Some of this seems like it might be a bit nutty, but if for nothing else, it's worth a visit for all the pictures and definitely a good story. Check out a pilot's view.

"une 13, 2004--2028Z 4:28pm Local Mid-Atlantic Region
How many separate areas of rippling/acceleration can you spot? Skies have been cleared out over central PA in a square pattern. See the radial pattern emanating from SE West Virginia. and a curious straight blocked cloud just to its east."