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  • MESO: Mesoscale Discussion 0407

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Mon Apr 13 22:47:49 2026
    ACUS11 KWNS 132247
    SWOMCD
    SPC MCD 132246=20
    WIZ000-MNZ000-140015-

    Mesoscale Discussion 0407
    NWS Storm Prediction Center Norman OK
    0546 PM CDT Mon Apr 13 2026

    Areas affected...Portions of Coulee region into central Wisconsin

    Concerning...Tornado Watch 103...

    Valid 132246Z - 140015Z

    The severe weather threat for Tornado Watch 103 continues.

    SUMMARY...A favorable corridor for tornadoes will exist along the
    warm front over the next 2-3 hours. As additional storms form this
    evening, storm interference may eventually modulate the tornado
    threat. Large to very-large hail is also possible.

    DISCUSSION...A favorable corridor for tornadoes exists along the
    warm front from west-central Wisconsin into central Wisconsin. Here,
    low-level shear will be maximized and will likely increase early
    this evening as 850 mb winds intensify. The strongest storm is
    currently along the Goodhue/Wabasha County line. This storm poses
    the greatest threat for large/very-large hail and tornadoes in the
    near term. The main question will be whether a storm can become
    dominant and move along the warm front. There will likely be a
    window during the next 2-3 hours where this is possible. Beyond that
    time, increasing low-level warm advection will probably promote
    additional storms and storm interactions will make the tornado risk
    less clear.

    ..Wendt.. 04/13/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9x2H5JDySgG7O_LvArqcQ53Z4SeYTPU_FrtUa_9anPR0_m1H0zzFjsWFNcbXK2msxYgWc_yWM= uMVqoe0xqSrlYVhA8w$ for graphic product...

    ATTN...WFO...GRB...ARX...MPX...

    LAT...LON 44379275 44669244 44819121 44739007 44528979 44178996
    44079133 44179245 44379275=20

    MOST PROBABLE PEAK TORNADO INTENSITY...120-150 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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