• MESO: Mesoscale Discussion 0879

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue May 21 22:10:22 2024
    ACUS11 KWNS 212210
    SWOMCD
    SPC MCD 212209=20
    WIZ000-IAZ000-212345-

    Mesoscale Discussion 0879
    NWS Storm Prediction Center Norman OK
    0509 PM CDT Tue May 21 2024

    Areas affected...Central Iowa into northeast Iowa and far southwest
    Wisconsin.

    Concerning...Tornado Watch 277...

    Valid 212209Z - 212345Z

    The severe weather threat for Tornado Watch 277 continues.

    SUMMARY...Intense to potentially violent tornado threat across
    northeast Iowa and into southwest Wisconsin over the next 2 hours

    DISCUSSION...The supercell which formed the intense to potentially
    violent tornado which impacted Greenfield and other portions of
    southwest Iowa this afternoon has re-intensified after storm
    mergers. This storm and another strong supercell to its south are
    moving into an increasingly favorable tornadic environment with a
    STP of 5 to 6 (per SPC mesoanalysis). The backed surface winds and
    vorticity rich environment in the wake of the morning convection
    will provide ample low-level vorticity for a sustained tornado
    threat into the early evening. One or more long-track, potentially
    violent tornadoes are possible in this corridor over the next 90 to
    120 minutes.

    ..Bentley/Thompson.. 05/21/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!76ma_-eTOg8x1WTqA5zXqFiS3pSU346HiWP1cJKEdI6LQ_iH7vaZy5WctewIYRMGiQrdNq5kW= TABskUMgrsBJoeuNjo$ for graphic product...

    ATTN...WFO...DVN...ARX...DMX...

    LAT...LON 43319094 43149080 42899079 42509117 41569273 41459346
    42039360 42679316 43289233 43499174 43489133 43499120
    43319094=20


    =3D =3D =3D
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