• MESO: Mesoscale Discussion 1585

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue Aug 24 04:32:55 2021
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    ACUS11 KWNS 240432
    SWOMCD
    SPC MCD 240432=20
    MNZ000-SDZ000-NDZ000-240630-

    Mesoscale Discussion 1585
    NWS Storm Prediction Center Norman OK
    1132 PM CDT Mon Aug 23 2021

    Areas affected...Dakotas

    Concerning...Severe Thunderstorm Watch 459...

    Valid 240432Z - 240630Z

    The severe weather threat for Severe Thunderstorm Watch 459
    continues.

    SUMMARY...Scattered severe thunderstorms will propagate east along
    the ND/SD border region tonight. Hail/wind are possible with this
    activity.

    DISCUSSION...Water-vapor imagery suggests at least one weak
    disturbance is ejecting northeast across the Black Hills region
    toward the central Dakotas. This feature appears to be partly
    responsible for recent upscale growth in convection over western
    parts of ww459. Latest radar imagery suggests significant hail core
    may be noted with the supercell over northwestern Potter County SD,
    with other strong/severe storms spreading along the ND/SD border.
    This activity is propagating east at roughly 25kt and should
    continue for several hours as substantial southerly LLJ is currently
    feeding this convection.

    ..Darrow.. 08/24/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!oD971IPgrPBToW6DOF8RGw8D-JZV0xRKWRlWsFY70wHBHLWamndgUc5VmS9hnUR75OK99IQv$=
    for graphic product...

    ATTN...WFO...FGF...ABR...BIS...

    LAT...LON 44750079 46510079 46329681 44599683 44750079=20



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