• MESO: Mesoscale Discussion 1379

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jun 20 03:53:51 2025
    ACUS11 KWNS 200353
    SWOMCD
    SPC MCD 200353=20
    MNZ000-SDZ000-NDZ000-200600-

    Mesoscale Discussion 1379
    NWS Storm Prediction Center Norman OK
    1053 PM CDT Thu Jun 19 2025

    Areas affected...Eastern Dakotas into western Minnesota

    Concerning...Severe Thunderstorm Watch 445...446...

    Valid 200353Z - 200600Z

    The severe weather threat for Severe Thunderstorm Watch 445, 446
    continues.

    SUMMARY...Scattered severe thunderstorms will focus across portions
    of the eastern Dakotas and western Minnesota.

    DISCUSSION...LLJ is increasing across eastern NE into eastern SD
    where 1km VAD winds are now on the order of 45-55kt. Scattered
    severe thunderstorms are propagating southeast across the eastern
    Dakotas and low-level warm advection should encourage this activity
    to spread into western MN, along/north of the surface boundary
    draped across this region. Hail is likely occurring with the most
    robust updrafts, and latest MRMS data suggests hail in excess of 1
    inch is probable at times. Over the next several hours, LLJ will
    gradually strengthen and shift into southern MN, and should
    encourage continued southeast propagation into the upper MS Valley
    region.

    ..Darrow.. 06/20/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-hIByglcsFBFsYbxRr5wPHO-h7tG6fDEdYwI94tCz4_OKCo7uwuC9I_yxjt5ujbOY1xDMtY4v= Y7qWzPm9GqY1-42G9E$ for graphic product...

    ATTN...WFO...MPX...FGF...FSD...ABR...BIS...

    LAT...LON 47469773 45089482 44279607 44729809 46679971 47469773=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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