Avalanche Forecast Little Yoho

Date Issued: Valid Until:

Parks Canada william lawson, Parks Canada

Avalanche Forecast

Mon Apr. 15th ยท 4:00PM

Alpine

Danger Ratings Below Threshold

Treeline

Danger Ratings Below Threshold

Below Treeline

Danger Ratings Below Threshold
Wind Slabs Wind Slabs
Loose Wet Loose Wet

Alpine

Danger Ratings Below Threshold

Treeline

Danger Ratings Below Threshold

Below Treeline

Danger Ratings Below Threshold

Alpine

Danger Ratings Below Threshold

Treeline

Danger Ratings Below Threshold

Below Treeline

Danger Ratings Below Threshold
Current conditions are great up high, with north aspects still holding dry powder. There still some lingering concern with wind slab especially where it has formed over a crust.

Weather Forecast

A clearing trend forecasted for Tuesday and Wednesday with good overnight re-freeze. Freezing levels will reach 2000m as daytime high temperatures in the valley climb to plus 10. Later in the week we can expect more precipitation with up to 20cm by the weekend.

Snowpack Summary

30 to 50cm has fallen at higher elevations since April 9. Recent winds and snow have created windslabs on lee N and E aspects in the alpine, up to 100cm deep. Still some uncertainty with the March 7 layer, snowpack structure and recent test show a weakness 50 to100cm down on high north aspects but no avalanche activity has been recently reported.

Avalanche Summary

No new avalanches observed today. Loose dry avalanche activity in the past 24 hours has tapered.

Confidence

Problems

Wind Slabs

Wind Slabs

Recent storm snow (20-50cm) has been redistributed by steady and moderate Westerly wind over the weekend. Some drifts in immediate lees are 100cm deep. Use extra caution in areas where the wind slab sit over a crust.

Minimize overhead exposure during periods of heavy loading from new snow, wind.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Loose Wet

Loose Wet

Clear weather forecasted for Tuesday will increase the solar input on southerly aspects. This increased heating will likely shed the recent storm snow on steep solar aspects as the day warms up.

If the sun stays out you should avoid steep South and West aspects this afternoon.

Aspects: South, South West, West.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1 - 1.5