• MESO: Mesoscale Discussion 1077

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jun 15 19:09:14 2023
    ACUS11 KWNS 151909
    SWOMCD
    SPC MCD 151908=20
    FLZ000-GAZ000-ALZ000-152015-

    Mesoscale Discussion 1077
    NWS Storm Prediction Center Norman OK
    0208 PM CDT Thu Jun 15 2023

    Areas affected...Portions of southern AL...far southwestern GA...and
    the FL Panhandle

    Concerning...Tornado Watch 302...303...

    Valid 151908Z - 152015Z

    The severe weather threat for Tornado Watch 302, 303 continues.

    SUMMARY...The main severe threats across southern Alabama and the
    Florida Panhandle may be large hail and damaging winds. But, a
    tornado remains possible in the short term.

    DISCUSSION...A cluster of thunderstorms is ongoing across
    south-central AL at 1905Z. Multiple embedded supercells are also
    noted within this cluster based on recent reflectivity/velocity data
    from area radars. The airmass downstream of this activity remains
    moderately to strongly unstable, with MLCAPE generally ranging from
    2500-3500 J/kg. Strong deep-layer shear will allow for continued
    updraft organization, including supercells. Severe/damaging winds
    will probably be the main severe threat with the current cluster as
    it spreads southeastward into the FL Panhandle over the next hour or
    two. Some large hail will also be possible with any embedded
    supercell. Recent VWPs from KMOB/KEVX show low-level winds have
    generally veered to southwesterly. Still, modest
    veering/strengthening of the wind profile through the boundary layer
    is supporting around 100-150 m2/s2 of effective SRH. Some threat for
    a tornado may continue in the short term with any supercell that can
    be sustained. Given that the severe threat will continue past 20Z,
    either an extension in time for Tornado Watches 302/303 or new watch
    issuance will be needed.

    ..Gleason/Thompson.. 06/15/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_LFMs9o51xzHPl_U9p26r4SWXXCpXFhyUhZ6uyZTZWyWQpzeUtmDfp_UUE1Kcmi-XaqPfXXxG= iAESPLSs8ZViWTPOg4$ for graphic product...

    ATTN...WFO...TAE...MOB...

    LAT...LON 31478809 31568626 31018484 30608388 30378330 29858348
    30008419 29588493 29668540 30188593 30338658 30218743
    30238822 31178836 31478809=20


    =3D =3D =3D
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