I'm guessing a test fire but making some nonetheless.

guns blowing at the base not, maybe not just a test??? Lights are on as well which would lead em to believe that this is the real thing. Real test will be what time they turn them off (if at all) tomorrow. If they go all out they could open pre-Tgiving!

and they now have turned off the guns... great 2 hrs of snowmaking, way to go