While upper-level ridging dominates the weather pattern across the eastern half of the country, thunderstorm development has remained possible along the southern periphery.

Through this evening, stronger storms will be possible across much of Mississippi and Alabama. Storms will generally wind down with the loss of daytime heating.
As heat and humidity build each day, thunderstorm development will remain possible on the edge of high pressure. The main threat being straight-line damaging winds; gusts over 60mph will be possible.

The greatest threat of severe thunderstorms on Thursday will be from the Atlanta metro north into the Smoky Mountains of East Tennessee.

While not directly underneath the heat dome, strong heat and humidity have helped to fuel the storms.