• MESO: Mesoscale Discussion 0354

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Apr 10 01:21:50 2021
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    ACUS11 KWNS 100121
    SPC MCD 100121=20

    Mesoscale Discussion 0354
    NWS Storm Prediction Center Norman OK
    0821 PM CDT Fri Apr 09 2021

    Areas affected...parts of north Texas

    Concerning...Severe Thunderstorm Watch 82...

    Valid 100121Z - 100415Z

    The severe weather threat for Severe Thunderstorm Watch 82

    SUMMARY...Sporadic cells capable of large hail remain possible
    within WW 82. A squall line is expected to back build southwestward
    along the front later this evening, with damaging wind potential
    into north Texas.

    DISCUSSION...The 00Z FWD sounding shows strong instability, with
    very steep lapse rates aloft and around 3500 J/kg MLCAPE. The
    hodograph is mostly straightline, supporting splitting cells in the
    Dallas area.

    A strong cold front is currently surging southeast across southern
    OK and into northwest TX. A squall line is taking shape over
    southern OK, and further back building is expected as the strong
    convergence interacts with the more unstable air mass south of the
    Red River. Therefore, in addition to a hail threat in the short
    term, a damaging wind threat may take shape over the next several
    hours. It is difficult to determine how far southwest the squall
    line will build, but portions of the I-35 corridor may be at risk
    this evening.

    ..Jewell.. 04/10/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!peWTrCuKeMfFlFRloCA7L8uRee5kebHenBZauqV_PKMhlcsgXZz4_CslbuqlK9lXIcmUFTok$=
    for graphic product...


    LAT...LON 31449788 32719731 33449692 33959680 34149637 34099567
    33829523 32859547 31869575 31519628 31219703 31129752

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