Jeff Braun What is going on over the eastern Great Lakes Huron, Erie, and Ontario on December 13, 2005? See loop: ( http://www.cira.colostate.edu/cira/RAMM//picoday/051214/visloop.html ) and data below for additional help. Clicking on each image below will bring it up the full sized. Answer: These are simultaneous mesoscale vortices over the Great Lakes during the winter of Continue Reading