Avalanche Forecast

Issued: Apr 16th, 2012 4:02PM

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

a.l. horton, Parks Canada

Jasper.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

on Tuesday

Problems

Wind Slabs

No recent slab avalanche activity has been observed. Slabs are primarily present on NE slopes. Steeper slopes should be avoided.

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

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 3

Loose Wet

Warmer overnight temperatures are forecast along with 5 - 10 cm on snow. This new snow will insulate our warm snowpack preserving isothermal conditions. Cloudy skies are also forecast which should limit activity on this weakness.

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

Elevations: Alpine.

Likelihood

Possible - Likely

Expected Size

1 - 2

Deep Persistent Slabs

This layer is now buried by a settled upper snowpack. Triggering of this layer is still possible especially from a thin spot.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 4

Valid until: Apr 17th, 2012 4:00PM