Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
Deeply buried weak layers are becoming less reactive, but you might still trigger an avalanche that fails on them. If you do trigger one, it can become very large quickly. These might be triggered from below a slope or from a long distance away so be aware of slopes above you. Traveling on slopes less than about 30 degrees with no steep connected terrain above you can greatly reduce your risk.
As temperatures climb and the sun heats snow surfaces, you can expect Loose Wet avalanches to become a concern on steep lower-elevation slopes. Snow with exposed dust and near rock bands will heat up faster. Wet, mushy, and gloppy snow are signs to move to colder aspects or call it a day.