• MESO: Mesoscale Discussion 0827

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Fri May 22 20:10:21 2026
    ACUS11 KWNS 222010
    SWOMCD
    SPC MCD 222009=20
    TXZ000-OKZ000-222215-

    Mesoscale Discussion 0827
    NWS Storm Prediction Center Norman OK
    0309 PM CDT Fri May 22 2026

    Areas affected...portions of West Texas...the Texas Panhandle and
    far southwestern Oklahoma

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

    Valid 222009Z - 222215Z

    Probability of Watch Issuance...60 percent

    SUMMARY...Thunderstorm initiation is likely over the next several
    hours across portions of far eastern NM and West TX. A mix of multi
    cells and transient supercells may pose a risk for damaging winds
    and hail. A WW is possible.

    DISCUSSION...As of 20 UTC, regional visible imagery showed a
    building cumulus field across portions of far eastern NM, West TX
    and the southern TX Panhandle. Towers within this cu field have
    steadily deepened indicating erosion of remaining inhibition
    shortly. Amid strong diurnal heating and weak ascent from a
    subtropical disturbance aloft, area RAP and Observed AMA soundings
    show surface temperatures now warming into the upper 80s to low 90s
    F, which will exceed convective temperature in the next couple of
    hours. This should support scattered thunderstorm development this
    afternoon.

    While a gradient in surface dewpoints is evident in area obs, steep
    low and mid-level lapse rates are supporting sufficient buoyancy
    (1000-2000 J/kg of MLCAPE) for strong updrafts. Deep-layer shear is
    not overly large, generally 20-30 kt. This suggests a mixed mode of
    multi cell clusters and transient supercells. Hail will be possible
    with the stronger storms. Numerous storm interactions and the modest
    low-level moisture favoring stronger downdrafts and cold pool
    development should also result in fairly rapid upscale growth into
    one or more clusters or an MCS. Thus, the risk for damaging winds is
    also possible, and expected to increase with time.

    Current expectations are for storms to develop withing the warmer
    and more well-mixed air mass over West TX and the southern Panhandle
    before expanding in coverage farther east. Additional CI remains
    possible along the southward moving cold front farther north.
    However, this has become less certain in recent CAM runs. The severe
    risk should gradually increase this afternoon and evening with a WW
    possible in the next couple of hours.

    ..Lyons/Hart.. 05/22/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!61F-UQgMoGsCPDp7ODUO436VAPUVECCDU2S3Ss4F859yMr2nkaPvC-epY1UBqtgySi9Ma4i65= X9UENw8QlQR-6EZIxM$ for graphic product...

    ATTN...WFO...OUN...SJT...LUB...AMA...MAF...

    LAT...LON 33170221 34080303 35660128 35729976 34819947 34439941
    33169947 32609951 31539963 31160007 30890080 30800162
    31080186 31530183 32640199 33170221=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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