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Avalanche Forecast

Mar 28th, 2022–Mar 29th, 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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

The snowpack is in a complicated transition at this moment. In many places at TL and below a saturated snowpack is now insulated under a warm blanket of new snow. Coming cold overnight temps will improve travel and reduce the present hazard.

Weather Forecast

Overnight: Cloudy with clear periods. Alpine temperature: Low -8 °C. Winds light, 15 km/h. FZL valley Bottom

Tuesday: A mix of sun and cloud. Alpine temperature: High -1 °C. Wind light ,15 km/h. FZL: 2200 m

Wednesday: Cloudy with sunny periods and isolated flurries. Trace. Low -9 °C, High -4 °C. Mostly light winds. FZL: 1700m

Snowpack Summary

Up to 25cm of new snow above 2000 m with minimal wind effect overlies sun crust at all elevations and a melt-freeze crust up to 2100m on all aspects. Snow pack below 1700m is mostly isothermal and unsupportive due to steady warm temperatures and rain.

Avalanche Summary

Natural slab/loose wet avalanche cycle occurring in the region, especially BTL. Control work producing predictable loose wet and loose slabs from low elevation targets. Few observations due to very poor visibility.

Confidence

Avalanche Problems

Loose Wet

Warm precipitation and cloud coverage will prevent a strong overnight freeze. Make sure to investigate the strength of surface crust in the late hours of the day.

  • Daytime warming will weaken surface layers.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Wet Slabs

Melting and free water in the snowpack is waking up old interfaces. Even small features can produce extremely destructive and dangerous wet slabs.

  • Daytime warming will weaken surface layers.

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

Elevations: Treeline, Below Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Storm Slabs

New snow at tree line and lower alpine can be developing as a storm slab with warmer temperatures and minimal wind. Check how well the new snow is bonding to the old surfaces such as crusts.

  • Watch for signs of instability such as whumphing and cracking.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2