• MESO: Mesoscale Discussion 1236

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jun 24 06:52:02 2023
    ACUS11 KWNS 240651
    SWOMCD
    SPC MCD 240651=20
    NEZ000-SDZ000-240815-

    Mesoscale Discussion 1236
    NWS Storm Prediction Center Norman OK
    0151 AM CDT Sat Jun 24 2023

    Areas affected...Central/Eastern NE

    Concerning...Severe Thunderstorm Watch 368...

    Valid 240651Z - 240815Z

    The severe weather threat for Severe Thunderstorm Watch 368
    continues.

    SUMMARY...The threat for damaging wind gusts will continue across
    central and eastern NE for the next few hours.

    DISCUSSION...Outflow from the two ongoing convective lines in
    central NE converged just east of the KLNX radar. The southern
    outflow, which has a bit more northeastward progression, now appears
    most prominent, with new development recently developing along its
    leading edge in southern Brown, Blaine, and northern Custer
    counties. Recent storm-motion estimates show this convective line is
    moving east-northeast at 50 kt, and the latest velocity data from
    KLNX shows strong outbounds. There is also a minimum in reflectivity
    data in the wake of the line. All of these factors suggest that a
    rear-inflow jet has strengthened within this portion of the line.=20

    Ample low-level moisture, verified by surface dewpoints in the mid
    60s, and steep mid-level lapse rates (around 7 deg C per km from 700
    to 500 mb) exist downstream across east-central NE. Additionally, a
    southerly low-level jet extends across much of central and eastern
    NE, with related warm-air advection across the region. Expectation
    is for the ongoing line to continue eastward, with an attendant
    threat for damaging gusts. A corridor of stronger gusts is possible
    across east-central NE, roughly from ODX to BVN and OFK. Current
    storm motion takes the line to the edge of Severe Thunderstorm Watch
    368 at 09Z.

    ..Mosier.. 06/24/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5BNYG_b9Z1CIj-gcQFVSOjy_C7tYawu2x4Umn9Q3atJL6Q1pOHefP9OVGihioND9lp20QzqqN= dN7xS8kJC4oj681xpU$ for graphic product...

    ATTN...WFO...FSD...OAX...GID...LBF...

    LAT...LON 41110012 42739992 42949810 42549713 40939730 40509796
    40509972 41110012=20


    =3D =3D =3D
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