Avalanche Forecast

Issued: May 1st, 2014 4:15PM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is considerable. Known problems include Wet Slabs and Loose Wet.

a.l. horton, Parks Canada

Jasper.

Rain will change to snow Friday AM with 20 cm possible through the day. Dangerous avalanche conditions will continue until cold temperatures stabilize the snowpack.

Summary

Weather Forecast

Temperatures will remain warm overnight with up to 10mm of rain.Â Easterly winds begin Friday am and temperatures will fall.Â Rain will change to snow with 20 cm possible by Friday night.Â Cool temperatures and snow through the weekend with total storm accumulation of 35 cm possible.

Snowpack Summary

The snowpack is warm at all elevations with isothermal conditions on all but northerly alpine aspects.Â Rain overnight will continue to deteriorate the snowpack at treeline and below.Â Stability will return to the snowpack base as temperatures drop through the weekend however surface storm snow instabilities are likely.

Avalanche Summary

A significant avalanche cycle continues at all elevations, most observations have been on southerly aspects.Â

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Friday

Problems

Wet Slabs

Wet slab avalanches will slow as temperatures cool and rain changes to snow through the day.

Minimize exposure to avalanche terrain during periods of heavy loading from new snow, wind, or rain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1 - 3

Loose Wet

Loose wet avalanches will slow as temperatures cool and rain changes to snow through the day.

Be very cautious with gully features.

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

Elevations: All elevations.

Likelihood

Possible - Likely

Expected Size

1 - 3

Valid until: May 2nd, 2014 4:00PM