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Archived

Avalanche Forecast

Mar 11th, 2022–Mar 12th, 2022
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
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
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: South Coast.

Avalanche danger will increase as new snow and wind form fresh slabs that may slide easily on a slippery crust.

Confidence

Moderate - Forecast snowfall amounts are uncertain.

Weather Forecast

Friday night: Cloudy with snowfall, accumulation 10-15 cm, 30-40 km/h southwest wind, treeline temperature -3 C, freezing level 500 m.

Saturday: Cloudy with snowfall, accumulation 5-10 cm, 30-40 km/h southwest wind, treeline temperature -1 C. Freezing level 1300 m.

Sunday: Overnight snowfall around 5 cm then cloudy with sunny periods, 10-20 km/h southwest wind, alpine temperature -1 C. Freezing level 1300 m.

Monday: Cloudy with snowfall, accumulation 40-60 cm, 60 km/h southwest wind, treeline temperature -1 C. Freezing level 1500 m.

Avalanche Summary

No recent avalanches were reported. Avalanche activity will increase in the coming days as new slabs form. The snow may remain quite reactive if it doesn't bond well to the melt-freeze crust.

Snowpack Summary

New snow falls with strong southwest wind. Storm totals of 15-25 cm are expected by Saturday evening in most areas. The snow falls on a hard melt-freeze crust on all aspects up to 1500 m and to the mountain tops on sun-exposed slopes. The snow falls on variable wind-affected snow on northerly aspects above 1500 m.

A few other melt-freeze crusts are found in the top 100 cm of the snowpack but appear to be progressively bonding.

The remainder of the snowpack is well-bonded.

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Watch for avalanche hazard to increase throughout the day.
  • Large cornice falls are dangerous on their own.

Avalanche Problems

Storm Slabs

New snow and strong southwest wind are building fresh storm slabs. These slabs could be touchy, particularly in wind loaded features and where the new snow sits on a hard and smooth melt-freeze crust.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2