I'd swear that those circles were formed by a meteor hitting the atmosphere and causing a shock wave to ripple through the clouds. I wonder if this rain pattern has its roots in micro-meteor strikes causing a pressure wave downward towards the Earth's surface, squeezing moisture out at the vertical points of impact.
I don't have the science or weather background to say with authority, but I had to use a layman's speculation, that's what I'd think.
-PJ
There is no rain. Skies are clear all over the state.