• MESO: Mesoscale Discussion 2321

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun Dec 10 10:01:17 2023
    ACUS11 KWNS 101001
    SWOMCD
    SPC MCD 101000=20
    GAZ000-FLZ000-ALZ000-101130-

    Mesoscale Discussion 2321
    NWS Storm Prediction Center Norman OK
    0400 AM CST Sun Dec 10 2023

    Areas affected...Portions of the FL Panhandle...southern/eastern
    AL...and western GA

    Concerning...Tornado Watch 719...

    Valid 101000Z - 101130Z

    The severe weather threat for Tornado Watch 719 continues.

    SUMMARY...An isolated severe threat, including the potential for a
    couple of tornadoes, continues early this morning.

    DISCUSSION...Around 500-1000 J/kg of MLCAPE exists in a narrow
    corridor ahead of ongoing convection and a southeastward-moving cold
    front across parts of the western FL Panhandle, southern/eastern AL,
    and western GA. Even with some stability and near-neutral
    boundary-layer lapse rates noted in RAP forecast soundings across
    this region, sufficient low-level moisture still likely exists to
    support surface-based convection. Deep-layer shear remains more than
    adequate for organized updrafts, with enhanced southwesterly
    mid-level flow associated with an upper trough aiding around 40-55
    kt of effective bulk shear. A mix of short, bowing line segments and
    occasional supercell structures has been observed over the past
    couple of hours. Current expectations are for this mixed convective
    mode to continue for a few more hours early this morning as this
    activity spreads generally east-northeastward. 150-200 m2/s2 of
    0-1-km SRH is still present along/ahead of this convection per
    latest VWPs from KEVX/KEOX. Accordingly, any supercell that can be
    sustained remains capable of producing a tornado. Isolated damaging
    winds may also occur with the more linear convection along/near the
    cold front.

    ..Gleason.. 12/10/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9e2T2Uw6s32RUWyrJVITx8GmUkdAkKdiQ-Kj28CcJCKwe-RcFGppsOgwfTjPUWEpOIj2HDF-G= GqZ2RggVruloBz0nis$ for graphic product...

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

    LAT...LON 30358685 31258694 32628565 33058427 30938482 29708529
    29978567 30268631 30358685=20


    =3D =3D =3D
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