Avalanche Forecast

Avalanche Bulletin - Little Yoho

Date issued

Nov 3, 2017 - 4:00 PM

Valid until

until further notice

Prepared by

stephen holeczi

We don't have any treeline or alpine observations at this point but consider these elevations to be in full winter condition. Be cautious around gullies and lee loaded slopes which may have isolated wind slabs from previous E and N winds. SH

Danger Ratings
Problems
Details

Early Season Conditions

Insufficient observations exist to reliably rate the avalanche danger. Expect shallow snow cover with thinly buried rocks and trees just beneath the surface. Avalanche danger often concentrates in gullies and other deposition areas, where windslabs may bond poorly to a weak underlying base. Deeper snow usually exists at higher elevations.

More Early Season Details

Avalanche Summary

No avalanche activity has been reported

Snowpack Summary

An average of 30-50cm at treeline and well over 1m in many alpine locations from reports. In some locations below treeline there is a notable crust 3-4cm thick and 20cm above the ground from warm weather just before Halloween. This could be a notable layer in the future. We have no alpine observations at this time.

Weather Forecast

Well thats a change of weather from the warmth last week! Continued overnight valley bottom lows to -15C over the next few days with a mixed bag of some flurries and sunny periods and N to E winds.

Danger Ratings Explained

1 - Low

Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.

Natural and human-triggered avalanches unlikely.

Small avalanches in isolated areas or extreme terrain.

2 - Moderate

Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.

Natural avalanches unlikely; human-triggered avalanches possible.

Small avalanches in specific areas; or large avalanches in isolated areas.

3 - Considerable

Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision-making essential.

Natural avalanches possible; human-triggered avalanches likely.

Small avalanches in many areas; or large avalanches in specific areas; or very large avalanches in isolated areas.

4 - High

Very dangerous avalanche conditions. Travel in avalanche terrain not recommended.

Natural avalanches likely; human-triggered avalanches very likely.

Large avalanches in many areas; or very large avalanches in specific areas.

5 - Extreme

Avoid all avalanche terrain.

Natural and human-triggered avalanches certain.

Large to very large avalanches in many areas.

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