Weather forecasters on Wednesday expected drenching rains to roll into the storm-ravaged U.S. southern and central states, where thunderstorms and tornadoes killed at least three people and triggered widespread flooding. More than 30 tornadoes struck a swath from Texas to Iowa since Monday, according to the National Weather Service, and residents in at least three Oklahoma riverfront communities were urged to evacuate due to flooding. One person was killed and another was injured when a tornado struck the rural town of Adair, Iowa, about 50 miles (80 km)west of Des Moines, at about 1:30 a.m. local time, the weather service said.