• MESO: Mesoscale Discussion 1688

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Sep 3 01:51:06 2021
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    ACUS11 KWNS 030151
    SWOMCD
    SPC MCD 030150=20
    NEZ000-KSZ000-030315-

    Mesoscale Discussion 1688
    NWS Storm Prediction Center Norman OK
    0850 PM CDT Thu Sep 02 2021

    Areas affected...portions of southern Nebraska into northern Kansas

    Concerning...Tornado Watch 487...

    Valid 030150Z - 030315Z

    The severe weather threat for Tornado Watch 487 continues.

    SUMMARY...A damaging gust or two remains possible with one of the
    stronger storms, though the overall severe threat is expected to
    diminish.

    DISCUSSION...MRMS mosaic radar imagery depicts decreasing storm
    coverage and an overall decrease in 30 dBZ echo top heights across
    northwestern portions of Tornado Watch 487. As deep-layer ascent
    continues to drift away from portions of south-central Nebraska in
    tandem with nocturnal cooling, low-level lift will further weaken
    with time, as will storm intensity. Nonetheless, given ample
    vertical shear across the region and some residual buoyancy (1000+
    J/kg MLCAPE), storms may remain organized enough to support a
    damaging gust or two over the next couple of hours.

    ..Squitieri/Guyer.. 09/03/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!p-nz2WHnWlygp38YOptuNvwbzTroUocOIoKEWyM7BFyyclPeUC3Ko3NxsU_6ybIOaVC-oGgi$=
    for graphic product...

    ATTN...WFO...OAX...TOP...GID...

    LAT...LON 40349966 40849909 41329824 41369758 41109700 40629681
    40199691 39999724 39969793 39949859 40079934 40349966=20



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