• MESO: Mesoscale Discussion 1711

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Sep 8 00:16:45 2021
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    ACUS11 KWNS 080016
    SWOMCD
    SPC MCD 080016=20
    OHZ000-MIZ000-080145-

    Mesoscale Discussion 1711
    NWS Storm Prediction Center Norman OK
    0716 PM CDT Tue Sep 07 2021

    Areas affected...portions of southeast Lower Michigan

    Concerning...Severe Thunderstorm Watch 490...

    Valid 080016Z - 080145Z

    The severe weather threat for Severe Thunderstorm Watch 490
    continues.

    SUMMARY...The severe threat continues across Severe Thunderstorm
    Watch 490, mainly in association with a strong storm across
    southeast Lower Michigan. Damaging gusts are expected to be the main
    threat with this storm.

    DISCUSSION...A near-surface based supercell has recently evolved
    into a small bowing complex with an MCV while exiting Hillsdale
    County/moving into Lenawee County, MI. KIWX and KDTX radar data
    suggests that at least mid-level rotation persists with this storm,
    where 50+ kts of effective bulk shear (based on 00Z mesoanalysis)
    and over 200 m2/s2 effective SRH are present despite meager
    buoyancy. As such, a couple damaging gusts cannot be completely
    ruled out with this storm before it progresses over Lake Eerie.

    ..Squitieri/Guyer.. 09/08/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!oJv3MJUfIJ1FwT0lczJ-sxMBlgjsqRRekDZVJKSFproH36Ni5NW794bdOq1zLYNiHURmQqYB$=
    for graphic product...

    ATTN...WFO...CLE...DTX...IWX...GRR...

    LAT...LON 41618421 41838459 42008471 42228462 42468392 42418332
    42038300 41618313 41608374 41618421=20



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Sep 8 00:19:47 2021
    This is a multi-part message in MIME format...

    ------------=_1631060392-90326-3255
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    ACUS11 KWNS 080019
    SWOMCD
    SPC MCD 080019 COR
    OHZ000-MIZ000-080145-

    Mesoscale Discussion 1711
    NWS Storm Prediction Center Norman OK
    0719 PM CDT Tue Sep 07 2021

    Areas affected...portions of southeast Lower Michigan

    Concerning...Severe Thunderstorm Watch 490...

    Valid 080019Z - 080145Z

    CORRECTED FOR SPELLING

    The severe weather threat for Severe Thunderstorm Watch 490
    continues.

    SUMMARY...The severe threat continues across Severe Thunderstorm
    Watch 490, mainly in association with a strong storm across
    southeast Lower Michigan. Damaging gusts are expected to be the main
    threat with this storm.

    DISCUSSION...A near-surface based supercell has recently evolved
    into a small bowing complex with an MCV while exiting Hillsdale
    County/moving into Lenawee County, MI. KIWX and KDTX radar data
    suggests that at least mid-level rotation persists with this storm,
    where 50+ kts of effective bulk shear (based on 00Z mesoanalysis)
    and over 200 m2/s2 effective SRH are present despite meager
    buoyancy. As such, a couple damaging gusts cannot be completely
    ruled out with this storm before it progresses over Lake Erie.

    ..Squitieri/Guyer.. 09/08/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!u7K3KU9ZkszphsZXojovFMGvWTVlJ87R628-wzAVDKY3VPGnh17C3OUJW5uAAenSaHrf3wvz$=
    for graphic product...

    ATTN...WFO...CLE...DTX...IWX...GRR...

    LAT...LON 41618421 41838459 42008471 42228462 42468392 42418332
    42038300 41618313 41608374 41618421=20



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