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Avalanche Forecast - North Columbia - Monashees and Selkirks    


Date Issued   Wednesday, 16 April 2014 4:02 PM      Valid Until    Thursday, 17 April 2014 9:00 PM

Avalanche danger can rise very quickly with warming and solar radiation. Be aware of changing conditions and overhead hazards.

For more insight into spring danger ratings, check out our Blog Post.

Danger Rating: Thursday Alpine Treeline Below Treeline
2 - Moderate Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
2 - Moderate Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
2 - Moderate Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
Friday Saturday
Alpine 3 - Considerable 2 - Moderate
Treeline 2 - Moderate 2 - Moderate
Below Treeline 2 - Moderate 1 - Low
Confidence: Fair - Forecast snowfall amounts are uncertain on Thursday
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.

Loose Wet
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?

Expect to see an increase in avalanche activity with forecast rain at lower elevations or on solar aspects if the sun comes out for extended periods of time.

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

Wind slabs are most sensitive to human triggering immediately lee of ridge crest and mid slope features like ribs.

Travel and Terrain Advice
  • Be cautious as you transition into wind affected terrain.
  • Avoid wind loaded features, especially slopes immediately lee of ridge crest and mid slope roll overs.
Deep Persistent Slabs
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?

Although unlikely to trigger, the potential for very large deep slab avalanches should remain on your radar. Cornice fall, strong solar, warming temperatures or a surface avalanche in motion could act as a trigger. 

Travel and Terrain Advice
  • Be aware of the potential for very large, deep and destructive avalanches due to the presence of deeply buried persistent weak layers.
  • Give cornices a wide berth when travelling on or below ridges.

Prepared by mbender