Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 4
You can bet the the mid winter Persistent Weak Layer is still present in the higher north facing terrain. The wind always increases the avalanche danger by forming drifts in areas that already have a weak layer of snow. It's actually hard to say what the wind did. It's been so strong there may not be any obvious loading pattern. The bottom line is don't trust steep high north facing slopes. 30 degrees is the magic number when assessing terrain. Keep your slope angles under 30 degrees and you'll stay safe. The reality is that a much steeper slope is needed right now for an avalanche to release but just use 30 degrees for reference and you'll be good.