Avalanche forecast

Jasper

Apr 30 – May 1, 2014Parks Canada
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Archived · expired 12 years ago

Avalanche danger

Fri
Sat
Alpine
4 · High
Treeline
4 · High
Below
4 · High
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Highlights

A spring avalanche cycle continues on Thursday as warm conditions destabilizes the snowpack.  Stay out of avalanche terrain until conditions improve.  The Maligne Road is closed until Friday Morning.

Avalanche problems

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Warm temperatures will weaken the large cornices that are out there.  Cornices will likely begin to fall Thursday afternoon.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    1–3
    Loose wet avalanches can be expected on sunny south facing aspects as temperatures rise during the day.

  • Wet Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    2–3
    Wet slab avalanches are expected to continue on Thursday.

Weather Forecast

Warm temperatures continue overnight with the freezing level around 2200 m.  Another warm day on Thursday, clouding over by late afternoon with a good chance of rain showers Thursday evening.  A cooling trend begins on Friday along with periods of snow with alpine accumulations of up to 10 cm.  Snowy cool conditions continue through the weekend.

Snowpack Summary

Freezing level to 3500 m with little overnight recovery of the melt freeze crust.  A widespread natural avalanche cycle will continue through Thursday.  Full depth avalanches are occurring on steep southerly aspects.

Avalanche Summary

A significant avalanche cycle is occurring at all elevations.  Most observations have been on southerly aspects but expect to see all aspects begin to perform on Thursday as freezing levels are to remain high and similar warm and sunny conditions are expected.

Confidence

Timing or intensity of solar radiation is uncertain on Thursday

Regions covered