• MESO: Mesoscale Discussion 1417

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Jun 23 19:35:16 2025
    ACUS11 KWNS 231935
    SWOMCD
    SPC MCD 231934=20
    IAZ000-MOZ000-KSZ000-NEZ000-232200-

    Mesoscale Discussion 1417
    NWS Storm Prediction Center Norman OK
    0234 PM CDT Mon Jun 23 2025

    Areas affected...portions of central Kansas into far southeast
    Nebraska and southwestern Iowa

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

    Valid 231934Z - 232200Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Some increase in severe potential may occur if more robust thunderstorm development can take place along the cold front. Strong
    to potentially severe wind gusts would be the main hazard.
    Convective trends are being monitored for the need of a Severe
    Thunderstorm Watch issuance.

    DISCUSSION...A line of thunderstorms has developed across eastern NE
    in a post-cold-frontal regime. Within the last hour, convection has
    tried to deepen along the KS/NE border, closer to the cold front,
    and where greater buoyancy resides. Deep-layer shear is modest at
    best (e.g. 30 kts), and is lagging the cold front. While vertical
    wind shear is limited, 7-8 C/km boundary-layer lapse rates atop 70+
    F surface dewpoints is contributing to 3000 J/kg MLCAPE in a weakly
    capped environment. While storms should be mainly pulse-cellular or multicellular, any cold-pool mergers that occur with the more
    intense storms may support strong to severe gusts. Convective trends
    are being monitored for further increases in coverage or intensity
    that would warrant a Severe Thunderstorm Watch issuance.

    ..Squitieri/Thompson.. 06/23/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9pBizmLsspDLotDsiJDh7zslkd0fV-5Ip48_kmEynSJx_ICcKxcZyozHVHDxkborSSCK-AFD_= qaRz7XAwUhX4MIheGM$ for graphic product...

    ATTN...WFO...DMX...EAX...OAX...TOP...ICT...GID...DDC...

    LAT...LON 39449947 41119694 41759606 42459456 42649365 42579272
    42389244 41829271 40969342 40439394 39979481 38929680
    38549805 38579874 38649923 38729943 39449947=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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