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Archived

Avalanche Forecast

Apr 1st, 2021–Apr 4th, 2021
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Waterton Lakes.

Start and finish your outing early as warm temperatures and solar radiation will increase the hazard throughout the day. 

Weather Forecast

Friday: Sunny with moderate SW gusting 85km/h. Freezing level 2100m.

Saturday: Sunny with cloudy periods. Moderate SW wind gusting 70km/h. Freezing level 2100m.

Sunday: Scattered showers with snow above 1900m. 8-15mm.

Snowpack Summary

Moist surface snow on solar aspects will create a crust that deteriorates through the day. Previous SW wind formed wind slabs up to 30cm deep in the alpine & exposed slopes at tree line. These wind slabs sit over a variety of old surfaces including a thick crust that exists to ridgetop except on high N aspects. Mid snowpack is well consolidated.

Avalanche Summary

Size one loose wet avalanches observed on solar aspects. Please consider submitting a MIN report if you see an avalanches.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Sunday

Avalanche Problems

Loose Wet

Pay attention to the air temperature and surface snow condition as conditions deteriorate through the day.

  • Minimize exposure when the solar radiation is strong, especially if snow is moist or wet.

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

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 1.5

Wind Slabs

Pockets of windslab will become most reactive during peak warming.

  • Watch for stiffer feeling snow. Avoid areas that appear wind loaded.
  • Use caution in lee areas in the alpine and treeline. Recent storm snow has formed wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2