The site comprises six mounds and is the most intact Mississippian Culture site in the southeastern United States.

CNN: Indian mound

The system is forecast to weaken during Wednesday but will still pack potentially dangerous weather conditions for the southeastern United States.

CNN: Severe thunderstorms sweep the Mississippi Valley

The southeastern United States has the greatest concentration of fraud rings.

FORBES: Over 10,000 Identity Fraud Rings Exist in U.S.

The heavy rainfall accompanies a broad warming trend covering the southeastern United States and reaching into the Midwest, according to the weather service.

CNN: More rain for flooded parts of Louisiana

The National Weather Service says above-normal rain is expected in the next week over areas of the Southeastern United States, where the drought has steadily worsened.

CNN: Severe drought threatens Louisiana coastal marshes

The biomass industry is quickly expanding, especially in the southeastern United States, where giant pelletizing plants are popping up to turn trees into a ready-to-burn export commodity.

FORBES: Massachusetts Addresses "Biomass Loophole" and Limits Subsidies

Researchers at the University of Texas are warning that the invasive species from South America has the potential to change the ecological balance in the southeastern United States, largely because the ants can wipe out colonies of what's been widely considered the insect villain of the region, the fire ant.

CNN: 'Crazy ants' a threat in southern U.S.