Central Sierra Nevada

Problemas de aludes

• 

  Loose Wet

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alta montaña
  • Límite del bosque
  • Bajo el límite del bosque

  Probabilidad

  Possible

  Tamaño

  1

  E-SE-S-SW-W aspects are slowly transitioning from recent storm snow towards future melt freeze conditions.  On most solar aspects by midday, there are 3-4'' of wet surface snow on top of colder more winter like snow below.  Until an established melt freeze crust is formed, loose wet avalanches will be possible.  Most of these loose wet avalanches will be in the form of human triggered roller balls or pinwheels.  Although as temperatures continue to warm throughout the week and winds decrease, larger loose wet avalanches could become possible.

  Use quick hand pits to identify surface wet snow on top of colder recent storm snow that has yet to undergo melt freeze.  Avoid solar aspects steeper than 35 degrees once the snow surface has more than a few inches of wet snow on top of the transitional recent storm snow.  Current roller balls and pinwheels indicate that the snow surface is loosing strength and that loose wet avalanches are possible.

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alta montaña
  • Límite del bosque
  • Bajo el límite del bosque

  Probabilidad

  Unlikely

  Tamaño

  1

  Moderate N-NE winds overnight with continuing winds throughout today could create small wind slabs on SE-S-SW-W-NW aspects near and above treeline.  These wind slabs are expected to be small in size and limited to the most efficient wind loading locations near peaks and ridges above 8000'.  Look for areas of active wind loading and signs of previous wind loading.  These small wind slabs could be most problematic in steep, complex terrain.