• MESO: Mesoscale Discussion 1282

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Tuesday, June 23, 2026 22:41:04
    ACUS11 KWNS 232240
    SWOMCD
    SPC MCD 232240=20
    MNZ000-WIZ000-240015-

    Mesoscale Discussion 1282
    NWS Storm Prediction Center Norman OK
    0540 PM CDT Tue Jun 23 2026

    Areas affected...portions of Minnesota into far western Wisconsin

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

    Valid 232240Z - 240015Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Isolated to widely scattered thunderstorms continue to
    pose a risk for isolated large hail and perhaps a brief tornado or
    two. Watch issuance remains uncertain.

    DISCUSSION...Convective coverage has gradually increased across
    portions of Minnesota through early evening along a surface
    boundary. Isolated, transient supercell structures have been noted
    with this activity and have produced sporadic reports of brief
    funnel clouds and hail up to 1.75 inches in diameter over the past
    couple of hours. Expectation is for this activity to persist for at
    least another couple of hours, with two areas of locally greater
    severe potential evident within the broader discussion area.

    Across north-central Minnesota, isolated thunderstorms along an
    occluded front have shown brief upticks in intensity. Should a
    stronger cell become better established, isolated large hail and
    perhaps a brief tornado may be possible. Farther south, ongoing
    convection across south-central Minnesota continues to display signs
    of modest organization. The strongest cells continue to pose a risk
    for isolated large hail and a brief tornado, particularly with any
    cells that favorably interact with the surface warm front. Watch
    issuance remains uncertain owing to generally limited/marginal
    thermodynamic profiles and the isolated nature of the severe threat.

    ..Chalmers/Smith.. 06/23/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7dbVfSNL8qKWrrebe10Lhp_sgorA1_AF1RCdibYgyr2bXjs9fNMxxA2vRvmPz6R7xfIVg8CEg= 6x1Wcck3Y_y3ckL94I$ for graphic product...

    ATTN...WFO...DLH...ARX...MPX...FGF...FSD...

    LAT...LON 45279580 46749593 47419594 47739584 47929560 47989504
    47909465 47679432 46579409 46039398 45529382 45199332
    44949258 44709198 44519179 44249180 43999216 43909359
    43939460 44019527 44129554 44529575 45279580=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    MOST PROBABLE PEAK WIND GUST...UP TO 60 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)