Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
New snow in the last 24 hours has built isolated pockets of slab less than a foot in depth that now rest on older persistent slabs. Triggering these smaller slabs has the potential to activate weak layers deeper in the snowpack in upper elevation terrain on the north half of the compass.
Slabs that formed over a week ago sit on top of weak snow. Triggering these slabs is becoming less likely over time, but the possibility still remains. Slab depths are in the 1-3 foot range, with previously wind loaded slopes holding the thicker slabs. Obvious signs of instability such as avalanches, shooting cracks and collapsing may not present themselves prior to triggering. Because of this it is important to practice safe travel. Ride one at a time across steep terrain, use islands of safety when stopping and communicate your plans with your partners.
(12/20/2024)
This avalanche was remotely triggered up Murphy Creek near the Stewart Massif ~8300' on a NE aspect on 12/20.
Photo: Bridger-Teton Avalanche Center