• MESO: Mesoscale Discussion 1613

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, November 01, 2018 13:43:54
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    ACUS11 KWNS 011343
    SWOMCD
    SPC MCD 011343
    GAZ000-FLZ000-ALZ000-011545-

    Mesoscale Discussion 1613
    NWS Storm Prediction Center Norman OK
    0843 AM CDT Thu Nov 01 2018

    Areas affected...the Florida Panhandle into southwest Georgia and
    southeast Alabama

    Concerning...Severe potential...Watch possible

    Valid 011343Z - 011545Z

    Probability of Watch Issuance...60 percent

    SUMMARY...A line of thunderstorms will progress eastward across the
    Florida Panhandle, southeast Alabama and southern Georgia today,
    with the main severe risk being damaging wind gusts.

    DISCUSSION...A line of storms currently extends along the length of
    central AL into the western FL Panhandle. The air mass ahead of this
    line becomes much drier with eastward extent due to a surface ridge.
    The 12Z TLH sounding showed almost no MUCAPE, with poor lapse rates
    aloft.

    Southerly surface winds will persist throughout the day, although
    there will be some veering as the main surface low continues to move
    northward away from the region. This will allow marginal
    destabilization across mainly the FL Panhandle, where a return to
    68-70 F dewpoints will allow for a few hundred J/kg MUCAPE to
    develop. Modest flow in the boundary layer along with heating/mixing
    may aid wind gust potential with a primarily linear storm mode.
    Additional activity ahead of the line is not expected due to the
    weak instability and presence of an inversion below 700 mb.

    ..Jewell/Grams.. 11/01/2018

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

    ATTN...WFO...FFC...TAE...BMX...MOB...

    LAT...LON 30348662 30828637 31538624 31948505 31898413 31588354
    30988326 30318347 29928379 30038411 29758452 29528513
    29718542 29938561 30198597 30288633 30348662



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