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  • MESO: Mesoscale Discussion 1457

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, September 15, 2018 16:02:18
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 151602
    SWOMCD
    SPC MCD 151601
    NCZ000-SCZ000-151800-

    Mesoscale Discussion 1457
    NWS Storm Prediction Center Norman OK
    1101 AM CDT Sat Sep 15 2018

    Areas affected...Southeast North Carolina into extreme northeast
    South Carolina

    Concerning...Tornado Watch 376...

    Valid 151601Z - 151800Z

    The severe weather threat for Tornado Watch 376 continues.

    SUMMARY...The threat for a few tornadoes will persist into this
    afternoon, primarily across southeast North Carolina.

    DISCUSSION...As of late morning the center of tropical storm
    Florence was located over eastern South Carolina just southwest of
    Myrtle Beach. The storm is forecast by the National Hurricane Center
    to maintain a very slow west southwest drift this afternoon.
    Organized storm structures including occasional meso-vortices and
    bowing segments continue to develop within the outer convective
    bands. The most prominent of these extending into southeast NC is
    associated with long low-level trajectories of very moist air from
    the Gulf Stream. Satellite presentation suggests that diabatic
    heating of the boundary layer will remain minimal inland. However,
    the fetch of mid 70s F near-surface dewpoints will maintain at least
    weakly buoyant thermodynanic profiles within an environment of
    sufficient 0-1 km shear for a threat of a few low-level mesocyclones
    and tornadoes north and east of the storm center through this
    afternoon.

    ..Dial.. 09/15/2018

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

    ATTN...WFO...MHX...RAH...ILM...

    LAT...LON 33727772 34337923 35387905 35467779 35147703 34267699
    33727772



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