• MESO: Mesoscale Discussion 0643

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sun May 5 20:15:06 2024
    ACUS11 KWNS 052015
    SWOMCD
    SPC MCD 052014=20
    ARZ000-LAZ000-TXZ000-OKZ000-052215-

    Mesoscale Discussion 0643
    NWS Storm Prediction Center Norman OK
    0314 PM CDT Sun May 05 2024

    Areas affected...Northeast TX/southeast OK into northern LA and southern/central AR

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

    Valid 052014Z - 052215Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Some threat for a brief tornado or two could evolve late
    this afternoon.

    DISCUSSION...Clearing in the wake of earlier convection is allowing
    for airmass recovery across northern LA and southern AR. Persistent
    low-level theta-e advection in advance of a weak surface low across
    northeast TX may allow for storm redevelopment later this afternoon,
    within an effective warm frontal zone. With some midlevel drying
    expected in the wake of the ejecting shortwave trough across AR, the
    number and intensity of storms later this afternoon remains
    uncertain. However, increasing moisture/instability and relatively
    favorable low-level shear/SRH (as noted on the KSHV and KLZK VWPs)
    could support brief tornado potential with any longer-lived cells
    late this afternoon into early evening. Isolated hail and gusty
    winds will also be possible.=20

    At this time, the threat is expected to remain rather marginal and
    isolated, rendering the need for watch issuance uncertain. Trends
    will be closely monitored for the development of a supercell or two
    later this afternoon.

    ..Dean/Smith.. 05/05/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!66aanMzmjMOLTM0kZkBEjdqprqpUd9HXK45q_0rlLWngd3wQdBs-XZkK_QlqDf4TN9KnCe-XX= doNNRhyozWKcoIrlKY$ for graphic product...

    ATTN...WFO...JAN...LZK...SHV...TSA...

    LAT...LON 32409427 32499497 33299518 34129536 34329461 34869290
    34099140 33459123 32979126 32149166 31889191 31709220
    31829266 31979300 32149349 32309394 32409427=20


    =3D =3D =3D
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