• MESO: Mesoscale Discussion 0691

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sunday, May 10, 2026 02:22:32
    ACUS11 KWNS 100222
    SWOMCD
    SPC MCD 100221=20
    OKZ000-TXZ000-100415-

    Mesoscale Discussion 0691
    NWS Storm Prediction Center Norman OK
    0921 PM CDT Sat May 09 2026

    Areas affected...western into southern Oklahoma

    Concerning...Severe Thunderstorm Watch 194...

    Valid 100221Z - 100415Z

    The severe weather threat for Severe Thunderstorm Watch 194
    continues.

    SUMMARY...Severe gusts to around 60 mph and isolated hail remains
    possible from northwest into south-central Oklahoma. Depending on
    convective trends, a new watch may be considered.

    DISCUSSION...The initial supercells which produced large hail have
    decreased in intensity as they continue eastward across southwest
    and toward south-central OK, though still capable of hail and severe
    gusts. Loss of heating / increasing inhibition are negatively
    impacting these storms. However, the air mass is more moist with
    southward extend toward the Red River, with PWAT of 1.00-1.25".
    Given south/southeast low-level flow, this may at least partially
    counteract the negative influence of a cooling boundary layer. Even
    if new development is unlikely, this environment may sustain the
    ongoing cells, with potential for downstream severe gusts or hail
    over 1.00".

    To the north, a line of storms continues to push southeastward out
    of northwest OK, where a wind gust of 66 mph was measured at KAVK.
    This system will likely persist to some degree as it translates
    south/southeast along the theta-e gradient which currently extends
    through central OK. Given the instability axis remains from western
    through southern OK, development along southwest flanks are
    preferred.

    ..Jewell.. 05/10/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6HXaJnuTw_CEz32LxHfikkJXEnNjr-CRNJU40sib0ecgUmHbh00xKdZKoT8AmJG7A57Yf_VWl= 3mIBamCeFY7ZWh7_8g$ for graphic product...

    ATTN...WFO...TSA...FWD...OUN...

    LAT...LON 35509993 35989970 36129921 36379885 36729865 36689820
    36389802 36009779 35379720 35009660 34709599 34339578
    34139590 33949609 33839651 33909777 34579936 34939975
    35509993=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 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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