Mesoscale Discussion 2279
NWS Storm Prediction Center Norman OK
0847 PM CST Mon Nov 20 2023
Areas affected…southern Mississippi into southwest Alabama
Concerning…Tornado Watch 712…
Valid 210247Z – 210445Z
The severe weather threat for Tornado Watch 712 continues.
SUMMARY…A tornado or two remains possible this evening over
southern Mississippi, with a few damaging gusts possible as well.
The severe risk may eventually spread into parts of southwest
Alabama later tonight.
DISCUSSION…A broken line of storms including a few supercells
currently stretch east-central MS southwestward into southwest LA.
Deep-layer shear remain favorable to sustain cells this evening,
with effective SRH maximized over central MS currently.
Persistent southerly winds in the lower 2 km will continue to aid
moisture advection, with upper 60s F dewpoints spreading north
across southwest AL ahead of the ongoing MS storms. A somewhat
stable air mass exists east of a batch of warm advection showers now
forming over southwest AL, and this general zone may be as far east
as the main severe risk gets tonight.
As cells continue east across MS and approach the AL state line,
additional watches may be considered.
…Please see www.spc.noaa.gov for graphic product…
LAT…LON 31389080 31788989 32128918 32448848 32428803 32258787
31668765 31318778 31048803 30738909 30669006 30669082
30809105 30979112 31139108 31389080