• MESO: Mesoscale Discussion 1489

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Sat Jul 4 15:09:51 2026
    ACUS11 KWNS 041509
    SWOMCD
    SPC MCD 041509=20
    MOZ000-KSZ000-OKZ000-041745-

    Mesoscale Discussion 1489
    NWS Storm Prediction Center Norman OK
    1009 AM CDT Sat Jul 04 2026

    Areas affected...southeast Kansas into western Missouri

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

    Valid 041509Z - 041745Z

    Probability of Watch Issuance...40 percent

    SUMMARY...A cluster of strong to severe storms may persist and
    eventually intensify further as it develops from Kansas into
    Missouri today. Damaging wind gusts are the most probable threat.

    DISCUSSION...The remnants of an overnight MCS continues to push
    across KS this morning, with sporadic severe gusts still being
    measured. This eastward surge is now interacting with a leading zone
    of thunderstorms over northeast KS which are mostly elevated above
    cooler outflow.

    Recent radar trends do show a relatively stronger area of storms
    moving toward the Emporia KS area, which is right along the
    instability gradient. This gradient extends eastward into
    west-central MO, and a very moist and unstable air mass exists to
    the south. The 12Z SGF sounding show relatively steep midlevel lapse
    rates, and when modified for current surface conditions over
    southeast KS, yields over 4000 J/kg MUCAPE.=20

    Although low-level southerly winds are forecast to remain weak,
    satellite imagery shows strong heating ahead of the ongoing
    activity, which will further destabilize the air mass. As such, it
    appears likely that the MCS will persist, and a watch may be needed
    if further strengthening occurs.

    ..Jewell.. 07/04/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5JJzLm9Vx_yW9A2F5BDoFLC0Z7sg5RgjbmoHS4OECEijRqx_u7c6Zk4mwaZVNXkvKHsAsU0li= nSBRTtm8cgTlNrjYQM$ for graphic product...

    ATTN...WFO...SGF...EAX...TSA...TOP...ICT...

    LAT...LON 37419682 37779647 37999636 38089591 38329507 38609439
    38849387 38769315 38439289 37739285 37239313 36959391
    36869482 36959594 37139676 37419682=20

    MOST PROBABLE PEAK WIND GUST...55-70 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)