Central Sierra Nevada

Problemi valanghivi

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco

  Probabilità

  Possible

  Dimensione

  1–2

  Ridgetop winds out of the SW have drifted new snow, filling in slopes below ridgetops and creating new wind slabs over the past 24 hours. This problem is most likely to exist in areas above about 8,000' where the most new snow has fallen. Look for clues of potentially unstable wind slab, such as visible drifting snow, areas of locally deeper new snow on the downwind side of ridgetops, snow surface cracking, or recent avalanches. Move cautiously around avalanche terrain today, especially where signs of unstable snow are present.

  

• 

  Loose Wet

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco

  Probabilità

  Possible

  Dimensione

  1–1.5

  Snow level was around 8,000' yesterday, and the recent new snow has wet snow characteristics in many areas. Backcountry travelers could trigger wet loose avalanches today in places where new snow has fallen on top of old snow. Use clues such as roller balls, pinwheels, and recent loose snow avalanches to identify areas of concern. Move cautiously around avalanche terrain where signs of instability are present. An initially small wet loose avalanche could have consequences in complex terrain or if it becomes larger by entraining additional snow while moving downhill.