Avalanche forecast

Jasper

Feb 15 – 16, 2019Parks Canada
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Archived · expired 8 years ago

Avalanche danger

Sat
Sun
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate
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Highlights

Remember, moderate means human triggered avalanches possible. Heightened avalanche conditions exist on specific terrain thus evaluate snow and terrain carefully.

Avalanche problems

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–2.5
    Somewhat of a warm up over the next few days from the previous frigid temperatures could generate some cornice failures

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–3.5
    This problem could be triggered from shallow snowpack areas.

Weather Forecast

Friday will be flurries, 6cm of snow, high of -7, and light ridge winds. Saturday will be clouds, sun, and flurries, trace amounts of snow, lows of -25 and highs of -11 with light East winds. A detailed mountain weather forecast is available from Avalanche Canada.

Snowpack Summary

Some wind affect noted in the alpine and at tree line. Due to the recent cold temperatures there seems to be no slab over the persistent weakness sitting down 35-45cm (surface hoar, crusts, and/or facets). The bottom of the snowpack is structurally weak especially in shallow snowpack areas, consisting primarily of facets and depth hoar.

Avalanche Summary

No new avalanches on Thursday with good visibility. On Wednesday, one notable windslab in the alpine stepping down to ground. Loose dry avalanches up to size 2 have been naturally triggered in the facetting snowpack in steep shallow areas.

Confidence

Forecast snowfall amounts are uncertain on Friday

Regions covered