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Archived

Avalanche Forecast

May 4th, 2014–May 4th, 2015
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
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Kananaskis.

This will mark the end of our regular bulletins. However, if significant weather is forecasted, we will issue new bulletins as needed.

Confidence

Good

Weather Forecast

Flurries will bring more snow over the next 24hrs. Amounts are only expected to be around 6cm due to the rapid settlement. Winds will be light from variable directions. Freezing levels will vary from 1600m to 2100m for the next 3 days. Some sun is expected as the front clears off. Expect very strong solar effect and a rapid rise in air temp when this happens.

Avalanche Summary

One large avalanche was noted today that occurred sometime during the storm. It appeared to be a large size 2, but the start zone was obscured.  NE asp, 2350m, wet slab. When the sun made a brief appearance today there was immediate pin wheeling from steep solar aspects.

Snowpack Summary

The new snow has settled significantly in the past 24hrs. Today alone, we witnessed 20cm of storm snow settle to 15cm's within an hour. At all elevations the entire snowpack is moist. Below 2000m, the afternoon heat is turning the snowpack isothermal. In the alpine, the storm slabs are found in immediate lee areas and are  well bonded to underlying surfaces. No wind effect at treeline or below.

Avalanche Problems

Deep Persistent Slabs

The sensitivity of this layer is directly related to heat. Solar radiation and high air temps will cause a very quick  breakdown of the snowpack. Watch the freeze quality from the night before and monitor temps as the day goes on.
Make your travel plans to take advantage of overnight freezing.>Be aware of the potential for large, deep avalanches.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 3 - 6