• MESO: Mesoscale Discussion 0335

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Thu Apr 2 20:49:20 2026
    ACUS11 KWNS 022049
    SWOMCD
    SPC MCD 022048=20
    ILZ000-KYZ000-TNZ000-MOZ000-ARZ000-022245-

    Mesoscale Discussion 0335
    NWS Storm Prediction Center Norman OK
    0348 PM CDT Thu Apr 02 2026

    Areas affected...parts of northeastern Arkansas....southeastern Missouri...adjacent portions of western Kentucky and=20
    Tennessee...southern Illinois

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

    Valid 022048Z - 022245Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Scattered thunderstorm development is underway and
    probably will persist into early evening, with potential for
    intensification which could be accompanied by at least the risk for
    a tornado or two. It is not yet certain that a severe weather watch
    will be needed, but trends will continue to be monitored for this
    possibility.

    DISCUSSION...Thunderstorm development has recently been initiating
    in a broken band north of Poplar Bluff MO toward the Carbondale IL
    vicinity. This appears to be occurring along a corridor of better
    low-level moisture return and weak developing surface pressure fall
    axis, near the southern periphery of the mid-level cold pool
    associated with negatively tilted short wave troughing progressing
    across and northeast of the lower Missouri Valley.=20

    Destabilization has been sufficient to support only weak mixed-layer
    CAPE. This may not improve much through the remainder of the
    afternoon, except perhaps across parts of northeastern Arkansas into
    the Missouri Bootheel vicinity, based on latest Rapid Refresh
    guidance. Even so, this appears focused along the southeastern
    periphery of a strong southerly low-level jet axis, including 40-50
    kt speeds around 850 mb. It appears possible that low-level
    hodographs and thermodynamic profiles could become supportive of
    supercell structures capable of producing tornadoes. However, the
    extent of this potential remains unclear.

    ..Kerr/Hart.. 04/02/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_81RLKTCyOOjSbSxfervvTN_YCoY2lQVbdsANout1V3PUMtghKQhM1mS8a1x0zoMhquasWJPt= UhBwHF9wzH19bhDgkE$ for graphic product...

    ATTN...WFO...PAH...MEG...LSX...LZK...

    LAT...LON 38328857 37558852 35189028 35039105 36719087 38388970
    38328857=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)