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Avalanche Forecast - Yukon    


Date Issued   Friday, 18 April 2014 10:00 PM      Valid Until    Sunday, 20 April 2014 10:00 PM

Happy Easter Weekend everyone! Hopefully we get some sun but if we do, remember that avalanche danger will rise with intense sunshine.

Danger Rating: Saturday Alpine Treeline Below Treeline
2 - Moderate Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
1 - Low Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
No Rating No Rating
Sunday Monday
Alpine 2 - Moderate 2 - Moderate
Treeline 1 - Low 1 - Low
Below Treeline No Rating No Rating
Confidence: Good
Learn more about danger ratings
Low Moderate Considerable High Extreme

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.

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.

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.

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.

Avoid all avalanche terrain.

Natural and human-triggered avalanches certain.

Large to very large avalanches in many areas.

Persistent Slabs
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?

Reactivity on this layer is spotty and unpredictable. Proceed with caution on steep open, convex, aggressive terrain.

Travel and Terrain Advice
  • Dig down to find and test weak layers before committing to a line.
  • Be aware of thin areas that may propogate to deeper instabilites.
Loose Wet
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?

If the sun appears on Saturday as it is forecast to do, be wary of solar aspects as they heat up throughout the day.

Travel and Terrain Advice
  • Avoid exposure to sun exposed slopes.
  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet.
Cornices
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?

Cornice sensitivity will increase if temperatures stay warm and the sun comes out.

Travel and Terrain Advice
  • Cornices become weak with daytime heating, so travel early on exposed slopes.
  • Give cornices a wide berth when travelling on or below ridges.

Prepared by jminifie