• MESO: Mesoscale Discussion 1692

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, December 02, 2018 13:00:40
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    ACUS11 KWNS 021200
    SWOMCD
    SPC MCD 021200
    SCZ000-GAZ000-FLZ000-ALZ000-021400-

    Mesoscale Discussion 1692
    NWS Storm Prediction Center Norman OK
    0600 AM CST Sun Dec 02 2018

    Areas affected...southern Georgia

    Concerning...Tornado Watch 436...

    Valid 021200Z - 021400Z

    The severe weather threat for Tornado Watch 436 continues.

    SUMMARY...Isolated severe thunderstorms remain possible across the
    watch area, and may spread into southeast Georgia this morning.

    DISCUSSION...Storms remain ongoing in a southwest to northeast
    oriented zone from the western FL Panhandle across much of southern
    GA. Supercell trends have decreased over the past few hours, but
    several substantial storms remain ongoing with modest outflow and
    shear zones noted on radar.

    Latest surface observations show a gradual northeastward advection
    of the near 70 F temperatures and upper 60s F dewpoints due to
    persistent southwesterly flow (50 kt at 1km) which is helping to
    erode the cooler outflow air. This in turn will allow effective SRH
    to rise over southeast GA this morning (the VAX VWP currently shows
    upwards of 300 m2/s2), and will increase the threat of damaging
    winds or a brief tornado. Storm trends will continue to be monitored
    for any increase and the need for another watch.

    ..Jewell.. 12/02/2018

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

    ATTN...WFO...CHS...JAX...FFC...TAE...

    LAT...LON 30788553 31308461 31788309 32118212 32448155 32358119
    31878098 31248111 30988164 30828260 30758382 30548500
    30568541 30788553



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