Avalanche Forecast

Issued: Nov 30th, 2017 4:00PM

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

deryl kelly, Parks Canada

Jasper.

Excellent riding can be found in sheltered treeline locations. Sensitive windslabs still plague the alpine, but loading is occurring at all elevations. Keep your head up.

Summary

Weather Forecast

Friday Accumulation: 8 cm.Alpine temperature: High -8 °C.Ridge wind southwest: 15 km/h gusting to 45 km/h.Freezing level at valley bottom.Thur-Sun 11mmSaturday minimal snow winds shifting to the north and light as the cold arctic air envelops the area on sunday

Snowpack Summary

Wind slabs continue to build in exposed lee features. A significant crust (black friday, Nov.23) can be found down 30 to 70cms. A persistent slab overlays this crust and so far the bond appears to be strengthening at this interface. The Halloween crust sits well down in the snowpack at TL locations and as high as 2700m.

Avalanche Summary

No new avalanches observed or reported

Confidence

Problems

Wind Slabs

Sensitive wind slabs continue building at ridge tops and if triggered, has the potential to step down to the deeper instability.

Avoid freshly wind loaded features.Avoid exposure to overhead avalanche terrain during periods of moderate to intense transport.

Aspects: North, North East, East, South East.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 3

Valid until: Dec 1st, 2017 4:00PM