AccuWeather reports two rounds of severe weather will threaten the South today. The first is currently racing eastward across the Deep South. The second will ignite later today over the Arklatex.

In the first in-depth study of its kind ever done in the Southeastern United States, researchers at the University of Georgia and Emory University have discovered a link between thunderstorms and asthma attacks in the metro Atlanta area that could have a "significant public health impact."

Summer thunderstorms become much more fierce when they collide with a city than they would otherwise be in the open countryside, according to research led by Princeton engineers.