Parks Canada Deryl Kelly, Parks Canada

Jasper National Park Avalanche Forecast

Jan 15th, 2020 4:00PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Deep Persistent Slabs.

Traces of new snow and a general warming trend leading into the weekend.

Summary

Weather Forecast

The arctic air remain dominate as a series of low pressure systems from the south bring light flurries to our region. A "warming", (aka: warmer than lately) trend is moving into the region as we approach the weekend.

Avalanche Canada's Mountain Weather Forecast product now includes a more specific Alberta Rockies synopsis.

Snowpack Summary

Surface faceting at all elevations. Weakening midpack comprised of mixed forms and facets, bridging basal facets and DH. HS Average at TL: ~150cm.

Avalanche Summary

No new avalanches observed or reported

Confidence

Problems

Deep Persistent Slabs

An icon showing Deep Persistent Slabs

Likelihood

Possible - Unlikely

Expected Size

1 - 3

The strength of the bridging over the basal weakness will determine it's sensitivity to triggers. Deep penetrating cold has weakened shallow areas and may be more susceptible to triggering and propagation.

  • Be aware of thin areas that may propogate to deeper instabilites.
  • Use caution on open slopes and convex rolls

Aspects:

All aspects.

Elevations:

All elevations.

Valid until: Jan 16th, 2020 4:00PM