• MESO: Mesoscale Discussion 1566

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jul 15 20:14:56 2023
    ACUS11 KWNS 152014
    SWOMCD
    SPC MCD 152014=20
    ARZ000-TXZ000-OKZ000-152215-

    Mesoscale Discussion 1566
    NWS Storm Prediction Center Norman OK
    0314 PM CDT Sat Jul 15 2023

    Areas affected...Parts of northeastern TX...southeastern OK...and
    southwestern AR

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

    Valid 152014Z - 152215Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Locally damaging gusts and marginally severe hail are
    possible through the afternoon. A watch is not expected.

    DISCUSSION...Isolated to widely scattered thunderstorms are developing/spreading slowly southward along a weak baroclinic
    zone/differential heating boundary draped across the ArkLaTex.
    Within the pre-convective environment, strong surface heating amid
    very rich boundary-layer moisture (upper 70s to lower 80s dewpoints)
    is contributing to a strongly unstable air mass (3500+ J/kg MLCAPE).
    As the inflow for these thunderstorms continues to diurnally
    destabilize this afternoon, updrafts may increase in intensity on a
    localized basis. While deep-layer flow/shear is generally weak
    (especially with southward extent), marginally severe hail and/or
    locally damaging gusts may accompany the stronger pulsating storms
    through the afternoon -- especially if any localized clusters
    develop.

    ..Weinman/Bunting.. 07/15/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-QCHYuVxlc92nLC3KTb1agGVmloiiNvoW7344zuWsWKpW6yIb95jOufdTEKkY1y65d1IGhVp9= luE-LB_-XVUFzCBEZs$ for graphic product...

    ATTN...WFO...LZK...SHV...TSA...FWD...

    LAT...LON 33319615 33039612 32939595 32869522 32989431 33099339
    33249246 33649213 33999208 34279222 34489240 34689264
    34749301 34649359 34459422 34349454 34079524 33819581
    33609602 33319615=20


    =3D =3D =3D
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