Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
You can trigger an avalanche in drifted snow on northeast through east to south-facing slopes. These avalanches may not give any warning signs before the slope shatters around you. The most dangerous slopes are where strong westerly winds drifted snow onto a buried crust two to four feet deep onto easterly slopes.
As temperatures quickly rise on Wednesday, pay attention to the snow surfaces. If you see the snow surface becoming moist, pinwheels forming, or small fan-like point release, it is time to see colder dry snow surfaces or head home. However, with the Persistent Slab avalanche problem, seek colder, dry snow less than about 30 degrees for safer travel options.