Local meteorologist have tried to explain away the ice circle as the work of Mother Nature working her magic with the current and eddies in the river thereby creating a perfect circle of rotating ice chips. Whoever heard of such drivel? Magic?? Really!!!!
I think its a piece of lost Top Secret government equipment that fell off a satellite and into the river and is now bending space-time-gravity around it into a vortex into another dimension whereby the "government" can spy on all good and honest Americans and it is some "government agency" creating this "Mother Nature" cover story until interest is lost in this story and they can recover the Top Secret equipment.