• MESO: Mesoscale Discussion 2299

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Dec 2 03:39:13 2023
    ACUS11 KWNS 020339
    SWOMCD
    SPC MCD 020338=20
    ALZ000-MSZ000-LAZ000-020445-

    Mesoscale Discussion 2299
    NWS Storm Prediction Center Norman OK
    0938 PM CST Fri Dec 01 2023

    Areas affected...Southeast LA and coastal MS

    Concerning...Tornado Watch 713...

    Valid 020338Z - 020445Z

    The severe weather threat for Tornado Watch 713 continues.

    SUMMARY...The threat for a tornadic supercell or two should increase
    over the next couple hours across southeast LA, including the New
    Orleans metro area.

    DISCUSSION...Long-lived convective cluster across south-central LA
    will likely continue east-northeast into the early morning hours
    across southeast LA and coastal MS. An embedded supercell has
    recently intensified over the Assumption Parish vicinity, and
    additional supercell development will be possible to the southwest
    of this storm amid strong mid to upper-level speed shear. Low-level
    hodographs are also in the process of enlarging, albeit from
    initially small curvature, and should continue to do so for the next
    several hours. Time-series of the TMSY wind profile confirms 0-3 km
    SRH has steadily held above 250 m2/s2 and a longer-lived supercell
    may evolve out of the Assumption Parish storm as it approaches the
    greater New Orleans/Lake Pontchartrain area through midnight.

    ..Grams.. 12/02/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9Qq0DPY54DPHHrr-D1ApEdnQEDM5m3r1sdlwqr0EtgbCk3UzwQ0HFa5wqjQoc_iQmt0esQ6Et= 2ZjkotBxfxo3xWPuW8$ for graphic product...

    ATTN...WFO...MOB...LIX...LCH...

    LAT...LON 29989107 30249038 30508962 30778897 30738857 30598830
    30088845 30078864 29938889 29718943 29419036 29249078
    29359127 29649153 29879142 29989107=20


    =3D =3D =3D
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