• MESO: Mesoscale Discussion 1782

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 25 22:11:07 2025
    ACUS11 KWNS 252210
    SWOMCD
    SPC MCD 252209=20
    NEZ000-SDZ000-COZ000-WYZ000-252345-

    Mesoscale Discussion 1782
    NWS Storm Prediction Center Norman OK
    0509 PM CDT Fri Jul 25 2025

    Areas affected...portions of eastern Colorado into western Nebraska
    and southwestern South Dakota

    Concerning...Severe potential...Watch unlikely=20

    Valid 252209Z - 252345Z

    Probability of Watch Issuance...20 percent

    SUMMARY...A few of the stronger storms may produce isolated severe
    gusts and perhaps hail through the afternoon and early evening.

    DISCUSSION...Relatively isolated thunderstorms have developed off of
    the higher terrain, from eastern CO into western NE and southwestern
    SD, driven by afternoon peak heating and orographic lift amid eroded
    MLCINH. These storms may meander eastward over the next few hours,
    where surface temperatures/dewpoints in the 90s/50s, beneath 8+ C/km tropospheric lapse rates, support 1500 J/kg MLCAPE. Vertical wind
    shear is weak, and the weak forcing also suggests that storms should
    remain isolated, so the severe wind/hail risks should be sparse at
    best.

    ..Squitieri/Mosier.. 07/25/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-318mgdBNwP5XiMF2V7TUNHQI4uuS7sI7nt25O9Xav5TylANOwG2YnbRSqvzmsxSz3HTExV9v= f8-znLT4rzguHYdXyI$ for graphic product...

    ATTN...WFO...LBF...UNR...GLD...PUB...BOU...CYS...

    LAT...LON 39580488 40790486 41070484 41800431 43490344 44250342
    44490319 44380240 43530196 42370195 40760250 39360296
    39060315 38940351 38970422 39580488=20

    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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