Archived

Avalanche Forecast

Apr 8th, 2012–Apr 9th, 2012

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

3: Considerable

The avalanche danger rating below treeline will be considerable

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: Jasper.

Depending on the degree of overnight freeze, consider a.m. to be reduced hazard and increasing with daytime heating especially with sun. Cornice failures and one size 3 was noted today. Freezing level may spike to 3000m or higher on Tuesday.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain on Monday

Avalanche Problems

Loose Wet

When the sun comes out expect a higher probability of naturally occurring moist avalanches in and around steep gullies, rocks, and alpine bowls. Recent activity of this nature has initiated deeper instabilities ie. windslabs / deep slabs.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 3

Wind Slabs

Slabs are present on exposed slopes and steep gully sidewalls. A significant wind slab release was noted Friday off Mt Kitcheners ridge facing the Icefields center. It was 50cm deep, 38 degrees or less in places, and ran a fair distance.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3

Deep Persistent Slabs

These deeper layers can wake up unexpectedly. A size 3 was triggered last Sunday at the Icefields from a shallow spot. Investigate for this weakness before committing. Profile Saturday found Feb14 surface hoar buried 80cm, unreactive yet present.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 4