather Summary

Monday Night

Mainly cloudy with isolated flurries, 1-5 mm accumulation. Ridgetop winds southerly 20 gusting 30 km/h. A low of -3 at 1100m. Freezing levels 1000m.

Tuesday

Cloudy with isolated flurries, 2-7 mm accumulation. Ridgetop winds southerly 20 gusting to 30 km/h. A high of -1 at 1100m. Freezing levels drop to 700 m.

Wednesday

Mainly cloudy with light flurries, trace accumulation. Ridgetop winds southerly 30-50 km/h. A high of +1 at 1100m. Freezing levels rise to 1500m.

Thursday

Cloudy with flurries, 5-10 mm accumulation. Ridgetop winds southerly 30-50 km/h. A high of 0 at 1100m. Freezing levels 1500m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Wind slabs may be poorly bonded to the underlying crust.
  • Be especially cautious as you transition into wind affected terrain.
  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • Use ridges or ribs to avoid areas of wind loaded snow.

Avalanche Problems

Wind Slabs

Moderate southerly winds have redistributed 20 - 40 cm of available snow into deep pockets in lees. Wind slabs overlie a crust and may be reactive to human triggering.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2