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  • MESO: Mesoscale Discussion 1316

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Thu Jun 25 20:46:47 2026
    ACUS11 KWNS 252046
    SWOMCD
    SPC MCD 252046=20
    WYZ000-252245-

    Mesoscale Discussion 1316
    NWS Storm Prediction Center Norman OK
    0346 PM CDT Thu Jun 25 2026

    Areas affected...Central to southeast Wyoming

    Concerning...Severe Thunderstorm Watch 391...

    Valid 252046Z - 252245Z

    The severe weather threat for Severe Thunderstorm Watch 391
    continues.

    SUMMARY...The potential for severe winds will continue into
    southeast Wyoming over the next few hours. Wind gusts between 60-70
    mph appear possible.

    DISCUSSION...A loosely organized MCS continues to push
    east/southeast across central WY and has a history of producing wind
    gusts mostly between 35-55 mph. Over the past half hour, GOES IR
    imagery has shown steadily cooling cloud-top temperatures, implying
    a slow strengthening trend as the downstream air mass continues to
    warm and destabilize. Consequently, outflow wind speeds with the MCS
    may increase into the 60-70 mph range over the next couple of hours
    as the band moves into southeast WY. Based on recent velocity
    imagery, downstream low-level lapse rates, and time-lagged HRRR/RRFS
    ensembles, the greatest wind threat will most likely emerge between
    the I-80 to I-25 corridors over the next 1-2 hours before the MCS
    begins to push into a cooler, more stable air mass in place along
    the WY/NE border.

    ..Moore.. 06/25/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!59F8A9JGssBTyLAYXIZ6n4Y3ot8hlt0ShFlyP3W_G8bhsLNOIoq7galEAy6ajU8qJFbCTswjn= P1GpV47d9pXIw3R2WA$ for graphic product...

    ATTN...WFO...CYS...RIW...

    LAT...LON 41130628 41330780 41490822 41620849 41880834 42090791
    42380756 42730727 43150697 43370658 43490612 43440459
    42650458 41970498 41570535 41310573 41130628=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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