Rumble in the jungle

CBACCBAC Observations

Date of Observation: 12/06/2022
Name: Zach Guy

Zone: Northwest Mountains
Route Description: Schuylkill Ridge. Traveled on SE, E, NE and N aspects to 11,400′.

Observed avalanche activity: Yes
Avalanches: A pair of large persistent slabs ran naturally this morning in First Bowl, probably sympathetic. From ridgetop, we remotely triggered another large slab in First Bowl which appeared to sympathetically trigger a large slab in Birthday Bowl. Crowns were 2 to 3 feet thick on average, failing on fist hard, large grained facets. Spotted three D1-1.5 natural persistent slabs in Climax Chutes. Numerous skier triggered and natural loose dry avalanches on all aspects below treeline, D1 in size. The light was too flat to see much else.
Weather: Snowfall rates tapered by the time we got to the trailhead around 11 a.m. Light to moderate rates this afternoon, with a short period of heavy snowfall. About a foot of low-density snow accumulated since early this morning. Winds were moderate at ridgetop with a decent amount of blowing snow.
Snowpack: Widespread collapsing and shooting cracks on everything with old snow at the base, mostly just while skinning and no stomping required. Went to a few frequent flier slopes BTL that rumbled and shattered but didn’t move. NTL suspect slopes produced a mix of shattering but staying put and shattering and releasing. On southerly aspects lacking old snow layers, we saw no evidence of slab instabilities except some cracking in the storm snow near wind drifted terrain. Sheltered terrain sluffed readily in the top 12″ of snow.