Record floodwaters inundated parts of southern Louisiana early Tuesday after intense rains caused flash flooding and prompted hundreds of rescues. Estimates by the National Weather Service put total rainfall at 12 to 18 inches across the region, with possible amounts of 20 or more inches in some areas. A flood warning has been issued until late Tuesday. Floodwaters were cresting overnight for Bayou Vermilion at Carencro at 5.5 feet over flood stage and 12 inches above the record set in May 2004.