Central Sierra Nevada

Problèmes avalancheux

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Very Likely

  Taille

  2

  Little has changed as the storm cycle continues. Periods of moderate to high intensity snowfall and moderate to strong SW winds are continuing to drift snow and keep the wind slab avalanche problem ongoing. The vast majority of wind slabs exist near treeline and above treeline on NW-N-NE-E-SE aspects. Wind slabs may be encountered to a lesser extent on other aspects or in below treeline areas. Avalanche size up to D3 is expected (could bury a car, destroy a house, or break a few trees).

  Be aware of the potential for avalanches from above running down into lower angle treed areas. Route plan carefully, anticipating low visibility obscuring the view of overhead avalanche start zones.

• 

  Loose Dry

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Likely

  Taille

  1

  Continued development of unstable storm slabs remains likely from additional periods of high intensity snowfall today and tonight. Storm slabs are expected in wind protected areas mainly near and below treeline and may be encountered on any aspect. Avalanche size up to D2 is expected (could bury or injure a person).

  Route plan carefully to avoid avalanche terrain. If areas of questionable slope steepness are encountered during travel, use an inclinometer to measure slope angle in order to assist in data based decision making. Allow a margin for error. Be aware of the potential for steeper slopes above.