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  • MESO: Mesoscale Discussion 1599

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jul 13 22:15:42 2024
    ACUS11 KWNS 132215
    SWOMCD
    SPC MCD 132214=20
    WIZ000-IAZ000-MNZ000-132345-

    Mesoscale Discussion 1599
    NWS Storm Prediction Center Norman OK
    0514 PM CDT Sat Jul 13 2024

    Areas affected...Southwest WI...southeast MN...northeast IA

    Concerning...Severe Thunderstorm Watch 523...

    Valid 132214Z - 132345Z

    The severe weather threat for Severe Thunderstorm Watch 523
    continues.

    SUMMARY...An arc of strong to severe thunderstorms within and just
    west of WW 523 across southwest Wisconsin and southeast Minnesota
    may spread to the south of WW 523 across parts of northeast Iowa and
    far southern Wisconsin. Monitoring for the possibility of an
    additional severe thunderstorm watch farther south.

    DISCUSSION...Primary near-term severe potential has been
    increasingly focused along the trailing outflow behind a small
    linear cluster in southwest WI that has produced strong measured
    gusts and at least one report of tree damage thus far. The discrete
    supercells along the outflow boundary have held nearly stationary
    with a slow, east-southeastward drift. A tornado or two, large hail
    to around 2 inches in diameter, and localized damaging winds will
    remain the primary near-term threats.=20

    With an extremely unstable airmass prevalent over southwest MN and
    northwest IA, it is plausible that a similar upscale growth
    evolution with small-scale bowing structures will occur towards the
    MS Valley in northeast IA and far southern WI. Should this occur, an
    additional severe thunderstorm watch may be needed south of WW 423.

    ..Grams.. 07/13/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9aC8LrXmXvodJn9WlN9d5VhyZTOzfgRlXSLxrwI2W-IsK7VsybxKjef8oQYcovymAPzTdxRkO= sdhEIFhz4N_QRgK8Y4$ for graphic product...

    ATTN...WFO...GRB...MKX...ARX...MPX...DMX...

    LAT...LON 44229354 44249231 44119165 44089119 44319062 44489018
    44218938 43748922 43108960 42719052 42759223 43179325
    43769372 43999375 44229354=20


    =3D =3D =3D
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