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  • MESO: Mesoscale Discussion 1334

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Fri Jun 26 20:13:57 2026
    ACUS11 KWNS 262013
    SWOMCD
    SPC MCD 262013=20
    COZ000-NEZ000-WYZ000-262115-

    Mesoscale Discussion 1334
    NWS Storm Prediction Center Norman OK
    0313 PM CDT Fri Jun 26 2026

    Areas affected...portions of northeastern Colorado...southeastern
    Wyoming...and far western Nebraska

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

    Valid 262013Z - 262115Z

    Probability of Watch Issuance...80 percent

    SUMMARY...A few thunderstorms with large hail and severe gusts are
    possible this afternoon across portions of northeastern Colorado,
    southeastern Wyoming, and far western Nebraska. A watch may be
    needed to cover this threat.

    DISCUSSION...A large upper trough is in place across the
    northwestern CONUS with a subtle jet pushing eastward over the
    central Rockies this afternoon. Storms are preferentially developing
    along a couple convergence boundaries across portions of the High
    Plains. The flow enhancement from the jet results in lengthened
    hodographs, which should result in enough shear for at least a few
    supercells.

    With any supercells that do form, a few instances of large hail are
    possible due to the straight hodographs and relatively low freezing
    levels. Storms may cluster as the afternoon progresses, which may
    result in a threat for severe gusts due to the dry boundary layer
    and modest low- and mid-level flow. One limiting factor for wind is
    some residual inhibition across parts of the High Plains, though
    this is expected to erode with continued strong heating. A watch
    will likely be needed to cover this threat.

    ..Supinie/Guyer.. 06/26/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6vVprWEZqJ8j1Fsm7CNhD8wyv_6UUaWR_tuxPLwCzVKgYIplFfFFj9yl7gCNRebWW9OKAccG-= ZAFW4mFfVHrSXxfn9c$ for graphic product...

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

    LAT...LON 40180486 41600487 42170478 42370419 42060336 40850299
    39610286 38200360 38100442 38410473 40180486=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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