I'm currently watching a line of rain soon to be in the Pine Belt. A surface trough is producing a strict line of showers/storms all along the Mississippi River Valley. North Mississippi has the "heavier" portion of the line while we are in the scattered and "thin" area of the line. Instability values are low tonight in western MS and Louisiana, but eastern MS is more stable at this time. And wind shear values are extremely high, which can be an inhibiting factor for severe potential. It's difficult to produce when you have too much.
What do I expect?
I expect to see the line make it into the I-59 corridor after midnight and possibly near 1am. Before the main line we have the opportunity to experience some scattered showers. All in all, this will most likely turn into a typical scattered showers event, but the severe potential is unlikely all night long. Although, you might feel strong wind embedded along the rain line between 25-35mph. Rain totals will be slightly different across the region, but I don't expect anything extremely heavy.
Temps tomorrow will still be mild because the cold front is lagging behind the trough. Expect the cold front to move through late Sunday night and give Monday slightly cooler numbers.