Avalanche forecast

Jasper

Mar 17 – 18, 2019Parks Canada
View on map
Archived · expired 8 years ago

Avalanche danger

Tue
Wed
Alpine
3 · Considerable
Treeline
4 · High
Below
4 · High
Open full map

Highlights

Highway 93N and Maligne road will be closed for Avalanche Control until Tuesday. Check Alberta 511 for details and updates.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2.5
    Fresh wind slabs sit on a variety of old surfaces. Winds continue to gust at light to moderate values from the SW.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    1–2
    Watch out for any sunny, steep features. Expecting some recovery to the surface freeze, overnight Sunday. Progressively rising hazard over the day.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Potential for triggering will increase significantly over the week as the temperatures seep into the snowpack. If triggered, it's expected to be very large, running full path.

Weather Forecast

Sunny with cloudy periods. Alpine temperature: Overnight Sunday, Low: -4, High 4C.Ridge wind light with some gusts.Freezing levels will rise as high as 2200 metres; up to 2800 metres on Monday, and forecasted to over 3000m from Tuesday, through the rest of the week.

Snowpack Summary

Moist surface snow treeline and below and the alpine is heavily wind effected. Deep snowpack areas are relatively strong through most of the region. Shallow areas are weak, and will morph quickly to moist 'spring like' slab conditions from the surface down. With the persistent basal weakness, this could fail with the full depth of the snowpack.

Avalanche Summary

Numerous loose wet avalanches on solar aspects at all elevations. These will continue to entrain the surrounding snow and could potentially get very large.

Confidence

Regions covered