• MESO: Mesoscale Discussion 0718

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon May 24 01:23:23 2021
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    ACUS11 KWNS 240123
    SPC MCD 240122=20

    Mesoscale Discussion 0718
    NWS Storm Prediction Center Norman OK
    0822 PM CDT Sun May 23 2021

    Areas affected...Southwestern North Dakota...Northern/Central South

    Concerning...Tornado Watch 197...

    Valid 240122Z - 240215Z

    The severe weather threat for Tornado Watch 197 continues.

    SUMMARY...Severe threat continues across the northeastern portions
    of ww197. At this time it's not clear a new ww is warranted

    DISCUSSION...Squall line that matured across parts of western SD has
    since become less organized as it approaches the eastern edge of
    ww197. Even so, a substantial cold pool has developed in the wake of
    this linear MCS and its forward propagation will likely continue
    across central/north-central SD into south-central ND. Additionally,
    LLJ is forecast to strengthen across ND over the next few hours, and
    warm advection along/north of the advancing warm front may prove
    sufficient for additional strong development. Will continue to
    monitor adjacent portions of the Dakotas for possible ww, but
    current trends may not support a new watch.

    ..Darrow.. 05/24/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!v3eSCXbgNF_rWsQ2V52mpLsoyFW0tfaj7OTcGH-_cAWR40fYWUM3PzNDneJYjHzXhZofPzJv$=
    for graphic product...


    LAT...LON 44330114 47200241 47340088 45899993 44499965 44330114=20

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