• MESO: Mesoscale Discussion 1191

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jul 8 02:00:43 2021
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    ACUS11 KWNS 080200
    SPC MCD 080200=20

    Mesoscale Discussion 1191
    NWS Storm Prediction Center Norman OK
    0900 PM CDT Wed Jul 07 2021

    Areas affected...Coastal areas of southeast Georgia and southern
    South Carolina

    Concerning...Tornado Watch 347...

    Valid 080200Z - 080400Z

    The severe weather threat for Tornado Watch 347 continues.

    SUMMARY...The tornado threat will persist across remaining areas of
    WW 347. The greatest near term risk (over the next 1-2 hours) will
    reside across coastal areas of the GA/SC border.

    DISCUSSION...The primary rain band associated with Tropical Storm
    Elsa continues to translate along the GA coast, and periodic
    lightning jumps indicate that the thermodynamic environment is still
    favorable for strong updrafts despite the loss of diurnal heating.
    Velocity data from KJAX shows transient couplets within this band -
    namely just offshore. Low-level confluence remains maximized along
    the band axis, and high theta-e air in proximity to the coast
    (denoted by mid 70s dewpoints) coupled with easterly surface winds
    on the northern side of the band are maintaining an environment with
    sufficient instability and low-level helicity conducive for brief
    tornadoes. The near-term tornado threat will likely be maximized
    along this band, which should continue to move along the GA/SC coast
    over the next 1-2 hours.

    ..Moore.. 07/08/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!rImbbxNCOIon-81SO4rQ9c1UhLO11kI35Fq0QNKwKjPqBcqg180xmkTGIWPdY8E_YfAMMCcv$=
    for graphic product...


    LAT...LON 31048123 31518121 31758151 32258160 32548133 32788115
    32798068 32578044 32218031 31778041 31338056 30998075
    30898099 30908113 31048123=20

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