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  • MESO: Mesoscale Discussion 1485

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Sat Jul 4 02:38:17 2026
    ACUS11 KWNS 040238
    SWOMCD
    SPC MCD 040237=20
    NEZ000-KSZ000-COZ000-040430-

    Mesoscale Discussion 1485
    NWS Storm Prediction Center Norman OK
    0937 PM CDT Fri Jul 03 2026

    Areas affected...Central and Southwest Nebraska...Far Northeast
    Colorado

    Concerning...Severe Thunderstorm Watch 450...

    Valid 040237Z - 040430Z

    The severe weather threat for Severe Thunderstorm Watch 450
    continues.

    SUMMARY...A threat for severe wind gusts and isolated large hail
    will likely continue over the next few hours. As storms move
    eastward into southwest Nebraska, a watch extension in area may be
    needed.

    DISCUSSION...The latest radar imagery shows a couple of intense
    storms over the central High Plains. The first storm is in
    west-central Nebraska with the second in far northeast Colorado.
    These storms are located near a shortwave trough evident on water
    vapor imagery, which is providing large-scale ascent helping to
    sustain the storms. Ahead of the storms, a moderately unstable
    airmass is located across much of southern and central Nebraska,
    where the RAP has MLCAPE in the 2000 to 3500 J/kg range. In
    addition, the North Platte WSR-88D VWP has 0-6 km shear around 40
    knots. This will support supercell maintenance late this evening.
    Supercells should be capable of isolated large hail and severe wind
    gusts. As the storms in far northeast Colorado move eastward into
    southwest Nebraska later this evening, a watch extension in area may
    need to be considered.

    ..Broyles.. 07/04/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_md3MVHZAumQbEZEv95z30XdZknJnEI63AFgCrSxnDW2r3lLMey8azrCWFegjz5igWoFrpMQf= 0iwZojbDOCKCoGfzng$ for graphic product...

    ATTN...WFO...GID...LBF...GLD...BOU...

    LAT...LON 41939990 42170055 42240119 42110170 41550200 41050240
    40760285 40620311 40180322 40030297 39960257 39960198
    40120098 40460007 40859965 41169949 41589956 41939990=20

    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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    * Origin: Capitol City Weather Station (1:2320/127)