• MESO: Mesoscale Discussion 1590

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue Aug 24 12:11:26 2021
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    ACUS11 KWNS 241211
    SWOMCD
    SPC MCD 241210=20
    WIZ000-MNZ000-241345-

    Mesoscale Discussion 1590
    NWS Storm Prediction Center Norman OK
    0710 AM CDT Tue Aug 24 2021

    Areas affected...Portions of southern/eastern MN into
    western/central WI

    Concerning...Severe Thunderstorm Watch 460...

    Valid 241210Z - 241345Z

    The severe weather threat for Severe Thunderstorm Watch 460
    continues.

    SUMMARY...Strong to severe wind gusts may continue this morning with
    multiple clusters of storms. The need for a downstream Severe
    Thunderstorm Watch is uncertain.

    DISCUSSION...The primary MCS across central/eastern MN has produced
    mainly sub-severe measured wind gusts as it moved over the Twin
    Cities metro, likely owing to a shallow near-surface stable layer
    evident on the 12Z sounding from MPX. Still, velocity data from KMPX
    show strong outbound velocities at low levels, and the environment
    downstream should remain at least somewhat conducive for
    strong/gusty winds capable of producing occasional damage in the
    short term. Another cluster of storms has developed across
    west-central WI along and just north of the surface boundary. A
    measured severe wind gust to 55 kt was reported at KEAU at 1145Z
    with this lead cluster. The need for a downstream Severe
    Thunderstorm Watch into more of southern MN and central WI remains
    unclear, but convective trends will continue to be closely
    monitored.

    ..Gleason/Thompson.. 08/24/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!qQYe7ztyaMlI3ADbVjhZCOKCjcA4o0rhTlpGlB2BtxRwqray41CywRA9ZBuCq3nagj8wqfjh$=
    for graphic product...

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

    LAT...LON 44229470 44439370 44889313 45549307 45599179 45339065
    44968937 43678946 43539024 43579301 43939469 44229470=20



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