Date issued

Nov 9, 2017 - 3:00 PM

Valid until

Nov 10, 2017 - 2:00 PM

Prepared by

KESAdmin

Still very limited observations at this time.  The "Halloween" crust that  we are seeing in the snowpack will likely be a problem for the new few months... 

Regular season
Friday - November 10, 2017
Alpine

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.

Treeline

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.

Below Treeline
Saturday - November 11, 2017
Alpine

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.

Treeline

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.

Below Treeline
Sunday - November 12, 2017
Alpine

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.

Treeline

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.

Below Treeline

Avalanche Problem 1: Wind Slabs

What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?

Watch for wind slabs immediately below ridge-crests and in gully features.

Travel and Terrain Advice
  • Be careful with wind loaded pockets while approaching and climbing ice routes.
  • Be very cautious with gully features.

Avalanche Summary

No new avalanche activity was observed during a road patrol throughout the region on Thursday.

Snowpack Summary

Still Very limited observations.  Ski quality is pretty rugged at all elevations and almost hiking at the lower elevations!  The big thing to be aware about these days is the "Halloween Crust" which is being found up to 23-2400m in the forecast area.  Windslabs overlying this crust are our main concern at this time especially on N and E aspects in Alpine terrain.  Pockets of windslabs may also be found along ice climbs so use caution between pitches along routes.

Weather Forecast

A trace of new snow over the next few days with temperatures warming up to more seasonal values.  Winds will continue to be light out of the SW at most elevations.  Gusty towards alpine terrain. 

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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