Avalanche Forecast

Issued: Apr 29th, 2015 8:00AM

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 and Cornices.

Parks Canada danyelle magnan, Parks Canada

Summary

Weather Forecast

The forecast is generally unsettled. Today expect showers with freezing levels lowering to 2000m and moderate W'ly winds. We may see a few sunny breaks this afternoon. Thursday will be mostly cloudy with flurries/showers. Friday expect up to 10mm of precip with freezing levels to 2200m.

Snowpack Summary

There was no overnight recovery, with 6.3mm of rain at 1900m.The crust has been thinner between 1600-2000m and will break down faster there than at lower elevations.  Moist snow will almost certainly be found on most aspects and elevations. Any dry snow that could be found in high alpine north aspects will be come moist by later today.

Avalanche Summary

Loose, wet solar triggered avalanches were observed in the region yesterday. With the current rain on a weak isothermal snowpack avalanche activity is expected today.

Confidence

Problems

Loose Wet

An icon showing Loose Wet
There was little overnight recovery with temps remaining above freezing. Rain started around midnight, further weakening the snowpack.
Avoid exposure to terrain traps where the consequences of a small avalanche could be serious.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Very Likely

Expected Size

1 - 3

Cornices

An icon showing Cornices
Large cornices are likely becoming weaker with continued mild temps and as the weight of rain is added.
Give cornices a wide berth when travelling on or below ridges.Pay attention to overhead hazards like cornices.

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

Elevations: Alpine.

Likelihood

Possible - Likely

Expected Size

1 - 3

Valid until: Apr 30th, 2015 8:00AM