Gee - I wonder where everyone is going?
Funny to see all these airplanes on the traffic all heading in the same direction - like airplane Mecca.
Here's what I saw on my ipad enroute to KFLD - Fond du Lac. There are LOT's of airplanes 14500 ft below me (I am at 16500) all heading North...on Saturday before Oshkosh.
That was one nasty storm that they are skirting right in front of.
I'm guessing that those are formation flights for mass arrivals.