ABC News
Millions of people in states from the Great Plains to the Midwest were under the threat of tornadoes Tuesday afternoon, including Iowa where several twisters touched down near Des Moines. The National Weather Service issued tornado watches for parts of Nebraska, Iowa, South Dakota, Missouri, Arkansas, Wisconsin, Illinois, Minnesota, Kansas and Oklahoma through Tuesday night. Nearly the entire state of Iowa was under a "Particularly Dangerous Situation," according to the National Weather Service, which issued several tornado warnings near Des Moines.