Avalanche forecast

Jasper

Apr 20 – 21, 2022
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Archived · expired 4 years ago

Avalanche danger

Fri
Sat
Alpine
2 · Moderate
Treeline
1 · Low
Below
1 · Low

Highlights

Ski quality is pretty good and there has been less wind slab development then previously forecast.

Most areas in the alpine are stable but the definition of Moderate fits with pockets of wind slab still possible in specific terrain features up high.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–1.5

    Less Winds slab development then anticipated but isolated pockets may still exist near ridge top in the alpine. Wind slabs are expected to settle out quickly but be on the look out for stiffer feeling or increased loading.

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–1.5

    This problem is specific to steep, unsupported terrain. Size of dry loose avalanches is expected to be small but it may be enough to knock you off your feet as new snow sits over a firm bed surface in most locations.

Weather Forecast

Parkers Ridge area:

Thursday- Cloudy with sunny periods & isolated flurries. Trace precipitation. West wind 10km/h. Freezing level 2100m

Friday- Cloudy with sunny periods & isolated flurries. Trace precipitation. Light-20 km/h Wind. Freezing level 2200m

Sat- Flurries. 3-6cm precipitation. Freezing level 2300m.

Additional info @ Avalanche Canada MWF

Snowpack Summary

5-15cm of recent storm snow sits over previously wind effected surface or sun/temperature crusts. Less winds slab development then anticipated with most areas having no visual wind effect. Isolated pockets of wind slab possible near ridge top. A variety of crusts are present in upper snowpack at all elevations but mid snowpack is well consolidated

Avalanche Summary

Sz 1 loose dry avalanche activity observed on the Icefields Parkway today from steep unsupported terrain with limited visibility. Medicine Slabs on Maligne Lake Road had one Size 1.5 natural wind slab avalanche 20cm deep and a few loose dry avalanches.  Please consider submitting a MIN report if you observe any new activity.

Confidence

Regions covered