Avalanche forecast

Jasper

Feb 24 – 25, 2017Parks Canada
View on map
Archived · expired 10 years ago

Avalanche danger

Fri
Sat
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
Open full map

Highlights

Whumphs notes in our region. and remote skier triggering of avalanches continue amongst our nearest neighbors. The weak base will persist for sometime. Cautious decisions are key as initiating an avalanche  would be severe consequences.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    Previous 25cm snow and moderate SW winds have added to the windslab problem in the alpine and open tree-line features.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity and remote triggering of this weakness resulted in avalanches up to size 3 failing on the weak faceted snowpack. Caution is recommended.

Weather Forecast

Light snow now to Sunday. Friday will be light N winds and cold -20 temperatures. Saturday will be light Westerly and shifting Northerly Sunday. 

Snowpack Summary

Windslabs exist at TL and ALP. Winds now shifting light Northerly. A rain crust is below 1900m. A dense upper snowpack overlies a weak faceted base making for unpredictable dangerous avalanche conditions. Feb 10 SH layer may be 40cm deep yet its reactivity remains dormant.

Avalanche Summary

Skiers report whumphs in Whistler creek drainage on Thursday. On Feb 17 several size 2-3 avalanches were triggered by skiers from a significant distance away in the McCarib Pass area. Not much has changed in terms of the snowpack characteristics. 

Confidence

The weather pattern is stable

Regions covered