• MESO: Mesoscale Discussion 1445

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Aug 8 20:53:50 2021
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    ACUS11 KWNS 082053
    SPC MCD 082053=20

    Mesoscale Discussion 1445
    NWS Storm Prediction Center Norman OK
    0353 PM CDT Sun Aug 08 2021

    Areas affected...central and eastern Wisconsin

    Concerning...Severe Thunderstorm Watch 416...

    Valid 082053Z - 082230Z

    The severe weather threat for Severe Thunderstorm Watch 416

    SUMMARY...The threat for isolated severe hail, damaging winds, and a
    brief tornado continues across watch 416.

    DISCUSSION...Temperatures across eastern and central Wisconsin have
    warmed into the mid 80s with dewpoints in the low to mid 70s. This
    is yielding MLCAPE around 2000 J/kg. Effective shear has weakened
    across the area as mid-level winds have weakened to around 30 knots
    out of the south on area VWPs. This may be partially responsible for
    the seemingly unorganized nature of the convection thus far.
    However, some clustering has occurred in Adams and Marquette
    counties with occasional weak rotation. Relatively weak winds in the
    lowest 2km should limit the tornado threat, but backed surface winds
    downstream of this activity could support a brief tornado.

    ..Bentley/Thompson.. 08/08/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!vsQ9Bn9Rl01YyZGYtpbnP8p6ktvENRsAd2eGZY8M8PCiCq8AlIvM03d0q3ChgJutskybzVRt$=
    for graphic product...


    LAT...LON 43148952 43839013 44619081 45099089 45488968 45048721
    44708715 43058788 43148952=20

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