A strong lake effect snow storm has set up over the Great Lakes region today dumping over 40 inches of snow areas near Buffalo, New York. Lake effect snow storms are characterized by a stationary band of precipitation. In the radar loop below you can see the band of precipitation stays in the same spot. This is why they get so much snow!
Below is the visible satellite image
A time lapse video below shows is quite impressive.
For more pictures see Capital Weather Gang and Wasatch Weather Weenies blog posts.