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  • MESO: Mesoscale Discussion 1342

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Fri Jun 26 23:52:29 2026
    ACUS11 KWNS 262352
    SWOMCD
    SPC MCD 262352=20
    NEZ000-COZ000-270145-

    Mesoscale Discussion 1342
    NWS Storm Prediction Center Norman OK
    0652 PM CDT Fri Jun 26 2026

    Areas affected...parts of eastern Colorado...western Nebraska and
    adjacent portions of the high plains

    Concerning...Severe Thunderstorm Watch 398...

    Valid 262352Z - 270145Z

    The severe weather threat for Severe Thunderstorm Watch 398
    continues.

    SUMMARY...Widely scattered strong storms posing a risk for severe
    hail and wind will probably continue through 7-8 PM MDT, before
    tending to diminish across much of the region.

    DISCUSSION...Isolated to widely scattered strong thunderstorm
    development continues to propagate into the plains, in the presence
    of modest, but sheared, 20-25 kt southwesterly deep-layer mean flow.
    This is where a seasonably moist boundary layer has become
    characterized by moderate CAPE within a narrow corridor centered
    near the Kansas/Nebraska state border into western Nebraska.=20
    Increasingly warm elevated mixed-layer air continues to advect
    across the high plains, however, and the onset of boundary-layer
    cooling will begin to increase inhibition through 00-02Z. Height
    rises further aloft are forecast to only slowly weaken and shift
    eastward through late evening.=20=20

    Stronger thunderstorm development currently near Scottsbluff NE
    seems to have best potential to be maintained beyond the next couple
    of hours, as low-level wind fields and shear strengthen this evening
    in closer proximity to the deepening surface cyclone across Wyoming.

    ..Kerr.. 06/26/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5QQRSehP3yNF2_vaWFDQ2O34gz1lzTuHuTcyJUhLaU3rnxcNvxn_GDpGMFKybekQ6Nb7s2OL5= nYNVswIXQNJV5MTDDg$ for graphic product...

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

    LAT...LON 42870370 42900196 42220169 41160198 40590207 39610229
    37990228 37040290 38490372 39720339 40990373 42870370=20

    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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