• MESO: Mesoscale Discussion 1971

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Aug 12 22:13:46 2023
    ACUS11 KWNS 122213
    SWOMCD
    SPC MCD 122213=20
    GAZ000-FLZ000-ALZ000-130015-

    Mesoscale Discussion 1971
    NWS Storm Prediction Center Norman OK
    0513 PM CDT Sat Aug 12 2023

    Areas affected...south-central GA...into portions of southeast AL

    Concerning...Severe potential...Watch unlikely=20

    Valid 122213Z - 130015Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Scattered storms may pose an isolated risk for damaging
    gusts through this evening.

    DISCUSSION...Over the last hour, scattered thunderstorms across
    parts of central GA and eastern AL have shown occasional
    intensification and the potential for isolated damaging gusts.
    Ongoing within a strongly unstable (3000-4000 J/kg), but weakly
    sheared environment, storms are excepted to remain predominately multi-cellular. With less than 20 kt of deep-layer shear evident on
    the FFC VAD, storm organization potential does not appear high.
    Upscale growth doesn't appear overly likely either, given the weak
    background and surface flow. Thus, the severe wind risk should be
    tied to occasional downdraft pulses within the strongest of the
    ongoing multi-cell clusters. Driven by the buoyancy, isolated
    damaging gusts will remain possible through this evening as storm
    slowly propagate south by southeast. The severe risk should
    gradually diminish after sunset with the onset of nocturnal
    stabilization.

    ..Lyons/Thompson.. 08/12/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!570CJimnsSlxEFzze2CcHF4mCNvfIhHDAB2yhm80yjTczLFT-tAVRehBIizjXIQ29AQxEvbHu= 9MIq1A7mqTQXw1GcAc$ for graphic product...

    ATTN...WFO...CAE...FFC...TAE...BMX...

    LAT...LON 33808304 33888274 33808261 33328225 32928228 32608233
    32278252 31968279 31748305 31518348 30978444 30828505
    30878515 30938543 31158561 31828570 32318558 32958480
    33188436 33388404 33638350 33808304=20


    =3D =3D =3D
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