Lake-Effect Vortices
qLake-effect vortices sometimes develop over the Great Lakes.
qThe vortices drift slowly with the background flow and can maintain their closed circulations for several hours.
qThe vortices sometime have a precipitation-free center called “eye”.
qThe diameters of these vortices ranges from about 10 to over 100 km.
qThe forming mechanism for the vortices is still unknown.
Radar Image of a vortex over eastern shore of Lake Michigan