Mesoscale Discussion 2291
NWS Storm Prediction Center Norman OK
1232 PM CST Fri Dec 27 2024
Areas affected...portions of far eastern Mississippi into western
Alabama
Concerning...Severe potential...Watch unlikely
Valid 271832Z - 272100Z
Probability of Watch Issuance...20 percent
SUMMARY...An isolated threat for damaging gusts and tornadoes will
persist into the afternoon hours. A WW issuance is not expected.
DISCUSSION...A band of thunderstorms persist along the MS/AL border,
near the Gulf Coast, and these storms have shown some brief bouts of
low-level rotation over the past several hours. Regional VADs across
eastern MS into AL show gradually shrinking hodographs as the
low-level jet continues to drift northeast, away from the warm
sector. However, a robust mid-level trough is beginning to
overspread the southern MS Valley, which may help preserve a
favorable deep-layer shear field along the Gulf Coast during the
afternoon. Continued surface heating may support MLCAPE approaching
the 750-1000 J/kg range given mid 60s F dewpoints near the coast.
Overall, storms should continue to oscillate in intensity through
mid afternoon, with continued instances of low-level rotation
possible. Isolated damaging gusts and tornadoes remain the main
threats. The most immediate threat exists with storms approaching
the Mobile Bay area. However, convection has attempted to intensify
over far east-central MS with the approach of the mid-level trough.
Confidence in these storms reaching severe limits is overall lower,
but a stray damaging gust or tornado cannot be ruled out with any
storms that intensify in this regime. Either way, the isolated
nature of the severe threat suggests that a WW issuance is not
anticipated.
..Squitieri/Hart.. 12/27/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...BMX...MOB...JAN...LIX...
LAT...LON 30218984 31398957 32048931 32698896 33048871 33408835
33248802 32728788 32038767 31408739 30898727 30548728
30278757 30118862 30218984
2024-12-27 18:34:06
