• MESO: Mesoscale Discussion 1129

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, July 22, 2018 07:35:53
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    ACUS11 KWNS 220735
    SWOMCD
    SPC MCD 220735
    NCZ000-SCZ000-221000-

    Mesoscale Discussion 1129
    NWS Storm Prediction Center Norman OK
    0235 AM CDT Sun Jul 22 2018

    Areas affected...Northeast SC and far southeast NC

    Concerning...Severe potential...Watch unlikely

    Valid 220735Z - 221000Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Locally strong/damaging wind gusts will be possible
    through 5-6 AM EDT, as a compact cluster of storms tracks to the
    east-northeast across northeast South Carolina (including Myrtle
    Beach) into adjacent part of southeast North Carolina (including the
    Wilmington area).

    DISCUSSION...Trends in mosaic radar imagery showed a compact, forward-propagating short line of storms moving through northeast SC
    during the overnight to early morning. These storms are tracking to
    the east-northeast at 35-40 kt along a moderately strong instability
    gradient, which extends from northeast SC to along the NC coastal
    area. Given the forward speed, available instability, and effective
    bulk shear of 25-35 kt, this organized cluster should be sustained,
    at least, until it moves off the Atlantic coast between 09-10Z.

    ..Peters/Edwards.. 07/22/2018

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

    ATTN...WFO...ILM...CHS...

    LAT...LON 33997982 34107924 34237856 34297786 34217741 33927733
    33497833 32947921 32847964 32888018 32918027 33038033
    33517993 33997982



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