Avalanche forecast

Jasper

Apr 26 – 27, 2019Parks Canada
View on map
Archived · expired 7 years ago

Avalanche danger

Sun
Mon
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
Open full map

Highlights

Watch for reverse loading as the wind direction switches to the North late Saturday.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2.5

    Expect windslab on most aspects in the alpine.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–3

    Snow on Saturday night could increase the likelihood of triggering.

Weather Forecast

Parker Ridge:

Saturday: Cloudy with sunny periods and isolated flurries. Treeline temperature: High -5 C.

Ridge wind north: 20 km/h gusting to 75 km/h.

Freezing level: 1500 metres.

Sunday : Flurries. Accumulation: 6 cm. Treeline temperature: Low -12 C, High -6 C.

Mostly light ridge wind occasionally gusting to 35 km/h.

Freezing level: 1600 metres.

Snowpack Summary

10cm of snow is forecast for Parker Ridge on Saturday. This new snow will overly several crusts / facet layers in the upper 40cm, and a faceted layer down 70cm on shady aspects. Watch for a switch in wind direction Saturday afternoon to the north. Windslabs can be expected on most aspects in the alpine.

Avalanche Summary

Recent signs of cornice failure and wind slabs in the high alpine.

Confidence

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

Regions covered