Loose Wet
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–1.5
Natural and human-triggered wet loose avalanches are possible as warm sunshine softens crusts and melts snow at the surface. These avalanches are most likey on very steep, rocky, wind-sheltered terrain soaking in the sun. Many will initiate near exposed rocks and cliff bands, fanning out and growing in size as they move downhill atop slick crusts. Large slopes, chutes, and couloirs can produce powerful slides that could easily catch, injure, or bury people.
Pinwheels or herds of rollerballs on a slope indicate the snow surface is softening, and loose snow avalanches may soon follow (example). The underlying snowpack remains wet from last week's rain. Slides that gouge deeper into wet snow or flank out as wet slabs will be much larger and more destructive (photo at right/below). Don't underestimate the power of wet avalanches. Be aware of the terrain above you and where an avalanche could carry you.
(4/6/2024) Debris from a large wet slab that released in Basset Gulch near Baldy. This slide failed on a NNE aspect at 7,000', likely sometime on Thursday or Friday.