Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
You can trigger an avalanche that breaks one to two feet deep on weak snow buried at the start of the month. Slopes that face north are most suspect. Avalanches might also break close to the ground. Multiple people can ride a slope before one of these slides occurs, and you are unlikely to see any warning signs. To reduce your risk, look for slopes less than about 30 degrees that are not connected to steeper slopes above.
Caution should also be used for wet avalanches on steep, rocky, sunny slopes in the middle of the day. If the snow feels wet, move to slopes receiving less direct sun.