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Mesoscale Discussion 0491
NWS Storm Prediction Center Norman OK
0840 PM CDT Wed Apr 13 2022

Areas affected...eastern Mississippi into southwestern Alabama

Concerning...Severe Thunderstorm Watch 127...

Valid 140140Z - 140245Z

The severe weather threat for Severe Thunderstorm Watch 127
continues.

SUMMARY...A QLCS is expected to pose a risk for damaging wind gusts
and isolated tornadoes as it moves to the east southeast. A corridor
of enhanced damaging wind potential maybe developing with a bowing
segment across eastern MS.

DISCUSSION...As of 0130z a fast moving QLCS was located across
eastern MS near the border with AL. Recent reports of damaging wind
gusts (some 75+ mph) have occurred with a bowing segment within the
line. As the line shifts eastward into a drier low-level
thermodynamic environment across western AL (dewpoints in the low
60s F), significant damaging wind potential may be developing.
Hi-res guidance and observation trends suggests the southern most
portion of the line will beco*e dominant as it slides southeastward
into the corridor of better low-level moisture advection across
southwestern AL. Sufficient buoyancy and vertical shear exist to
support a continued severe threat with the QLCS this evening. One
uncertainty remains the potential for tornadoes. While low-level
shear remains fairly strong (0-1km SRH of 100-200 m2/s2) the drier
low-level environment and weaker buoyancy may favor stronger outflow
and limit the potential for tornadoes with eastward extent.

..Lyons/Grams.. 04/14/2022

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...BMX...MOB...JAN...

LAT...LON   31488907 31668941 32108934 32388921 32688896 32908892
            33128893 33198893 33188841 33118784 32838738 32478703
            32148674 31788670 31458676 31088694 31048709 30898757
            30988795 31088830 31228870 31388891 31488907