Provo

Problèmes avalancheux

• 

  Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Likely

  Taille

  3

  We have plenty of weak sugary faceted snow (persistent weak layer) scattered on almost all aspects and elevations throughout the Provo Range. However, what varies is the slab (the snow sitting above the weak layer). In sheltered locations, this slab might only be 10-15" inches deep, and in areas where the wind has loaded the slope, the slab could be anywhere from 1-3' feet deep and hard as a rock. In any case, we have dangerous avalanche conditions and you can still trigger a season-ending slab avalanche 1-3' feet deep and hundreds of feet wide, failing on a persistent weak layer.

  With more snow and wind on the way, the avalanche danger will be on the rise. It's going to get a lot worse before it gets better. But, the good news! This problem will go away, just not this week. Remember, it's a long season, and it's shaping up to be an epic winter, don't ruin it now by getting caught in an avalanche.

  Video: Drew Hardesty & Wilson from Mt. Aire.

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Possible

  Taille

  2

  As the southerly winds continue to strengthen over the next 24 hours, and with plenty of snow available to transport, we can expect to find new slabs of wind-drifted snow dotted across the terrain. These slabs of wind-drifted snow can be soft or hard and will be most pronounced at upper elevations on slopes facing west through north through southeast.

  Remember, any wind slab avalanche that you trigger has the potential to step down into deeper weaker layers in the snowpack, creating a much more dangerous avalanche.