Avalanche Forecast

Issued: Nov 23rd, 2018 4:00PM

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

jasper snow safety, Parks Canada

Jasper.

Trace amounts of precip and light winds in the forecast are not enough for a reset of the terrain. Good riding can still be found on sheltered lee locations.

Summary

Weather Forecast

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for the Avalanche Canada mountain weather forecast. No new snow is expected on Saturday.

Snowpack Summary

Forecast area experiencing light to calm winds last couple of days keeping 5cm of new powder snow over previous surfaces. The Oct 25 crust is 2-4cm thick and down 60 to 80cm with facets above and below it. Hard progressive collapse failures have been observed immediately below this crust. Early season hazards lurk just below the surface.

Avalanche Summary

No patrol on Friday and nothing new reported. Nothing new observed or reported on Thursday but visibility was poor.

Confidence

Problems

Deep Persistent Slabs

Assume all skiable slopes have this crust, and assess the strength of the interface before jumping into any committing lines.

Watch for whumpfing, hollow sounds, and shooting cracks.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 2.5

Wind Slabs

Previous winds created created windslabs in lee features yet their development has slowed with current light to calm winds.

If triggered the storm/wind slabs may step down to deeper layers resulting in large avalanches.Use caution in lee areas in the alpine and treeline. Recent storm snow has formed wind slabs.

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

Elevations: Alpine.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Valid until: Nov 24th, 2018 4:00PM