• MESO: Mesoscale Discussion 1480

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Aug 11 17:27:36 2021
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    ACUS11 KWNS 111727
    SWOMCD
    SPC MCD 111726=20
    MIZ000-OHZ000-INZ000-111900-

    Mesoscale Discussion 1480
    NWS Storm Prediction Center Norman OK
    1226 PM CDT Wed Aug 11 2021

    Areas affected...northern Indiana...southern Michigan and northwest
    Ohio

    Concerning...Severe Thunderstorm Watch 423...

    Valid 111726Z - 111900Z

    The severe weather threat for Severe Thunderstorm Watch 423
    continues.

    SUMMARY...A more organized severe weather threat is developing
    across northern Indiana.

    DISCUSSION...The earlier cluster of storms has now congealed into
    more of a bowing segment across northern Indiana. Recently,
    estimated 60 mph winds were reported in Kosciusko county and radar
    estimated winds in excess of 60 knots are being measured by the KIWX
    radar at 700 feet to the northwest of the radar. In addition,
    periodic, weak circulations have been observed along this line, to
    the south of the apex of the bow. The downstream airmass downstream
    of this bowing segment is very unstable with MLCAPE around 2500
    J/kg. Therefore, expect maintenance and potential strengthening as
    this MCS moves east across northern Indiana and eventually into
    northwest Ohio.

    ..Bentley/Thompson.. 08/11/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!r7M28r67vI_OxUEvuBy2KcmTFfBUC9RPr4O6nM0IFhqBG-VZ9mViSeHd-n94c1TUobLD4I6q$=
    for graphic product...

    ATTN...WFO...ILN...DTX...IWX...GRR...

    LAT...LON 41988597 42268555 42178431 41478397 40828397 40548472
    40548571 40638617 41058616 41988597=20



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