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  • MESO: Mesoscale Discussion 2299

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Dec 28 16:24:33 2024
    ACUS11 KWNS 281624
    SWOMCD
    SPC MCD 281624=20
    MSZ000-ARZ000-LAZ000-TXZ000-281800-

    Mesoscale Discussion 2299
    NWS Storm Prediction Center Norman OK
    1024 AM CST Sat Dec 28 2024

    Areas affected...portions of northern Louisiana into far southern
    Arkansas

    Concerning...Severe Thunderstorm Watch 717...718...

    Valid 281624Z - 281800Z

    The severe weather threat for Severe Thunderstorm Watch 717, 718
    continues.

    SUMMARY...The severe threat continues across the remainder of Severe Thunderstorm Watch 717 and Tornado Watch 718. In the near term, the
    greatest severe threat will be with a line of storms approaching
    from far northeast TX. The severe threat may increase across
    southeast AR over the next few hours. All severe hazards are
    possible.

    DISCUSSION...A QLCS is rapidly translating eastward amid a mainly
    elevated airmass in place. However, the southernmost portion of this
    QLCS is poised to interact with the warm front and associated
    surface-based airmass (characterized by upper 60s F surface
    dewpoints and 1000+ J/kg MLCAPE). Damaging gusts are the main threat
    with this QLCS in the immediate time frame. However, any interaction
    with the warm front may support in an increase in isolated tornado
    potential over the next couple of hours, especially over far
    northern LA. Latest radar data also shows an increase in
    thunderstorm intensity over far southeast AR, where the QLCS will
    also move toward by afternoon. As such, a WW issuance may eventually
    be needed farther east/northeast of ongoing severe WWs 717-718. All
    severe hazards would be possible.

    ..Squitieri/Hart.. 12/28/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!52j2ldMpH-qwxkxC78zcAvRDE9D2-gwNR-o-KGs08KgVKfgvuCKyTzKMN-LEL1cG8jDWRgfJC= -i-biQZDqbEPX4opKk$ for graphic product...

    ATTN...WFO...JAN...LZK...SHV...

    LAT...LON 33049468 33759289 33979186 33689121 33229115 32769133
    32529211 32469296 32409378 32399432 32419459 33049468=20


    =3D =3D =3D
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