• MESO: Mesoscale Discussion 0598

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed May 12 01:02:28 2021
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    ACUS11 KWNS 120102
    SPC MCD 120102=20

    Mesoscale Discussion 0598
    NWS Storm Prediction Center Norman OK
    0802 PM CDT Tue May 11 2021

    Areas affected...South Texas

    Concerning...Severe Thunderstorm Watch 165...

    Valid 120102Z - 120300Z

    The severe weather threat for Severe Thunderstorm Watch 165

    SUMMARY...A severe threat is expected to develop to the south of WW
    165 over the next few hours. Wind damage and large hail will be the
    primary threats. New weather watch issuance will likely be needed as
    the storms move toward the south edge of the ongoing watch.

    DISCUSSION...The latest radar imagery from San Antonio shows a
    cluster of severe storms located to the north and northeast of
    Laredo. These storms are moving southward into a moderately unstable
    airmass, with the RAP estimating MLCAPE in the 2000 to 3000 J/kg
    range. The WSR-88D VWP out of Corpus Christi shows about 40 kt of
    0-6 km shear with flow at 1 km above ground level near 25 knot.
    Low-level flow is forecast to gradually increase across south Texas
    this evening. This combined with the instability will help to
    maintain cell intensity within the ongoing severe storm cluster.
    Wind damage and isolated large hail is expected to impact south
    Texas later this evening, and weather watch issuance will likely be

    ..Broyles.. 05/12/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!vQ9oEgNTVuQMJmsGKKX1R2c6i_wyupbKyUuWatjlZF0lJklWgrcwNmhZZTxs44jbg0D_Kbhj$=
    for graphic product...


    LAT...LON 28159728 27939870 27829946 27559957 26909936 26339902
    26069857 25969733 25959711 26579722 27089733 28159728=20

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