A powerful winter storm system could become a "bomb cyclone" over the Great Lakes and Northeast regions this week.

As a winter storm system pushed east, it wreaked havoc with tornadoes in Illinois and snow, ice, wind, rain and lightning for a wide swath of the nation.

It was an eventful time from Sunday afternoon into today that saw blizzard conditions stretch across the Upper Peninsula, dumping at least 2 feet of snow in some areas. The high winds whipped up huge waves on the Great Lakes. Gusts topping 60 mph also contributed to traffic accidents and more than 100,000 power outages across Michigan.

Snow storms dumped snow on both ends of the country, but how much fell varied widely. Maps show snow totals across USA.

Hundreds of flights were canceled and thousands delayed Saturday as a winter storm hit the U.S., with more disruption expected.

A major winter storm is pummeling the Tri-State Area with snow and ice after New York and New Jersey declared states of emergency.