Galena Summit & Eastern Mtns

Problèmes avalancheux

• 

  Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Unlikely

  Taille

  1–2

  While unlikely, you have the highest odds of triggering a persistent slab avalanche on previously wind-loaded slopes above about 9,200 feet that face the northern half of the compass. These areas harbor weak layers (sugary facets, surface hoar, and crust + facet combinations) that remained dry during the March heat waves.

  Steep, rocky, wind-affected slopes with variable snowpack depths are most suspect. Smooth snow pillows and dunes indicate the wind has been at work. You probably won't experience obvious signs of instability, such as snowpack cracking and collapsing, before triggering a slide. 

  Additional Discussion - Wind Slabs: In the White Cloud Mtns, forecasted snowfall and wind could form isolated, thin wind slabs in exposed terrain this afternoon and evening. You are most likely to find fresh slabs on exposed slopes that faces the eastern half of the compass, after at least 2-3" of new snow falls. Keep your eyes peeled if you're traveling in this area late this afternoon or evening. 

  

• 

  Loose Wet

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Possible

  Taille

  1–1.5

  If / where the fickle spring weather does not produce cloud cover, cooler temperatures, and breezy wind, you may be able to trigger small Wet Loose avalanches. These are most likely on very steep, wind-protected slopes while they bask in unobstructed sunshine. Although slow-moving, these avalanches are surprisingly powerful and difficult to escape. 

  If you are sinking into a wet, unsupportable snowpack, you can either move to cooler slopes with more shade / wind or seek out gentler terrain. The threat of wet avalanches should decrease this afternoon.