Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1.5–2.5
Regardless of aspect or elevation, you can trigger a dangerous avalanche on most steep slopes. You will find the deepest fresh deposits of snow on westerly-facing slopes that were deposited by usual easterly winds. The storm was large enough that even in wind-sheltered areas cohesive slabs now rest on a buried weak layer two to three feet deep. If you trigger an avalanche, it could result in an un-survivable avalanche like this one around Jones Pass.
Warm temperatures and ample sunshine will warm southerly slopes and upper elevations, and all slopes below treeline. Loose avalanches may run naturally, and you can easily trigger a wet avalanche later in the day.