• MESO: Mesoscale Discussion 1463

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Fri Jul 3 06:47:09 2026
    ACUS11 KWNS 030647
    SWOMCD
    SPC MCD 030646=20
    IAZ000-NEZ000-SDZ000-030815-

    Mesoscale Discussion 1463
    NWS Storm Prediction Center Norman OK
    0146 AM CDT Fri Jul 03 2026

    Areas affected...Northeast NE into western IA and extreme southeast
    SD

    Concerning...Severe Thunderstorm Watch 444...

    Valid 030646Z - 030815Z

    The severe weather threat for Severe Thunderstorm Watch 444
    continues.

    SUMMARY...Damaging wind and isolated hail remain possible overnight.

    DISCUSSION...Persistent convection has remained relatively
    disorganized thus far across parts of northeast NE into western IA.
    However, some east-southeastward propagation has recently been noted
    west of Sioux City, which may be an indication of expanding outflow
    and a gradually strengthening cold pool. If this trend continues, a
    somewhat more organized storm cluster may evolve and move along or
    just north of a front draped across western IA, with some uptick in damaging-wind potential. Otherwise, MUCAPE of above 2000 J/kg will
    continue to support isolated hail potential with the strongest
    embedded updrafts overnight.

    ..Dean.. 07/03/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6cu_7_vMnr5nuhkeST8gYRB21BKqixF4ef8ECCx_h_QKy_1537xTfDg4puU5LnlBQit70sX8u= MWbCFC8E6RxZClh3yw$ for graphic product...

    ATTN...WFO...DMX...FSD...OAX...

    LAT...LON 42919680 42759515 42589422 42399386 42139381 41809437
    41749470 41649533 41609626 41699680 41869767 42379771
    42569769 42919680=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 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 Weather Station (1:2320/127)