Two million people throughout the South face the threat of "devastating flooding" after a weekend of violent storms and tornados, NBC News reports. Louisiana, Missouri, and Tennessee all have issued flash-flood warnings with regions of Kentucky, Arkansas, Mississippi, Alabama, and Texas also threatened. Throughout Sunday and overnight, 12 tornadoes or possible tornadoes were reported in Arkansas.
On Sunday, President Obama declared the flooding in Louisiana a major disaster; rising rivers along the Louisiana-Texas border required 3,300 residents to be evacuated.
By 11 p.m. Sunday, emergency responders had conducted 60 water rescues. Six people have died since the storms began.