Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 3
We stomped around treeline Tuesday and found weak layers getting a little more stubborn, yet still reactive to our stability tests.
The calendar might suggest we're rounding out February and turning the corner into March Madness, but the snowpack feels and looks similar to what we usually see in mid January. So, if the snowpack is running a month behind, I need to realign my mindset to the cold, dark days near the turn of the New Year, and continue to pump the brakes and gather as much intel as I can. When I look under the hood I realize our snow structure is tricky, it's complicated, and it's harboring multiple layers of faceted snow. Indeed, we've got a complex snowpack that feels deceivingly solid underfoot, but really showed its personality last weekend once we kicked the legs out from underneath. In fact, riders confirmed our theories, triggering numerous and notable slides, failing on a host of problematic weak layers, now buried 2-4' beneath the snow surface.
Here's the conundrum... we're not seeing the usual red flags like cracking and collapsing, but recent avalanches are natures freebie and the biggest red flag. So how do we manageable an unruly avalanche dragon? Simply steer clear of it and instead opt for non-avalanche terrain with no overhead hazard. Done and done!
This avalanche from Soapstone Mountain broke on a shallow, rocky, east facing slope at 9,800'. Tracks on a slope don't mean it's good to go. Whether it's on the first pull or the hundredth, all we need to do is find the sweet spot like near a bush or shallowly buried rock, collapse the pack (whoomph) and now we're off to the races with the roof crashing down on us.