Avalanche Forecast

Issued: Apr 9th, 2016 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 Loose Wet, Deep Persistent Slabs and Cornices.

deryl kelly, Parks Canada

Jasper.

Summary

Weather Forecast

A typical diurnal pattern is expected for the rest of the season with variable and increasingly higher freezing levels occurring daily. Forecasted Spring storms are expected and could easily produce heavy snowfall, poor visibility and hide exposed hazards like rocks and stumps. Get after your objectives early and enjoy the afternoon sunshine!Â

Snowpack Summary

A seasonally typical melt freeze cycle. This building crust will continue to bridge a weak, isothermal snowpack on most tree-line and alpine slopes. This crust will break down over the day and become increasingly hazardous for triggering with rising temperatures, solar input or rain. Dry snow can be found at the highest elevations along the divide.

Avalanche Summary

Spring afternoon cycle can be expected daily as the season closes.

Confidence

Problems

Loose Wet

Will be an issue for the rest of the season, most typically on solar aspects.

Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet.Be very cautious with gully features.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

2 - 3

Deep Persistent Slabs

Assume this will continue to linger for the time being.

Travel early on frozen crusts before the heat of the day.Avoid shallow snowpack areas where triggering is more likely.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 3

Cornices

Cornice failures is possible. Avoid slopes with cornices overhead.

Cornices become weak with daytime heating.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Apr 10th, 2016 4:00PM