• MESO: Mesoscale Discussion 2316

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Dec 10 02:54:12 2023
    ACUS11 KWNS 100254
    SWOMCD
    SPC MCD 100253=20
    VAZ000-TNZ000-KYZ000-100500-

    Mesoscale Discussion 2316
    NWS Storm Prediction Center Norman OK
    0853 PM CST Sat Dec 09 2023

    Areas affected...portions of northeast Tennessee into far southeast
    Kentucky and extreme western Virginia

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

    Valid 100253Z - 100500Z

    Probability of Watch Issuance...20 percent

    SUMMARY...An instance or two of damaging gusts or a brief tornado
    may occur in association with an approaching line of storms.
    However, the severe threat should be sparse and a WW issuance is not
    expected.

    DISCUSSION...A QLCS continues to progress east across portions of
    southern KY into middle TN. However, low-level moisture and overall
    buoyancy are struggling to overspread far southeastern parts of KY
    into eastern TN, limiting the severe threat. As the axis of a LLJ
    overspreads the central Appalachians, strong deep-layer and
    low-level shear should result. The strong low-level shear suggests
    that a damaging gust or tornado could occur if a storm or line
    segment could ingest any surface-based, unstable air parcels.
    Nonetheless, the limited low-level moisture amid a cooling boundary
    layer suggests that ingesting surface-based, buoyant parcels will be challenging, so the severe threat should be sparse at best. As such,
    a WW issuance is not currently anticipated.

    ..Squitieri/Goss.. 12/10/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_YFOd4wweiZGuHl8Gwg-RPKieGqK8ONCG8XuxbW2FkUbeP1zQ7PSUN2MyLq9PVBzFYcuntSUO= Qpkt5W_ZhtDTytgMFI$ for graphic product...

    ATTN...WFO...RLX...MRX...JKL...

    LAT...LON 35708452 36108478 36628452 37418368 37428295 37218250
    36808208 36488208 36128256 35908307 35638359 35708452=20


    =3D =3D =3D
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