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Avalanche Forecast - Lizard Range    


Date Issued   Sunday, 22 January 2012 5:11 PM      Valid Until    Monday, 23 January 2012 4:00 PM
Danger Rating: Monday Alpine Treeline Below Treeline
3 - Considerable Dangerous avalanche conditions. Careful snowpack evaluation, cautious route finding and conservative decision making essential.
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.
Tuesday Wednesday
Alpine 3 - Considerable 4 - High
Treeline 3 - Considerable 3 - Considerable
Below Treeline 2 - Moderate 2 - Moderate
Confidence: Fair - Intensity of incoming weather is uncertain on Tuesday
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?
Destructive wind slabs will be easy to trigger on lee and cross-laded slopes.
Travel and Terrain Advice
  • The new snow will requires several days to settle and stabilize.
  • Choose conservative lines and watch for clues of instability.
  • Be cautious as you transition into wind affected terrain.
  • Do not travel on slopes that are exposed to cornices overhead.
Cornices
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?
Cornices are extremely tender in the region. Given the current conditions, cornice fall would most likely be a trigger for an avalanche on the slope below.
Travel and Terrain Advice
  • The new snow will requires several days to settle and stabilize.
  • Choose conservative lines and watch for clues of instability.
  • Be cautious as you transition into wind affected terrain.
  • Do not travel on slopes that are exposed to cornices overhead.
Storm Slabs
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?
Friday and saturday's storm added load and reactivity to a deep storm slab that has been developing throughout the week. Watch for storm slabs on steep or unsupported terrain.
Travel and Terrain Advice
  • The new snow will requires several days to settle and stabilize.
  • Choose conservative lines and watch for clues of instability.
  • Be cautious as you transition into wind affected terrain.
  • Do not travel on slopes that are exposed to cornices overhead.

Prepared by jlammers