Avalanche Forecast

Issued: Nov 3rd, 2018 4:00PM

The alpine rating is below threshold, the treeline rating is below threshold, and the below treeline rating is below threshold. Known problems include Wind Slabs and Persistent Slabs.

deryl kelly, Parks Canada

Jasper.

Summary

Weather Forecast

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Snowpack Summary

Seasonal height of snow (HS) 77cm, with previous and new storm snow (HST) totaling about 40cm over a late Oct. (Oct 24) crust. Weak faceted crystals to ground. For more information on early season conditions visit avalanche.ca.

Avalanche Summary

Saturday, Nov. 3rd, technicians traveled at TL and into the lower alpine on Parkers Ridge. They found a weak, unsettled snowpack. Whumphing was noted at TL in open tress, on NE aspects. Pockets of windslab, Up to 20cm deep was observed in the alpine with moderate loading expected to continue into the week.

Confidence

Problems

Wind Slabs

Loaded gully features and a stiffening snowpack over waterfall and glacier ice are common traps for early season Ice Climbers. Consider an alternative route if overhead loading is possible.

Be careful with wind loaded pockets while approaching and climbing ice routes.Ski penetrations may be to ground in some areas due to weak and unconsolidated snowpack.

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Persistent Slabs

Noted sensitivity to skier travel at TL elevations.

Whumpfing is direct evidence of a buried instability.Ski penetrations may be to ground in some areas due to weak and unconsolidated snowpack.

Aspects: North, North East, East, North West.

Elevations: Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 2

Valid until: Nov 4th, 2018 3:00PM