Mt Hood

Problèmes avalancheux

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Very Likely

  Taille

  1–2

  Strong winds and heavy snowfall will build fresh and sensitive wind slabs into Thursday morning. Human triggered avalanches will be very likely on aspects collecting drifting snow, especially during the morning hours.  Larger avalanches will be more likely at upper elevations, where naturally triggered avalanches are likely as well. If you travel in the backcountry Thursday avoid travel in terrain connected to steep open slopes at higher elevations. Avalanches may run to valley bottoms. Give cornices wide berth and stay off slopes over 35 degrees where windblown snow has accumulated.  Firm and textured snow as well as cracking in the snow are signs you could trigger an avalanche.

  

• 

  Storm Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Likely

  Taille

  1

  At lower elevations and in wind-sheltered areas use caution where you find more than 6 inches of recent snow.  Storm slab avalanches are most common during and just after periods of intense snowfall. Use small and inconsequential test slopes to examine the bond of the recent snow to the snow below. Look for evidence of heavier snow above light snow near the surface and cracking in the snow as you travel. Slightly warming temperatures may make storm slabs heavy and behave like wet loose avalanches. In either case, you'll want to navigate around slopes steeper than 35 degrees and avoid features such as convex rolls and unsupported slopes like those above cliffs or creeks.