• MESO: Mesoscale Discussion 2025

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Sep 1 19:02:23 2025
    ACUS11 KWNS 011902
    SWOMCD
    SPC MCD 011901=20
    KSZ000-OKZ000-TXZ000-012130-

    Mesoscale Discussion 2025
    NWS Storm Prediction Center Norman OK
    0201 PM CDT Mon Sep 01 2025

    Areas affected...Southwest/south-central KS into
    northwest/north-central OK and the far northeast TX Panhandle

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

    Valid 011901Z - 012130Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Strong to locally severe storms will be possible this
    afternoon into the early evening, with a threat of isolated hail and
    localized strong to severe gusts.

    DISCUSSION...Convective initiation has recently been noted near
    Dodge City, in the vicinity of a weak surface trough/low. Diurnal
    heating of a relatively moist airmass has resulted in the
    development of moderate buoyancy, with MLCAPE increasing into the
    1000-1500 J/kg range where stronger heating is underway. Weak
    midlevel lapse rates (sampled by the 12Z DDC and OUN soundings) may
    tend to slow updraft intensification, but with time, scattered
    thunderstorm development is expected within a weakly capped
    environment, as a mid/upper-level shortwave trough moves
    southeastward across central/eastern KS.=20

    A belt of moderate north-northwesterly midlevel flow associated with
    the approaching shortwave trough will overspread
    southwest/south-central KS into northwest/north-central OK with
    time, resulting in elongated hodographs and sufficient deep-layer
    shear for storm organization. Multicell clusters and possibly a
    supercell or two may evolve within this regime. The weak midlevel
    lapse rates will tend to limit the magnitude of the hail threat, but
    isolated severe hail will be possible if any supercells can be
    sustained. Steepening of low-level lapse rates will support some
    potential for localized strong to severe gusts, especially if any
    organized clustering evolves with time.

    ..Dean/Gleason.. 09/01/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8bSzrt6nUB5xWWKDNU6F5uuZV78Lvm19zE-4U8PCiCCcx4Lmv0e5ispAx5G7BL5hU2V4yGdS7= MmIw1jwKUeEx4Y-YxU$ for graphic product...

    ATTN...WFO...ICT...OUN...DDC...AMA...

    LAT...LON 38160061 38349841 38319703 37519697 37099722 36049783
    35809823 35779916 35880025 36210043 38160061=20

    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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