Powerful storms moved through the central Untied States for the third time in four days, but apparently caused no deaths. Dozens of people were injured as tornadoes and thunderstorms hit Indiana, Illinois, Missouri, and other states Wednesday evening. Early Thursday, forecasters withdrew a series of tornado watches in the southern states of Mississippi, Alabama, and Kentucky, and said the heavy weather that hit the central part of the country in recent days has finally receded. Wednesday's storms followed a deadly outbreak of violent weather a day earlier in Arkansas, Oklahoma, and Kansas that killed at least 15 people. On Sunday, the country's deadliest single tornado since the National Weather Service began keeping such records in 1950 killed 125 in the southwestern Missouri city of Joplin.