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Archived

Avalanche Forecast

Apr 7th, 2022–Apr 10th, 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
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: Waterton Lakes.

Freezing levels remain high Thursday night into Friday. Keep big objectives for cooler day ahead.

A cold front coming in Friday afternoon will improve avalanche hazard for the weekend. Expect to travel through a variety of snow surfaces.

Weather Forecast

Tonight: Cloudy with clear periods. Moderate SW winds. Freezing levels 3000m.

Fri: Mix of sun and cloud with isolated wet flurries. Alpine high +5. Mod gusting extreme SW winds. FL 3400m.

Sat: Cloudy with flurries, 7 cm. Alpine high -5. Light to mod gusting strong W winds. FL 1400m.

Sun: Flurries, 8 cm. Alpine high of -5. Light W winds. FL 3000m.

Snowpack Summary

Up to 19 cm of storm snow is settling and becoming moist with high freezing levels Thursday. SW winds formed 15-30 cm windslabs in alpine lees. New snow buried refrozen surfaces on all aspects well into ALP. A series of crusts and windslab make up the midpack. Lower snowpack is well settled 1F to P. HS 250-300 cm near the continental divide.

Avalanche Summary

Avalanche activity increasing each afternoon with day time heating. Numerous size 1 wet loose avalanches reported in last two days. Please report any observations to the Mountain Information Network.

Confidence

Forecast snowfall amounts are uncertain

Avalanche Problems

Loose Wet

With overnight freezing levels remaining high through thursday night we don't expect the snow pack to get a good refreeze overnight. This problem will improve through the weekend as temps cool off.

  • Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
  • Daytime warming/rain will weaken surface layers.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2

Cornices

Thursdays and Fridays warm temps well into the alpine is weakening cornices making them more likely to fail.

  • Pay attention to overhead hazards like cornices which could trigger slabs.
  • Cornices become weak with daytime heating, so travel early on exposed slopes.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2.5