10cm new bluebird alert

5-15 cm Hst 2500m elev, no slabs from skiing or high marking. Under new snow there is Firm double wind slab 10cm thick or variable with facets under. No recent naturals from the weekend. Thursday and friday had SW wind then switch to light North. -17 high on saturday and clear skis. Haven't seen newsurface hoar yet. Goood skiing, hero sledding, no slabbing. Rode steep couloirs, convexities and pillows. Observed extreme simultaneous highmarking, sledding over crevasse bridges and into non motorized closures with no fucks given.