Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
You can trigger an avalanche where last week's storm snow settled into a cohesive slab above older, weaker snow. The most avalanche activity reported so far has been on northerly and easterly-facing slopes near and above treeline. These slopes are the most dangerous. You may not see obvious signs of instability, like cracking or collapsing, but don't let a lack of these unstable signs trick you into thinking a slope is safe. If you choose to travel in steeper terrain, pick smooth, planar slopes and avoid common trigger points like convex rollovers or shallow spots near rocky outcrops.
You can find safer riding options below treeline, on southerly slopes, and on slopes less than about 35 degrees in steepness.