• MESO: Mesoscale Discussion 0894

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jun 9 04:42:14 2021
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    ACUS11 KWNS 090442
    SPC MCD 090441=20

    Mesoscale Discussion 0894
    NWS Storm Prediction Center Norman OK
    1141 PM CDT Tue Jun 08 2021

    Areas affected...Western Dakotas

    Concerning...Severe Thunderstorm Watch 248...249...

    Valid 090441Z - 090615Z

    The severe weather threat for Severe Thunderstorm Watch 248, 249

    SUMMARY...Gusty winds,along with some hail threat, will be noted
    with a squall line as it propagates east over the next few hours.
    New severe thunderstorm watch is not currently anticipated.

    DISCUSSION...Linear MCS has evolved over the western Dakotas late
    this evening in advance of a short-wave trough that is ejecting
    northeast across eastern MT/WY. Over the last half hour or so, it
    appears that an MCV may be forming over Perkins County SD, just
    north of Prairie City. With an expanding precip shield in the wake
    of the squall line, this activity should continue to progress east
    at roughly 30kt. Gusty winds remain the primary threat but the
    downstream air mass is not as buoyant and it would appear this
    activity has peaked in intensity. At this time a new ww is not

    ..Darrow.. 06/09/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!uYE7DZcjpGgA580-sTH_uc0yXn8kBKgfwXFrD_z9lkM367-De1HKdspZURBRhluTAdJ-hLHk$=
    for graphic product...


    LAT...LON 43320328 44180240 44830211 46120260 46530141 44920074
    43810131 43320222 43320328=20

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