• MESO: Mesoscale Discussion 1286

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jul 14 21:18:32 2021
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    ACUS11 KWNS 142118
    SPC MCD 142117=20

    Mesoscale Discussion 1286
    NWS Storm Prediction Center Norman OK
    0417 PM CDT Wed Jul 14 2021

    Areas affected...Central/northern Iowa

    Concerning...Tornado Watch 378...

    Valid 142117Z - 142215Z

    The severe weather threat for Tornado Watch 378 continues.

    SUMMARY...Two supercell thunderstorms in central Iowa have recently
    had observed tornadoes reported. The mesoscale environment will
    continue to favor supercells with an attendant tornado threat.

    DISCUSSION...A supercell thunderstorm in Calhoun County has recently
    had a tornado reported with it. A newer storm to the east in
    Hamilton County has also shown supercell structure with a weak TDS
    signature on the 0.5 degree KDMX 2109Z scan. These storms are
    interacting favorably with outflow from a convective complex that
    moved through the region earlier today. This favorable mesoscale
    environment will continue to support supercell storms with tornadic
    potential this afternoon.

    ..Wendt.. 07/14/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!s7UcvxJQmGLwmudwNqs9BPqTqRejd7lbcCTjiI3WwDqrsjTckBkH_nkxXPiDs_0rT66jGuWA$=
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    LAT...LON 42519487 42859419 42979282 42739241 42269248 42049373
    41999444 42119485 42519487=20

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