Those fatalities in Woodward are the only ones known to have resulted from this weekend's storms. But millions of people were bracing for even more severe weather late Sunday afternoon and night.
The states in the "bull's-eye" for the most dangerous conditions Sunday will likely be Wisconsin, Minnesota and Iowa, according to the Storm Prediction Center. CNN Meteorologist Alexandra Steele added that some bigger cities -- including Green Bay, Chicago, St. Louis, Little Rock and Houston -- could see isolated tornadoes, large hail and damaging winds.
About 5 million people from Wisconsin to Texas "need to be on guard," Steele said.
The National Weather Service received 122 reports of possible tornado touchdowns Saturday and early Sunday in Oklahoma, Kansas, Nebraska and Iowa.