• MESO: Mesoscale Discussion 2291

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Dec 27 18:33:22 2024
    ACUS11 KWNS 271832
    SWOMCD
    SPC MCD 271832=20
    ALZ000-FLZ000-MSZ000-LAZ000-272100-

    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=20

    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 https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!522lUZqtcfLuqIU8G9B1ij8ElU2XW6nm_6Go8fcEtx9tjGtSNOxN6ubdTkTQl6iXg2sVMcjbo= B0KY20Dj1Kc9xjOu8s$ 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=20


    =3D =3D =3D
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