• MESO: Mesoscale Discussion 1579

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Aug 23 00:06:14 2021
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    ACUS11 KWNS 230006
    SWOMCD
    SPC MCD 230006=20
    NEZ000-KSZ000-230200-

    Mesoscale Discussion 1579
    NWS Storm Prediction Center Norman OK
    0706 PM CDT Sun Aug 22 2021

    Areas affected...South-Central Nebraska and North-Central Kansas

    Concerning...Severe Thunderstorm Watch 456...

    Valid 230006Z - 230200Z

    The severe weather threat for Severe Thunderstorm Watch 456
    continues.

    SUMMARY...The threat for large hail and damaging winds continues
    with storms moving eastward along/near the Nebraska-Kansas border
    for the next few hours.

    DISCUSSION...A dominant storm in south-central Nebraska that has
    produced severe weather across Red Willow and Furnas Counties
    continues to surge eastward and has merged with convection in Harlan
    County. The environment, characterized by MLCAPE around 3000 J/kg
    and effective bulk shear of 40 knots, should support a continuation
    of the severe threat (especially wind) with the eastward-evolving
    cluster of storms. After sunset, the convective inhibition is
    expected to increase rapidly as the surface cools and southwesterly
    low-level jet advects drier air into the region. As a result, the
    severe threat is expected to diminish by 03Z.

    ..Jirak/Grams.. 08/23/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!o7XjpnMBz5_d8ciH506xVU7GGH5ch2P_TI-k6EE25ljVeBODpZ8SycuZ8cUeWP40CcYrNQjQ$=
    for graphic product...

    ATTN...WFO...GID...GLD...

    LAT...LON 40129995 40439961 40559916 40569887 40579837 40529793
    40399786 39999796 39869836 39859910 39859982 40129995=20



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