Avalanche forecast

Jasper

Jan 30 – 31, 2017Parks Canada
View on map
Archived · expired 10 years ago

Avalanche danger

Mon
Tue
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
Open full map

Highlights

Wind and new snow continue to load an already stressed snowpack

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    2–3
    Big open features and climbs with significant overhead hazard should be avoided as the weak bond between layers strengthens.

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Wind loading and shedding from steep faces, especially concerning for ice climbers.

Weather Forecast

Forecasted snow (10 to 15cm) to continue through the evening Sunday. SW winds with strong to extreme ridge top values, tapering off and shifting to northerly though Monday/Tuesday. Increasing pressure, blue skies and arctic temps by mid-week.

Snowpack Summary

New snow being re-distributed by moderate to strong SW winds, loading N to NE aspects on an already stressed facet interface down between 20 to 50cm. Hard windslab over a weak mid-pack, over an even weaker facet and depth hoar base to ground.

Avalanche Summary

Active avalanche cycle through the forecast region. Loading continuing though the night Sunday. Significant activity directly observed from Alpine and TL elevations between (2200m - 2500m) Saturday. No new observations Sunday due to poor visibility.

Confidence

Forecast snowfall amounts are uncertain on Sunday

Regions covered