• MESO: Mesoscale Discussion 0952

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat May 24 18:17:07 2025
    ACUS11 KWNS 241817
    SWOMCD
    SPC MCD 241816=20
    ALZ000-MSZ000-LAZ000-ARZ000-241945-

    Mesoscale Discussion 0952
    NWS Storm Prediction Center Norman OK
    0116 PM CDT Sat May 24 2025

    Areas affected...far southern AR...northern LA...central MS and
    west-central AL

    Concerning...Severe potential...Watch possible=20

    Valid 241816Z - 241945Z

    Probability of Watch Issuance...40 percent

    SUMMARY...The ongoing MCS over parts of the ArkLaTex may intensify
    and spread eastward. Additional storms may also pose a risk for
    damaging winds and hail. A new WW is possible, though timing is
    uncertain.

    DISCUSSION...Along the eastern edge of WW316, a linear cluster of
    thunderstorms across far southern AR near the LA border has begun to
    interact with more unstable air south of a roughly east-west
    oriented baroclinic zone. Along and south of the boundary, mid 80s F temperatures and robust surface moisture were contributing to
    2000-3000 J/kg of MLCAPE. As the cold pool interacts with this air
    mass, some re-intensification of the ongoing storms is expected.
    Additional development has also been noted along a preceding
    confluence line across northern LA and along the boundary itself
    across MS and AL. While there remains some uncertainty on the
    evolution of these individual features, the general environment and
    observation trends suggest one or more clusters/lines of storms
    should emerge and spread eastward along the boundary this afternoon.
    Given the degree of instability and moderate deep-layer flow aloft,
    damaging winds appear probable with any deeper cold pools/forward
    propagating clusters that develop and maintain themselves. Some
    isolated hail may also occur with relatively steep mid-level lapse
    rates and large buoyancy. Convective trends will continue to be
    monitored, but a weather watch appears possible this afternoon.

    ..Lyons/Guyer.. 05/24/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_mxYTWFyKAbmJI6DEb5-M-dES4DBcIAKnZdgPjfiFMuvYBTwTys1XXYNHJD0nV15N5JSPSg6X= g5CFsHpqGDZ1F0hawE$ for graphic product...

    ATTN...WFO...BMX...MOB...MEG...JAN...LZK...SHV...

    LAT...LON 31858782 32838709 33798750 33999048 33959062 33539099
    33199352 32219365 31288946 31858782=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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