Avalanche forecast

Jasper

Jan 22 – 23, 2019Parks Canada
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Archived · expired 8 years ago

Avalanche danger

Wed
Thu
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Good skiing can be found in sheltered areas treeline and below.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–2.5
    Moderate winds over the weekend have created isolated new windslab over a mix of surface conditions (facets, surface hoar, crust).

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–3
    Use caution in shallow uneven snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.

Weather Forecast

Expecting a steady pattern in the weather for the next two days; cloudy with some sunny periods. Little precipitation and temperatures between -10C to -3C. Light west to SW winds, with moderate gusts from the SW.  Starting Wednesday 13mm of precip forecasted with moderate wind.A detailed mountain weather forecast is available from Avalanche Canada.

Snowpack Summary

New wind slab in the alpine can be expected at ridge tops and immediate lees. 10cm of new, low density snow overlies a mix of old surfaces (facets and/or surface hoar and sun crust). This, over a generally strong mid-pack sitting on the deep persistent weaknesses of facets and depth-hoar.  Thin sun crust on steep due south.

Avalanche Summary

No new avalanches reported. Areas of concern are where overhead cornices threaten unevenly distributed snowpack areas. (where deep basal weakness may exist). Be a part of the Avalanche Forecasting team by reporting your field trip this weekend on Avalanche Canada's Mountain Information Network.

Confidence

Timing of incoming weather systems is uncertain on Wednesday

Regions covered