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  • MESO: Mesoscale Discussion 0909

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, June 27, 2018 21:56:06
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 272156
    SWOMCD
    SPC MCD 272155
    SCZ000-NCZ000-GAZ000-280000-

    Mesoscale Discussion 0909
    NWS Storm Prediction Center Norman OK
    0455 PM CDT Wed Jun 27 2018

    Areas affected...Central South Carolina and Far Eastern Georgia

    Concerning...Severe Thunderstorm Watch 229...

    Valid 272155Z - 280000Z

    The severe weather threat for Severe Thunderstorm Watch 229
    continues.

    SUMMARY...A line of storms continues moving southeast across Watch
    #229. Strong wind gusts are likely and hail is possible. The watch
    may need to be extended farther to the southeast given current storm
    movement before 01z.

    DISCUSSION...An upper-level shortwave trough continues to provide
    ascent aloft for this broken line of storms stretching from central
    North Carolina to central Alabama. The line of storms within Watch
    #229 appears to be accelerating given recent radar scans. A stronger
    cold pool appears to be developing behind the line of storms and the
    outflow remains relatively close to the leading edge of the line.
    Moderate buoyancy (MLCAPE of 1500-2000 J/kg) should help promote
    storm development as the line propagates southeastward. The overall
    shear environment remains relatively weak although there is some
    low-level veering in the profile per RAP soundings/VWP. Strong wind
    gusts are likely and severe wind is possible given the steeper
    low-level lapse rates. The storms may move out of the watch before
    it expires at 01z so a southeastward spatial extension may be
    necessary. A separate MCD is being written regarding the line of
    storms across Georgia/Alabama.

    ..Nauslar/Cook/Edwards.. 06/27/2018

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

    ATTN...WFO...CAE...GSP...FFC...

    LAT...LON 34928159 35028069 34538036 33928010 33688086 33338198
    33228252 33868281 34288297 34928159



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