Thunderstorms are moving through the lower Mississippi River Valley in association with a large swath of rain by a bold Low Pressure System. Plenty of rain was dumped on southeast Texas and Louisiana early today. I saw Shreveport experienced nearly 2.5" from the main line of rain.
Here is a quote from the latest Mesoscale discussion for eastern LA through southwestern MS...
"A LEADING STRATIFORM RAIN AREA
HAS DEVELOPED AHEAD OF THE STRONGER STORMS. SEVERAL DISCRETE STORMS
PERSIST JUST OFF THE LA COAST...AND THE GREATEST TORNADO THREAT WILL
LIKELY EXIST OVER SERN LA AS THIS ACTIVITY MOVES ONSHORE WHERE THE
BOUNDARY LAYER IS VERY MOIST AND MORE UNSTABLE THAN FARTHER NORTH."
I expect things to "downgrade"in severity as the main rain line pushes through the Pine Belt this evening and tonight, but a relatively micro low pressure area in Southern Arkansas could create some rotation in the atmosphere late tonight. I expect mainly lightning and thunder impedded in the storms. The highest instability seems to be along the MS Coast in Jackson, Harrison, and Hancock counties.