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Avalanche Forecast - Lizard Range    


Date Issued   Saturday, 25 February 2012 5:08 PM      Valid Until    Sunday, 26 February 2012 4:00 PM
 
Danger Rating: Sunday 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.
3 - Considerable Dangerous avalanche conditions. Careful snowpack evaluation, cautious route finding and conservative decision making essential.
Monday Tuesday
Alpine 3 - Considerable 3 - Considerable
Treeline 3 - Considerable 2 - Moderate
Below Treeline 3 - Considerable 2 - Moderate
Confidence: Fair - Forecast snowfall amounts are uncertain on Sunday
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?
New soft windslabs may make it difficult to identify the stiff windslabs that developed earlier in the week. New windslabs may be enough in some areas to bury or injure a person.
Travel and Terrain Advice
  • Stay off recent wind loaded areas until the slope has had a chance to stabilize.
  • Avoid open slopes and convex rolls at and below treeline where buried surface hoar may be preserved.
  • Be aware of the potential for large, deep avalanches due to the presence of buried surface hoar.
  • Avoid freshly wind loaded features.
Persistent Slabs
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?
The light new snow may overload the February 08 surface hoar/ crust/ facet weak layer in areas where it is transported into a thick windslab. Triggering from light additional loads, and remote triggering is expected to continue.
Travel and Terrain Advice
  • Stay off recent wind loaded areas until the slope has had a chance to stabilize.
  • Avoid open slopes and convex rolls at and below treeline where buried surface hoar may be preserved.
  • Be aware of the potential for large, deep avalanches due to the presence of buried surface hoar.
  • Avoid freshly wind loaded features.

Prepared by triley