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  • MESO: Mesoscale Discussion 0602

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Friday, June 01, 2018 00:38:11
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 010038
    SWOMCD
    SPC MCD 010037
    TNZ000-KYZ000-ILZ000-MOZ000-ARZ000-010230-

    Mesoscale Discussion 0602
    NWS Storm Prediction Center Norman OK
    0737 PM CDT Thu May 31 2018

    Areas affected...Southern Missouri...Far Southern Illinois...Western Kentucky...Western Tennessee...Northern Arkansas

    Concerning...Severe Thunderstorm Watch 138...

    Valid 010037Z - 010230Z

    The severe weather threat for Severe Thunderstorm Watch 138
    continues.

    SUMMARY...A severe threat will continue this evening across parts of
    the mid Mississippi Valley where large hail, wind damage and perhaps
    an isolated tornado threat will be possible. WW 138 will be replaced
    with a new severe thunderstorm watch for many of the same areas and
    extending southward across northeast Arkansas and northwest
    Tennessee.

    DISCUSSION...Thunderstorm coverage has markedly increased over the
    last couple hours across southern Missouri in the western part of WW
    138. This activity is being supported by moderate instability and
    large-scale ascent associated with a shortwave trough located over
    the mid Mississippi Valley. A mid-level speed max of about 50 kt is
    creating strong deep-layer shear across much of the region. This
    combined with steep mid-level lapse rates in the 7.0 to 8.0 C/km
    range will support supercells with large hail. Damaging wind gusts
    will also be possible and this threat may increase especially if the
    cells can organize into a linear MCS this evening. An isolated
    tornado threat will also be possible but this threat is expected to
    gradually diminish over the next hour or two.

    ..Broyles/Thompson.. 06/01/2018

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

    ATTN...WFO...LMK...OHX...PAH...MEG...LSX...LZK...SGF...

    LAT...LON 35698895 35549055 35809241 36269284 37029264 37739069
    37728733 36578699 36078760 35698895



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