Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
You could trigger an avalanche on most slopes. An unusual easterly wind drifted snow onto a weak layer buried about two to three feet deep. Expect loading in strange places like farther downslope or westerly-facing slopes; if you see cracking or recent avalanches within the new snow, it is time to seek lower-angled slopes. Multiple people could ride a slope before triggering a large avalanche.
Increasing temperatures and sunshine will warm the snow surface. If you see roller balls, fan-like point releases, or punch through to your boot top, it is time to move to low-angled slopes with cold snow or call it a day. Even a small avalanche in consequential terrain could take you for a nasty ride.