• MESO: Mesoscale Discussion 0256

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Mar 15 12:46:31 2024
    ACUS11 KWNS 151246
    SWOMCD
    SPC MCD 151245=20
    GAZ000-ALZ000-MSZ000-151415-

    Mesoscale Discussion 0256
    NWS Storm Prediction Center Norman OK
    0745 AM CDT Fri Mar 15 2024

    Areas affected...East-central MS into central/northeast AL and
    northwest GA

    Concerning...Severe Thunderstorm Watch 51...

    Valid 151245Z - 151415Z

    The severe weather threat for Severe Thunderstorm Watch 51
    continues.

    SUMMARY...A localized damaging-wind threat may persist through the
    morning.

    DISCUSSION...A long-lived QLCS is gradually moving eastward across
    parts of MS/AL into northwest GA this morning. Within the larger
    QLCS, shorter line segments have occasionally taken on a north-south orientation through the early morning, accompanied by some increase
    in organization and damaging-wind potential. This general trend may
    persist into mid morning, with an isolated damaging-wind threat
    accompanying the stronger line segments that do not get undercut by
    outflow.=20

    Some threat may spread outside of WW 51 into northwest GA, though
    the need for downstream watch issuance is uncertain, due to weaker
    instability with northeastward extent (as noted in the 12Z FFC
    sounding and objective mesoanalyses). Farther southwest, some uptick
    remains possible from east-central MS into central AL, where MLCAPE
    of 500-1000 J/kg and favorable deep-layer shear remain in place this
    morning. Local watch extension may need to be considered for parts
    of MS/AL, depending on short-term convective trends.

    ..Dean/Thompson.. 03/15/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9DWGN4_LBRt485EOZSpx5B60G9eB5GMTGMndAhZxHRXMbnMRSNWJPDyvAXGjafelHXSS90b9H= H6cgQX6yVw1LoJbkqY$ for graphic product...

    ATTN...WFO...FFC...BMX...HUN...JAN...

    LAT...LON 33048915 33118746 34018604 34848520 34838479 34428447
    33348515 32728639 32478762 32358836 32318902 32338946
    32608954 33048915=20


    =3D =3D =3D
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