Here is an update from the National Weather Service in New Orleans concerning the risk for flash flooding across portions of the area mid to late-week. 

Overview of Impacts:

Scattered showers / few storms later tonight into Tuesday. Some could be locally heavy.

The main concern for our area will be Wednesday thru Friday, as storms become more widespread by entering from the west and may slow down/train over the same areas leading to the risk of flash flooding.

Main concern and highest confidence for flash flooding will be generally from near Baton Rouge,LA to McComb, MS on north, but flash flooding will be possible across the entire area.

A few storms may be locally strong to severe on Wednesday, with damaging winds and isolated tornadoes possible.

Multiple waves of heavy t-storms will persist at times into Friday, before the last round pushes through on Saturday, exiting to the east thereafter. Rises on area rivers/streams can be expected.

Smaller tributaries could reach minor flood stages.