• MESO: Mesoscale Discussion 1827

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Oct 11 04:32:57 2021
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    ACUS11 KWNS 110432
    SPC MCD 110432=20

    Mesoscale Discussion 1827
    NWS Storm Prediction Center Norman OK
    1132 PM CDT Sun Oct 10 2021

    Areas affected...Eastern OK...Southeast KS...Southwest MO...Western

    Concerning...Tornado Watch 519...

    Valid 110432Z - 110630Z

    The severe weather threat for Tornado Watch 519 continues.

    SUMMARY...Severe threat will continue shifting east across the
    remainder of ww519 over the next several hours.

    DISCUSSION...LLJ is strengthening along the OK/AR border late this
    evening. As a result, low-level shear is quite strong across the
    warm sector where adequate buoyancy continues to reside. Latest
    diagnostic data suggests the current squall line is advancing
    through the instability axis and subsequent movement appreciably
    east of the current watch should result in weaker updrafts due to
    lower boundary-layer dew points. However, stronger updrafts along
    the squall line, that extends across eastern OK, continue to exhibit
    transient supercellular characteristics at times. These features
    have been mostly responsible for brief tornado reports as the squall
    line advances east. These robust structures will likely persist
    until convection propagates east of the greater buoyancy, east of

    ..Darrow.. 10/11/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!vpIeIL7Rmgn4TYT0UhUH3opc_kEawBlni1cK10H-ks8ijKop_bHitjIEsGYEezmWCzVxjoWt$=
    for graphic product...


    LAT...LON 33859590 37499593 37499394 33849400 33859590=20

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