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  • MESO: Mesoscale Discussion 0549

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, May 28, 2018 04:15:25
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 280415
    SWOMCD
    SPC MCD 280414
    SDZ000-280545-

    Mesoscale Discussion 0549
    NWS Storm Prediction Center Norman OK
    1114 PM CDT Sun May 27 2018

    Areas affected...Western/central South Dakota

    Concerning...Severe Thunderstorm Watch 126...

    Valid 280414Z - 280545Z

    The severe weather threat for Severe Thunderstorm Watch 126
    continues.

    SUMMARY...Isolated severe hail and locally damaging wind potential
    will continue to spread northward mainly in South Dakota areas
    along/north of I-90 through late evening and early in the overnight.
    Severe Thunderstorm Watch 126 continues until 07Z.

    DISCUSSION...Numerous storm mergers have led to multiple
    northward-moving linearly organized clusters across
    southwest/south-central South Dakota late this evening. The
    convective mode should limit larger hail magnitudes the remainder of
    the night, although isolated bouts of marginally severe hail
    (roughly 1" diameter) remain possible. Although inflow will continue
    to become increasingly elevated owing to the stabilizing boundary
    layer with temperatures cool through the 70s F, steep lapse rates
    and relatively strong shear in the cloud-bearing layer will continue
    to support semi-organized linear structures capable of wind damage,
    but probably on an increasingly marginal/localized basis into the
    overnight.

    ..Guyer.. 05/28/2018

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...ABR...UNR...

    LAT...LON 44210396 44660369 45220118 44910003 43159988 43390275
    43700379 44210396



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