• MESO: Mesoscale Discussion 1763

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jul 23 19:55:14 2025
    ACUS11 KWNS 231955
    SWOMCD
    SPC MCD 231954=20
    MIZ000-WIZ000-MNZ000-232200-

    Mesoscale Discussion 1763
    NWS Storm Prediction Center Norman OK
    0254 PM CDT Wed Jul 23 2025

    Areas affected...portions of southeast MN into north-central WI

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

    Valid 231954Z - 232200Z

    Probability of Watch Issuance...60 percent

    SUMMARY...Intensifying thunderstorms may pose a risk of damaging
    wind gusts across southeast Minnesota into portions of
    northern/central Wisconsin the next few hours. Area is being
    monitored for possible watch issuance.

    DISCUSSION...Isolated to scattered thunderstorms are
    developing/intensifying this afternoon along/just ahead of the southward-advancing cold front. This activity is tracking along a
    differential heating zone and within the strong instability gradient
    oriented across north-central WI. Strong heating ahead of these
    storms and dewpoints in the mid 70s have allowed inhibition to
    weaken. This area is on the edges of more favorable deep shear, but
    20-30 kt effective shear magnitudes may be sufficient for organized clusters/small bows given strong instability. Modified RAP forecast
    soundings and regional VWP data show somewhat small but favorably
    curved low-level hodographs. Low-level shear will remain modest, but
    given the very moist and unstable boundary layer, a tornado or two
    also could occur, in addition to damaging wind gusts. This area is
    being monitored for possible watch issuance.

    ..Leitman/Smith.. 07/23/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5fBtQbS4WWxg9eZQsSHBTHFS7FZRGdvJoq0_kdo6C9HD1ejvk-5mMZt0ldXINHaNVkUX6nAKo= fRvxGCbeJtBQ2WQ_d4$ for graphic product...

    ATTN...WFO...MQT...GRB...DLH...ARX...MPX...

    LAT...LON 44818795 44578908 44109197 43689420 43809439 44069426
    44489367 44969260 45339151 45599006 45718840 45258769
    44818795=20

    MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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