More destructive naturals from the past few days

CBACCBAC Observations

Date of Observation: 12/16/2022
Name: Zach Guy

Zone: Northwest Mountains
Route Description: Mt. Baldy, traveling primarily on south and southeast aspects to 12,400′

Observed avalanche activity: Yes
Avalanches: A handful of destructive persistent slabs ran in the past few days. Most notable includes a pair of very large hard slabs (D3) on Purple Ridge that ran over Purple Bench and reached the Slate River, ~2100 vertical, and several others in the ~D2-D3 range off or Ruby Peak, Peeler Peak, Schuylkill Peak, Bichmond, and Gothic. All fit the same distribution pattern as previous cycles. Today’s observed slides were all on W to N to E starting near or above treeline. Hard to say exactly which days they ran on, some crowns looked very fresh (24-36 hours), others were more drifted in and probably ran during the peak of the last storm (~12/13)
Weather: Cold, clear, light northerly winds this afternoon on Baldy. I could see notable transport in the Southeast Mountains this morning, especially near Whiterock.
Snowpack: Apart from one collapse in a relatively thin area (from wind erosion), we saw no signs of instability under foot. Test results on a windloaded SE facing slope near treeline produced propagating results (PST 47/137 END) under a 130 cm hard slab (up to pencil hard). The weak layer is showing substantial improvements compared to the start of the month; It was 4F+ and rounding. Still an ugly structure and now scary consequences, but on an improving trend.