• MESO: Mesoscale Discussion 1908

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Oct 27 06:14:17 2021
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    ACUS11 KWNS 270614
    SWOMCD
    SPC MCD 270613=20
    OKZ000-270815-

    Mesoscale Discussion 1908
    NWS Storm Prediction Center Norman OK
    0113 AM CDT Wed Oct 27 2021

    Areas affected...Parts of central into eastern Oklahoma

    Concerning...Severe Thunderstorm Watch 538...

    Valid 270613Z - 270815Z

    The severe weather threat for Severe Thunderstorm Watch 538
    continues.

    SUMMARY...Localized severe wind gusts with the potential for an
    isolated tornado may continue another or or so, before tending to
    diminish as the squall line advances east of the watch by 08-09Z.

    DISCUSSION...A northeastward surging segment of the squall line has
    crossed the Interstate 35 corridor of central Oklahoma with mostly
    sub-severe wind gusts recorded in ASOS and mesonet observations, but
    with a number of embedded cyclonic circulations evident along the
    leading edge of the surface cold pool. Low-level vertical shear is
    strong eastward through much of the remainder of Oklahoma, beneath a
    50 kt southerly 850 mb jet. However, the squall line is in the
    process of progressing across and east of a surface warm front, with
    a substantive near surface stable layer persisting to the northeast
    of the front. With continued eastward progression, even potential
    for localized severe wind gusts and/or an isolated tornado, seems
    likely to diminish within the next few hours.

    ..Kerr.. 10/27/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!uLNWzBUgCfnOJ-K979Gpum08Udb4thP7CBtZBq-M5K1hrdw8U-ZSsV_Be9q6doHqVrFvsyB0$=
    for graphic product...

    ATTN...WFO...TSA...OUN...

    LAT...LON 36809696 36859598 36259553 35579531 34379553 33859619
    34139685 34829694 35399685 36219718 36649734 36809696=20



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