The sun felt warm today and made solar aspects below 7000' moist. However, after 1300 clouds started rolling in and ridgeline winds out of the W started increasing. On my ski out I noticed small rollers shedding off of steep west aspects.
Apr 4, 2023 7:00 am
|HS-Hard Slab||I-New/Old Interface||3.5ft||
Today I went out to check out the explosive triggered D3 in Clark Canyon and to to gather info on snowpack structure before heading into a warmer regime.
Completed a crown profile at the sight of the Accordian Bowl avalanche @ 6000 ft, ESE aspect. This avalanche is characterized as a HS-AE-R4-D3-I. This hard slab occurred on a heavily loaded slope and failed on a softer layer (4F-) of decomposing particles just above ( 6 inches) the 3/31 MF crust. Max crown depths measured 5 ft and tapered to 2 ft in its shallower spots. This avalanche was approximately 400 ft wide and ran 600 ft. Check out photos for more details.
Skiing around I observed smaller explosive triggered soft slabs in wind drifted snow. These smaller avalanches were generally 4-8 in deep on leeward aspects above 6500 ft.
Digging around on Pea Gravel Ridge, I observed a fairly strong upper snowpack above the 3/21 crust. Snowpack test yielded unremarkable results. Most aspects I traveled on (minus northerlies) have a thin surface sun crust. Northerly aspects are still holding preserved, cold snow. In isolated, sheltered area BTL I observed a fresh batch of SH.
Comments: We have 2 flavors of wind slabs out there. The softer, shallower ones that formed in the last 24 hrs. And the bigger, hard slabs that formed in more exposed areas in the last 24-48 hrs. These larger hard slabs are gaining strength and stubborn to trigger.