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  • MESO: Mesoscale Discussion 1898

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Aug 7 23:27:55 2023
    ACUS11 KWNS 072327
    SWOMCD
    SPC MCD 072327=20
    SCZ000-GAZ000-080130-

    Mesoscale Discussion 1898
    NWS Storm Prediction Center Norman OK
    0627 PM CDT Mon Aug 07 2023

    Areas affected...Eastern Georgia into southern South Carolina

    Concerning...Severe Thunderstorm Watch 607...

    Valid 072327Z - 080130Z

    The severe weather threat for Severe Thunderstorm Watch 607
    continues.

    SUMMARY...A damaging wind threat will continue into the evening
    hours as thunderstorm clusters move east to the Atlantic coast.
    Downstream watch issuance is likely to address this concern.

    DISCUSSION...Over the past 1-2 hours, isolated to scattered
    thunderstorms developing ahead of the primary convective line across
    northern GA/SC have begun to consolidate into a semi-organized line.
    This new line continues to transition to becoming the leading
    squall, which should result in the degradation of convection to the
    west as it ingests cold-pool air. However, the air mass ahead of the
    leading line remains very unstable with MLCAPE estimates upwards of
    3500-4000 J/kg to the Atlantic coast, per recent RAP forecast
    soundings and mesoanalysis. While deep-layer shear remains meager,
    the abundant buoyancy and PWAT values near 2.0 inches will continue
    to support robust, though perhaps transient, updrafts. Associated
    wet downbursts will pose a damaging-wind threat through the early
    evening hours, and a downstream watch will likely be needed to
    address this concern.

    ..Moore.. 08/07/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8njPPDiMI7qxFYHYRwtCCvBnE4qX6GGNC1GQvS6cPWOVMbAtsUYKv5a7o_Cwvu2-pWs-yqtdq= AwYtvcS_apJlucRkiU$ for graphic product...

    ATTN...WFO...ILM...CHS...CAE...JAX...FFC...

    LAT...LON 32738347 32848262 33008164 33498093 33718028 33527975
    33277931 32967925 32507990 32028056 31858122 31788213
    31898287 32188354 32368367 32508371 32738347=20


    =3D =3D =3D
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