SUMMARY…An isolated threat for strong to damaging winds should continue for another hour or two before diminishing. Additional Severe Thunderstorm Watch issuance into northern MS is unlikely.
DISCUSSION…A long-lived squall line that produced widespread wind damage across the mid MS Valley earlier today has finally begun to show signs of weakening as it moves across parts of western TN and vicinity. Still, recent velocity data from area radars and a few observing stations have shown generally 35-45 kt wind gusts remain possible with the strongest portion of the line in western TN as of 0355Z. An outflow boundary from prior convection has greatly limited instability across much of AL, with an instability gradient noted on RAP mesoanalysis across eastern MS. With continued nocturnal cooling tonight and strengthening convective inhibition, the overall wind threat should continue to slowly diminish as the line moves into northern MS. A local extension in area of WW 238 could be made in northern MS, but additional Severe Thunderstorm Watch issuance is not expected.
