• MESO: Mesoscale Discussion 0741

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed May 26 00:57:39 2021
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    ACUS11 KWNS 260057
    SPC MCD 260056=20

    Mesoscale Discussion 0741
    NWS Storm Prediction Center Norman OK
    0756 PM CDT Tue May 25 2021

    Areas affected...Upper Fox River Valley vicinity into southern Upper
    Peninsula of Michigan

    Concerning...Severe Thunderstorm Watch 203...

    Valid 260056Z - 260230Z

    The severe weather threat for Severe Thunderstorm Watch 203

    SUMMARY...Strong to locally severe gusts possible in the near-term, particularly for southern portions of the Upper Peninsula.

    DISCUSSION...The 00Z GRB sounding showed mid-level lapse rates of
    around 7 C/km with 42 kts of effective shear. The portion of the
    line moving into the Upper Peninsula is moving at around 40-45 kts.
    This would suggest that even marginal enhancement of the winds by
    the convection would result in strong to perhaps locally severe
    gusts. Within the past 20-30 minutes, KIMT ASOS measured 44 kts.
    These gusts will remain possible until the line encounters greater
    MLCIN with the marine layer.

    ..Wendt.. 05/26/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!pGLGITBLmKYa3B56UhUav7GLiYhHN6u9i4AuTG8gq9pSAl5w-zItuam2Fu6wYxu-ZLnje66y$=
    for graphic product...


    LAT...LON 45478818 46028775 46148683 45808687 44988765 44738788
    44478820 44638859 45058868 45478818=20

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