A warm, moist airmass is in place for this afternoon as a warm front has lifted northward across the area. Meanwhile, a strengthening low pressure system will move across the lower-plains tonight, swinging a surface cold front through Texas. In the upper-levels of the atmosphere, a shortwave impulse will work into southeastern LA tonight, increasing atmospheric lift and storm activity.
Storms will form in two distinct areas tonight. First area will be closer to the surface low pressure, located across the ArkLaTex, where atmospheric lift and instability will be greatest. This is also the area where severe weather chances will be highest. Second, will be in southeastern Louisiana, where atmospheric lift from the upper level impulse will spawn storms. Severe weather indices, especially instability, is not as impressive across southeastern LA, but enough low-level wind shear is present for storms to gain rotation, meaning isolated tornadoes may be possible.
The main thing to watch for in Acadiana is if enough storm activity will be able to manifest in between these two areas to produce severe weather. Most of Acadiana, which will be in between these two areas, is under a Level 1 risk for severe storms, but the main question will be the amount of storms that will be present across the area. Latest models take the majority of the storms more towards southeastern LA. Any storms that do manage to form across Acadiana could go severe though, with prime time to see storms being from 5pm through about 4am.