Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1.5–2.5
You can trigger avalanches breaking two to three feet deep on buried weak layers. Northerly slopes at all elevations and southerly slopes in the alpine are most suspect. Slopes less than about 30 degrees without steep slopes overhead, and lower elevation slopes facing east through south to southwest provide safer travel options.
Wet loose avalanches are a concern in the late afternoon, especially on sunny slopes and in rocky areas. Roller balls, and slushy surface conditions are signs that wet avalanche activity is imminent and it's time to move to shadier slopes or exit avalanche terrain.