• MESO: Mesoscale Discussion 1426

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Wed Jul 1 21:32:51 2026
    ACUS11 KWNS 012132
    SWOMCD
    SPC MCD 012132=20
    KSZ000-OKZ000-COZ000-012330-

    Mesoscale Discussion 1426
    NWS Storm Prediction Center Norman OK
    0432 PM CDT Wed Jul 01 2026

    Areas affected...Parts of western KS...far southeastern CO...and the
    far northern OK Panhandle

    Concerning...Severe potential...Watch likely=20

    Valid 012132Z - 012330Z

    Probability of Watch Issuance...80 percent

    SUMMARY...The risk of severe wind gusts and isolated large hail will
    increase over the next few hours. A watch is likely.

    DISCUSSION...To the west of a north/south-oriented dryline in
    southwest KS, boundary-layer cumulus is deepening within the
    hot/well-mixed air over southeastern CO and northeastern NM. As a
    subtle midlevel impulse over northeastern NM (evident in water-vapor
    imagery) overspreads the area, widely scattered high-based
    thunderstorms should evolve east-northeastward into a moist,
    diurnally unstable air mass over western KS and vicinity. The DDC
    18Z sounding sampled steep deep-layer lapse rates, which will be
    favorable for the development of robust outflow with a mix of
    loosely organized clusters and some supercell structures (aided by
    around 30-40 kt of effective shear). While severe gusts will be the
    main concern, isolated large hail will also be possible with the
    more separated updrafts initially. Current thinking is that a watch
    will be needed.

    ..Weinman/Thompson.. 07/01/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5lbAn046c7oSXXUmI6bxB_kFw8p5WMkVuUDx5pj5x3nC_HYSMre2U_dAjG2dK1sFea9zo8A6i= tVRguIcNBvXMwDSijc$ for graphic product...

    ATTN...WFO...DDC...GLD...AMA...PUB...

    LAT...LON 37880232 39170194 39640154 39770100 39680021 39449988
    38909974 38159980 37320035 36910108 36890198 37260235
    37880232=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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    * Origin: Capitol City Weather Station (1:2320/127)