• MESO: Mesoscale Discussion 1486

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Sat Jul 4 05:51:18 2026
    ACUS11 KWNS 040551
    SWOMCD
    SPC MCD 040550=20
    KSZ000-NEZ000-COZ000-040645-

    Mesoscale Discussion 1486
    NWS Storm Prediction Center Norman OK
    1250 AM CDT Sat Jul 04 2026

    Areas affected...Parts of northeast CO into northwest KS and far
    southwest NE

    Concerning...Severe potential...Watch possible=20

    Valid 040550Z - 040645Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Isolated hail and localized strong to severe gusts will be
    possible into the early morning.

    DISCUSSION...Storms have increased in coverage and intensity late
    tonight across parts of northeast CO, likely aided by warm advection
    in the 800-700 mb layer, to the north of a front draped from
    east-central CO into northwest KS. Moist low-level easterly flow
    beneath steep midlevel lapse rates is resulting in MUCAPE of
    near/above 1500 J/kg, with effective bulk shear likely around 30-40
    kt for convection rooted around 800 mb. This environment is
    supportive of at least transient storm organization, though rather
    weak upper-level flow will likely result in a complex storm mode.
    This could temper the longevity of the hail threat with any
    particular storm, though the environment otherwise supports hail
    approaching 2 inches in diameter. Localized severe gusts will also
    be possible in association with the strongest downdrafts and any
    larger-scale outflows.

    ..Dean/Mosier.. 07/04/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-lqE3qyki5jt9nu5GgsA5KxJYmYSUEEEa3VgdEzzAKpc46W891paoWM_ivn1KHdKg-e92ilo0= b1ZEcPn4qyCTw9UEQI$ for graphic product...

    ATTN...WFO...LBF...DDC...GLD...PUB...BOU...

    LAT...LON 39200440 40230355 40410199 40290038 39430011 38940018
    38690038 38590081 38960223 39000298 38990351 38960415
    39200440=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    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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    * Origin: Capitol City Weather Station (1:2320/127)