Heavy rain moving through the South into Sunday will result in the threat for localized flooding.
Rain has already prompted some flash flood warnings across central Tennessee thanks to several inches of rain falling in a few hours time.
The rain will continue to expand in coverage through the day on Sunday, moving through the central Appalachians and into parts of the Carolinas.
This flash flood threat is all due to an area of low pressure that will be tracking through the Tennessee Valley.
The main threat from this system is flooding from widespread, long duration rainfall. Low-lying areas and locations along rivers and streams will be the most vulnerable for flooding.
Rainfall totals through Sunday night in many areas will average 1-2 inches with local amounts over 4 inches inches possible.
The Mississippi River is especially at risk for flooding from this system. River levels are already on the rise as water continues to make its way downstream following last weeks flooding rain in the Midwest.
The additional rainfall flowing into the Mississippi River from its tributaries will only add to the flooding potential along the river.
Severe weather will also be a threat with this system into tonight. The greatest threat for severe storms will be from central Texas through western Tennessee. More information about the severe weather threat can be found in this story.
The greatest risks from these storms will be damaging winds and hail. Wind gusts up to 60 mph in these storms can bring down tree branches and power lines.
Meanwhile, after the drenching rains across the South this weekend, the rainfall threat will shift into the mid-Atlantic and throughout parts of New England early next week, bringing an end to the nice weather currently in place.