• MESO: Mesoscale Discussion 0381

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sat Apr 11 18:57:03 2026
    ACUS11 KWNS 111856
    SWOMCD
    SPC MCD 111856=20
    KSZ000-NEZ000-112130-

    Mesoscale Discussion 0381
    NWS Storm Prediction Center Norman OK
    0156 PM CDT Sat Apr 11 2026

    Areas affected...parts of central and northeastern Kansas...south
    central and southeastern Nebraska and adjacent portions of
    northwestern Missouri

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

    Valid 111856Z - 112130Z

    Probability of Watch Issuance...60 percent

    SUMMARY...Widely scattered to scattered strong to severe storm
    development is likely to gradually develop through 4-6 PM CDT. This
    may include a couple of supercell structures with potential to
    produce tornadoes, some severe hail and localized strong surface
    gusts.

    DISCUSSION...Low-level moistening and insolation are contributing to boundary-layer destabilization either side of a remnant convective
    outflow boundary, which is shifting north of the Interstate 70
    corridor toward the central/eastern Nebraska and Kansas state border
    vicinity. This appears to be occurring beneath 30-35+ kt southerly
    850 mb flow, which may undergo further strengthening through late
    afternoon.

    Within the better instability to the south of the outflow boundary,
    widely scattered thunderstorm development is already initiating
    downstream of a northeastward migrating MCV currently to the
    east/southeast of Dodge City, with deepening convective development
    also evident along the boundary, near Manhattan. With further
    insolation and weakening of inhibition, aided by weak large-scale
    ascent associated with warm advection, at least widely scattered
    intensifying thunderstorm development seems probable through late
    afternoon.

    Despite somewhat modest flow evident in forecast soundings around
    the 500 mb level, sizable clockwise curved low-level hodographs
    appear conducive to the development of supercell structures with
    potential to produce tornadoes, particularly near and just north of
    the retreating outflow boundary, and perhaps in close proximity to
    the the MCV. Otherwise, marginally severe hail and localized strong
    downbursts may not be out of the question in stronger cells.

    ..Kerr/Mosier.. 04/11/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!45s_fAqzP1LxQ5GnxtuFpS9C7kIzcuoG9HO3DGQQ7y9Oi7jfXUa2FMaVx14KKX7sDnfiDxS7L= gJB3hsZNwM3YlLayaw$ for graphic product...

    ATTN...WFO...EAX...OAX...TOP...ICT...GID...DDC...

    LAT...LON 39709929 40459797 40229594 39389552 38769661 37439682
    37709872 38679889 39269933 39709929=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
    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 Online (1:2320/107)