Yep, we had what the forecast guys call a "stacked cyclone" over the Dakotas the past couple days that slowly moved south. VERY interesting clouds, very variable winds, t-storms of varying intensity. I was coming home from an EAA chapter meeting Tuesday and just had to keep driving so I could watch the turbulent sky. (My camera batteries crapped out so no good pics). But I won't forget the blue, purple, and orange lighting I saw "walking" across the sky that evening.
terry