• MESO: Mesoscale Discussion 2270

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Nov 15 21:03:16 2023
    ACUS11 KWNS 152103
    SWOMCD
    SPC MCD 152102=20
    FLZ000-152330-

    Mesoscale Discussion 2270
    NWS Storm Prediction Center Norman OK
    0302 PM CST Wed Nov 15 2023

    Areas affected...the Florida Keys

    Concerning...Severe potential...Watch unlikely=20

    Valid 152102Z - 152330Z

    Probability of Watch Issuance...20 percent

    SUMMARY...An isolated tornado/tornadic waterspout threat continues
    across the Florida Keys area. Given the sparse and spatially
    confined nature of the severe threat, a WW issuance is not expected.

    DISCUSSION...Strong thunderstorms, with several showing brief bouts
    of low-level rotation, continue along and just south of the FL Keys
    in proximity to a quasi-stationary surface boundary. To the
    southwest of Key West, a small bow-echo signature continues to surge
    quickly to the southeast with strong gust potential, and may
    overturn the airmass/reduce instability along its way. Ahead of this
    bow-echo feature, an MCV has materialized along and just north of
    the aforementioned surface boundary and is likely benefiting from
    locally stronger low-level shear. Semi-discrete cells within and
    ahead of this MCV may encounter locally backed low-level
    winds/enlarged hodographs, and an isolated supercellular/tornadic
    waterspout remains possible with any of the stronger storms.

    ..Squitieri.. 11/15/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9oo1wilxshCZEniGw6S3YEjVcQ7686bZlsNWPyxgtXqpmOaprP7DNSyBSfZFro9RckXyVrB-5= fHQtkIrPH-7u_0lfy4$ for graphic product...

    ATTN...WFO...MFL...KEY...

    LAT...LON 24458230 24958151 25228075 25427983 25307945 24877935
    24417951 24108018 23998159 24028170 24458230=20


    =3D =3D =3D
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