"South Braces for Flash-Flood Threat as Dayslong Rain Siege Continues"

A dayslong siege of heavy rain and thunderstorms is causing a serious flash-flood threat in the South, with more than 30 million people under flood watches and winter weather alerts in the central US. The heavy rain has already led to flash flooding in Texas, while winter storms continue to pummel the West, prompting hundreds of rescues in California. The rain is expected to persist through the week, with the greatest risk for flash flooding in drought-stricken areas like Louisiana and Mississippi. Additionally, freezing rain and snowfall pose travel threats in the Midwest and Northeast, with icy conditions leading to delays and cancellations at airports.