• MESO: Mesoscale Discussion 2082

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Dec 30 04:56:37 2021
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    ACUS11 KWNS 300456
    SWOMCD
    SPC MCD 300456=20
    NCZ000-SCZ000-GAZ000-ALZ000-300700-

    Mesoscale Discussion 2082
    NWS Storm Prediction Center Norman OK
    1056 PM CST Wed Dec 29 2021

    Areas affected...east-central Alabama into northern Georgia and the
    far western Carolinas

    Concerning...Tornado Watch 571...

    Valid 300456Z - 300700Z

    The severe weather threat for Tornado Watch 571 continues.

    SUMMARY...Isolated reports of damaging gusts or a brief tornado
    remain possible across the watch area as a line of storms pushes
    east tonight.

    DISCUSSION...A line of storms currently stretches from northwestern
    SC across northern GA and into central AL, where a lone supercell
    produced a tornado earlier. Northern portions of the outflow are
    mainly producing rain showers into western NC, but an uptick in
    intensity with this portion of the line cannot be ruled out as it
    intercepts lower 60s F dewpoints.

    To the southwest, the strongest portion of the line continues to
    move across northern GA with relatively laminar outflow currently.
    The orientation of this line is becoming more parallel with the
    deep-layer shear, which is not particularly favorable for for
    forward acceleration. However, shear remains favorable for
    supercells, and a brief QLCS tornado remains possible along the
    line. The greatest instability will remain farther west into AL,
    with MLCAPE over 1000 J/kg, with around 250 m2/s2 effective SRH
    still favoring supercells.

    ..Jewell.. 12/30/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!v0Jxkn0aWVZLWoyErXFIkSmCelsYRkpWd5YUejQw7mLf72EquTn50OT7Mw8d0m8D-0V8BFAu$=
    for graphic product...

    ATTN...WFO...CAE...GSP...FFC...BMX...

    LAT...LON 33078664 33508553 33958450 34478369 35088296 35508247
    35608122 35348094 34908123 34248196 33458300 32948348
    32888425 32938558 32958620 33078664=20



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