• MESO: Mesoscale Discussion 1230

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jul 10 06:22:29 2021
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    ACUS11 KWNS 100622
    SPC MCD 100621=20

    Mesoscale Discussion 1230
    NWS Storm Prediction Center Norman OK
    0121 AM CDT Sat Jul 10 2021

    Areas affected...far southeastern Nebraska/northwestern
    Missouri/northeastern Kansas

    Concerning...Severe Thunderstorm Watch 363...

    Valid 100621Z - 100745Z

    The severe weather threat for Severe Thunderstorm Watch 363

    SUMMARY...A local increase in damaging wind risk is apparent across northeastern Kansas/northwestern Missouri.

    DISCUSSION...Latest radar loop shows a north-south cluster of storms
    moving across southeastern Nebraska and northwestern Kansas, with a
    more southwest-to-northeast extension of the band into southwestern
    Iowa. Latest radar loop shows a rapid southward surge of this Iowa
    convection toward/into northwestern Missouri, at speeds in excess of
    70 kt. WIth a very unstable airmass in advance of this convection
    (mixed-layer CAPE in excess of 3000 J/kg per RUC-based objective
    analysis), and low-level ascent maximized due to warm advection
    associated with the west-southwesterly low-level jet, expect this
    convection to persist, spreading into the Topeka and Kansas City
    metro areas over the next hour to hour and a half. Damaging winds
    -- possibly in excess of 70 MPH locally, may occur.

    ..Goss.. 07/10/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!uPhCttVcMY6SapEgAFZCP0fcTDk_Fl47sZ6dD3LQhyU701h8lg5qhx20QfpVR-qtbvBnG0tO$=
    for graphic product...


    LAT...LON 40499544 40719465 40209355 39389369 38989429 38979507
    38969626 39189638 39969580 40499544=20

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