Avalanche Forecast

Issued: Feb 5th, 2013 8:04AM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is moderate. Known problems include Wind Slabs.

ali haeri, Parks Canada

Glacier.

Summary

Weather Forecast

Westerly flow, light to moderate amounts expected today and moderate amounts into Wednesday with associated moderate to strong south west winds.

Snowpack Summary

10 to 20cm over the Feb 3 sun crust on steep solar aspect. Temperature crust down ~20cm below 1400m. Profile on Mt Fidelity, 2080m, SE aspect, 33deg. 227cm snow depth. Easy to moderate resistant planar test results down 12 and 20 and moderate to hard sudden planar results down 45 and 57cm. Wind effect in upper snowpack tree line and above.

Avalanche Summary

Yesterday there were 2 natural, size 2.0, slab avalanches east of the Rogers Pass summit and 1 natural , size 2.5 avalanche west of the summit.

Confidence

Intensity of incoming weather systems is uncertain on Wednesday

Problems

Wind Slabs

Reports of wind slab, 20 to 45cm deep, reactive to rider testing yesterday from sustained moderate to strong south winds for the past 3 days. Caution on lee and cross loaded slopes.

Avoid freshly wind loaded features.Be cautious as you transition into wind affected terrain.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Feb 6th, 2013 8:00AM