Avalanche forecast

Jasper

Apr 13 – 14, 2019Parks Canada
View on map
Archived · expired 7 years ago

Avalanche danger

Mon
Tue
Alpine
2 · Moderate
Treeline
1 · Low
Below
1 · Low
Open full map

Highlights

If you go exploring watch out for localized convective snowfalls.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Fresh snow and moderate winds could create windslabs in the alpine

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1.5–2.5
    Evidence from recent snowpack tests and whumphing would suggest that a weak layer of facets persists down 20-50cm in some areas, and may be becoming reactive with incremental loading from recent small snowfalls.

Avalanche Summary

Signs of cornice failures up to size 2 have been reported and a large serac triggered avalanche was witnessed off the south side of Mt. Kitchner on Thursday. Large whumpfs on the ridge of Mt. Wilcox were also reported on Thursday.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

5cm of snow is forecast at the Parker Ridge area overnight Saturday into Sunday. Treeline will be windy with 20-45 km/h westerlys. Freezing level will be around 1700m with a high of -5C. Expect the same closer to Jasper except with less snow. Note that forecast snow amounts have been inaccurate over the past week

Snowpack Summary

Forecast winds and snow could create windslabs in the alpine. A supportive crust exists to 2,100m on all aspects and extends into the alpine on solar slopes. A winter snowpack remains on N aspects above treeline. At upper elevations a weak faceted layer down 20-50cm remains a concern. The snowpack sits on a weak base of facets and depth hoar.

Regions covered