• MESO: Mesoscale Discussion 0681

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed May 19 01:55:20 2021
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    ACUS11 KWNS 190155
    SPC MCD 190154=20

    Mesoscale Discussion 0681
    NWS Storm Prediction Center Norman OK
    0854 PM CDT Tue May 18 2021

    Areas affected...Southeast TX

    Concerning...Tornado Watch 188...190...

    Valid 190154Z - 190330Z

    The severe weather threat for Tornado Watch 188, 190 continues.

    SUMMARY...The threat for damaging wind and a tornado or two will
    continue as an ongoing MCS moves eastward tonight.

    DISCUSSION...Convection across southeast TX has consolidated into an eastward-propagating MCS. Favorable instability (MLCAPE of 1500-2000
    J/kg) and sufficient effective shear (30-40 kt) will continue to
    favor some organization as the system progresses across southeast
    TX. Locally damaging wind will be possible, especially near the
    bowing portion of the line as it approaches the Houston area between
    02-03Z. The KHGX VWP continues to show moderately strong low-level southeasterly flow with some veering with height, which will support
    transient supercell structures capable of a tornado or two, and
    perhaps some hail.

    ..Dean.. 05/19/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!rRO3jfGvF4wjaA1JpBZY1of6Sk9MUEPhp4IoCbmH4kkVm2DBdf7BZNSxeucebgRwD72PSIJc$=
    for graphic product...


    LAT...LON 28839682 29669638 30189628 30439616 30569596 30639558
    30429528 29969528 29459548 29119581 28979601 28819638

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