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  • MESO: Mesoscale Discussion 0555

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Mon Apr 27 00:41:04 2026
    ACUS11 KWNS 270040
    SWOMCD
    SPC MCD 270040=20
    ARZ000-MOZ000-OKZ000-KSZ000-270145-

    Mesoscale Discussion 0555
    NWS Storm Prediction Center Norman OK
    0740 PM CDT Sun Apr 26 2026

    Areas affected...Far Southeast Kansas...Northeast Oklahoma

    Concerning...Tornado Watch 150...152...

    Valid 270040Z - 270145Z

    The severe weather threat for Tornado Watch 150, 152 continues.

    SUMMARY...A potential for strong tornadoes will exist across parts
    of far southeast Kansas over the next hour. Tornado development may
    also occur in northeast Oklahoma.

    DISCUSSION...A tornadic storm is currently ongoing in far southeast
    Kansas on the nose of a mesoscale 30 to 35 knot low-level jet, which
    is analyzed by the RAP. This feature should be maintained or
    gradually strengthen over the next hour, which will result in a
    continued tornado threat. The WSR-88D VWP currently shows gradually
    veering winds in the lowest 2 km. This is resulting in looped
    hodograph with 0-3 km storm-relative helicity near 450 m2/s2.
    Low-level shear is likely even stronger near the low-level jet. For
    this reason, a strong tornado will be possible over the next hour or
    so in far southeast Kansas.

    In Northeast Oklahoma, another well-developed supercell is ongoing.
    This storm will move toward the low-level jet over the next hour,
    making tornado development possible.

    ..Broyles/Leitman.. 04/27/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5HH-RZOYysK2zjHUXNEJF1CGVSL2rK4K0nO5CDHfB7vj0wOH7RgKhofbyp3p-MXX5c7UR2ptz= 7ZbTRKWUOdxGpAJMKs$ for graphic product...

    ATTN...WFO...SGF...TSA...ICT...OUN...

    LAT...LON 37469590 37209646 36989675 36629672 36269544 36159452
    36589421 37149422 37409480 37499553 37469590=20

    MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/107)