Persistent Slabs
- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Unlikely
- Tamaño
- 2
The Dry January Layer (DJL) of faceted snow is 1-3 feet deep and buried by a strong slab and supportable crusts, with the last reported avalanches failing on the DJL on Feb 22nd on Thurston Peak and the 24th just north of there.
We now view the PWL as dormant and human triggered avalanches are unlikely but not impossible. If you're looking for trouble, however, you may find it in recently wind loaded, steep, thin, rocky terrain in the highest elevations on the north side of the compass.
Looking ahead: with the skyrocketing temperatures next week, we anticipate the PWL becoming active again as melt water percolates down to the faceted grains and wet slab avalanches become our central avalanche problem. Stay tuned.