• MESO: Mesoscale Discussion 1070

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Wed Jun 10 19:57:26 2026
    ACUS11 KWNS 101957
    SWOMCD
    SPC MCD 101957=20
    MNZ000-102200-

    Mesoscale Discussion 1070
    NWS Storm Prediction Center Norman OK
    0257 PM CDT Wed Jun 10 2026

    Areas affected...north-central Minnesota

    Concerning...Severe Thunderstorm Watch 302...

    Valid 101957Z - 102200Z

    The severe weather threat for Severe Thunderstorm Watch 302
    continues.

    SUMMARY...Scattered thunderstorms are developing in northwest MN and
    moving northeastward. The threat for large hail, damaging wind
    gusts, and perhaps a tornado or two continues across the region this
    afternoon.

    DISCUSSION...Scattered thunderstorms have initiated in northwestern
    MN along a cold front draped southward through the region. They have
    produced some strong wind gusts: 39 kts was reported at 1908z in
    Roseau, MN. This storm development is aided by a shortwave impulse
    rotating through the broader mid-level cyclone, and continued
    development is expected as diurnal warming continues. A corridor of
    1500+ J/kg MLCAPE exists ahead of the cold front amidst 30-40 kts of
    0-6-km shear. Current RAP profiles indicate a negligibly inhibited
    and relatively moist troposphere with long, straight hodographs.
    Shear is predominantly southerly, yielding fast, northeastward
    motions for any stronger, discrete structures that can form. Current
    radar observations depict more linear/mixed-mode initiation,
    consistent with bulk shear oriented parallel to the front. The
    general expectation is for this sort of convective mode to continue,
    with a mix of clustery/mixed-mode convection with stronger, discrete
    structures also possible. Large hail and damaging wind gusts are the
    most likely threats with the most mature storms, with a tornado or
    two possible if increased updraft deviance occurs.

    ..Flournoy.. 06/10/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9ZEFW_O72ELgrtMHGFVkwnjJnzYmxQX7qB_AJnfx-yDWD-C2Ms1l9B4Vay72EcnudapOBPRso= hh15YOnPZVD8nN78bM$ for graphic product...

    ATTN...WFO...DLH...MPX...FGF...

    LAT...LON 47519605 48439578 48939568 49409519 49429471 48929442
    48659238 47599193 46509242 45989388 45909528 46499607
    47519605=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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