Bridgeport Avalanche Center

Problemi valanghivi

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

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

  Probabilità

  Likely

  Dimensione

  1–2.5

  Strong SW winds during the storm have created slabs in and above the treeline. Wind-driven snow could be found below ridges, in gullies, and in cross-loaded areas.  Any area that collected wind-driven snow from this past storm still needs time to bond.  A person in avalanche terrain would be a likely tipping point today for a slab to release. A wind slab today could step down to deeper instabilities in the snowpack, our 2nd problem in the list below. Wind will shift today to the NW, possibly redistributing snow to the SE, watch for changing wind conditions and blowing snow today.

  

• 

  Deep Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

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

  Probabilità

  Possible

  Dimensione

  1.5–3

  Sheltered-facing slopes have been holding weak, sugary faceted snow in the middle and bottom of the snowpack before the storm.  After 3-6 feet of new snow from the Thursday- Friday storm this week, the weak and faceted snow is now buried very deep in the pack. There is a high level of uncertainty in this problem. This problem in specific areas might have gone through a natural avalanche cycle and is now gone, and in other locations, the faceted snow could have all the recent snow sitting on top of it, waiting for a trigger. Caution and conservative terrain choices are advised when engaging in avalanche terrain with a persistent and or deep persistent avalanche problem.