• MESO: Mesoscale Discussion 1819

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Aug 3 12:17:08 2023
    ACUS11 KWNS 031217
    SWOMCD
    SPC MCD 031216=20
    ALZ000-TNZ000-KYZ000-MSZ000-ILZ000-MOZ000-ARZ000-031445-

    Mesoscale Discussion 1819
    NWS Storm Prediction Center Norman OK
    0716 AM CDT Thu Aug 03 2023

    Areas affected...Far Southeast Missouri...Far Western
    Kentucky...Western and Middle Tennessee...Northern Alabama...Far
    Northeast Mississippi

    Concerning...Severe potential...Watch possible=20

    Valid 031216Z - 031445Z

    Probability of Watch Issuance...40 percent

    SUMMARY...The wind-damage threat could increase over the next few
    hours over western Tennessee, far northeast Mississippi and northern
    Alabama. Convective trends will be monitored. If intensification
    occurs, then weather watch issuance may become necessary.

    DISCUSSION...The latest high-resolution radar imagery from Memphis
    shows an MCS located from western Tennessee northward into southeast
    Missouri and southern Illinois. This cluster of strong convection is
    located along the eastern edge of a pocket of moderate instability.
    The instability, combined with large-scale ascent associated with a
    shortwave trough over the mid Mississippi Valley (evident on
    water-vapor imagery), will provide support for continued convective
    development over the next few hours. The MCS is forecast to track
    southeastward across west-central Tennessee into far northeast
    Mississippi and northern Alabama. As surface temperatures warm and
    instability increases, the severe threat associated with the MCS
    could strengthen. Wind damage would be possible, especially along
    the leading edge of the faster moving bowing line segments.

    ..Broyles/Edwards.. 08/03/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-2bWX2RY3uI3IsN158f3F6seQDJBX9UOp2jtShWQ1JnaGzUjvjtCLz8AB7100WzEbfuWbZAh6= 6hlBPNmQcwRf35umJs$ for graphic product...

    ATTN...WFO...OHX...BMX...HUN...PAH...MEG...LSX...

    LAT...LON 36799020 35918973 34718893 34108844 33688764 33708703
    33938647 34428613 35068612 35528661 36288755 37048853
    37668953 37748983 37649022 37269037 36799020=20


    =3D =3D =3D
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