Date issued

Nov 11, 2017 - 3:00 PM

Valid until

Nov 12, 2017 - 2:00 PM

Prepared by

KESAdmin

New snow is headed this way on Monday it looks like but unfortunately, strong winds and warmer temps are coming along with it!  Cross your fingers for no November Rain Crust!

Regular season
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
Monday - November 13, 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
Tuesday - November 14, 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?

Concern for this problem along ridgelines and in gullied features on N and E aspects and between pitches on ice climbs.

Travel and Terrain Advice
  • Be very cautious with gully features.
  • Be careful with wind loaded pockets while approaching and climbing ice routes.
  • Avoid lee and cross-loaded terrain near ridge crests.

Avalanche Summary

No new avalanche activity was observed over the past 48hrs.

Snowpack Summary

Not much is changing out there there these days.  Valley floors only have 10-15cm of snow and as you climb higher snow amount increase to anywhere from 50cm-1m of snow.  In alpine areas there are pockets of windslabs along ridgelines and in gullied terrain.  These were easily observed on Saturday during an ice-climbing training day.  The Halloween crust can be found 10-20cm off the ground up to 2400m.  Some older slides travelled far on this crust.  Its important to note that field observations are very limited at this time.

Weather Forecast

Winds and temps are forecast to begin to increase on Monday with the arrival of warmer air.  This new front will carry some precipitation with it and we may get 10-20cm overnight on Monday evening.  Not all models are in agreement on this storm at this time so stay tuned. 

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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