• MESO: Mesoscale Discussion 1760

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jul 23 14:29:55 2025
    ACUS11 KWNS 231429
    SWOMCD
    SPC MCD 231429=20
    WIZ000-MNZ000-SDZ000-231630-

    Mesoscale Discussion 1760
    NWS Storm Prediction Center Norman OK
    0929 AM CDT Wed Jul 23 2025

    Areas affected...central MN

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

    Valid 231429Z - 231630Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Strong to severe thunderstorm potential may increase
    through the morning. Strong, locally damaging wind gusts will be the
    main hazard with storms into the afternoon.

    DISCUSSION...A surface front draped across north-central MN into
    central SD will continue to develop south/southeast this morning.
    Thunderstorms ahead of this boundary across MN have shown some
    indication of intensification as the downstream airmass warms into
    the upper 70s to low 80s late this morning. Convective inhibition is
    rapidly diminishing, and this may allow for gradual strengthening as
    the boundary pushes southeast. Furthermore, severe storms in eastern
    SD may eventually organize and develop eastward into parts of MN.
    Vertical shear is weaker across central MN compared to some points
    north and west. Nevertheless, the 12z RAOB from MPX showed around
    1500 J/kg MLCAPE with some drier air between 850-700 mb and modestly
    steep midlevel lapse rates. This may support strong to severe gusts.

    Timing and convective evolution through the remainder of the morning
    into early afternoon is uncertain, but a severe thunderstorm watch
    may eventually be needed.

    ..Leitman/Smith.. 07/23/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!57uX0-CrfPtvrD7ss2PSv4jwksSsqwwdvXrGP6gVb9FIuZ-Vt-XTZhR6VQYuv6xXZRODagHSg= urZm7mKez-EbR-wbBc$ for graphic product...

    ATTN...WFO...DLH...ARX...MPX...FSD...ABR...

    LAT...LON 45349617 46519394 46639309 46359218 45559201 44569206
    44259280 44109424 44189532 44439624 44749647 45009638
    45349617=20

    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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