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Avalanche Forecast - Northwest Inland    


Date Issued   Thursday, 02 February 2012 4:53 PM      Valid Until    Friday, 03 February 2012 11:00 AM
Danger Rating: Friday Alpine Treeline Below Treeline
3 - Considerable Dangerous avalanche conditions. Careful snowpack evaluation, cautious route finding and conservative decision making essential.
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.
Saturday Sunday
Alpine 3 - Considerable 2 - Moderate
Treeline 2 - Moderate 2 - Moderate
Below Treeline 2 - Moderate 2 - Moderate
Confidence: Fair - Due to limited field observations
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.

Wind Slabs
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?
Below ridge crests, behind terrain features and in cross-loaded gullies.
Travel and Terrain Advice
  • Be cautious as you transition into wind affected terrain.
  • Avoid freshly wind loaded features.
  • Give cornices a wide berth when travelling on or below ridges.
  • If you are increasing your exposure to avalanche terrain, do it gradually as you gather information.
  • Whumpfing, shooting cracks and recent avalanches are all strong indicators of an unstable snowpack.
Storm Slabs
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?
Facets down 40-60cm may take some time to gain strength. Watch steep slopes, convex rolls, and unsupported slopes.
Travel and Terrain Advice
  • Be cautious as you transition into wind affected terrain.
  • Avoid freshly wind loaded features.
  • Give cornices a wide berth when travelling on or below ridges.
  • If you are increasing your exposure to avalanche terrain, do it gradually as you gather information.
  • Whumpfing, shooting cracks and recent avalanches are all strong indicators of an unstable snowpack.

Prepared by ccampbell