• MESO: Mesoscale Discussion 1419

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Wed Jul 1 18:22:19 2026
    ACUS11 KWNS 011822
    SWOMCD
    SPC MCD 011822=20
    LAZ000-MSZ000-TXZ000-012015-

    Mesoscale Discussion 1419
    NWS Storm Prediction Center Norman OK
    0122 PM CDT Wed Jul 01 2026

    Areas affected...Parts of the lower Mississippi Valley

    Concerning...Severe potential...Watch unlikely=20

    Valid 011822Z - 012015Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Thunderstorms developing in proximity to a residual
    frontal zone and/or along outflow boundaries will be capable of
    producing strong to severe downburst winds. This threat will most
    likely remain sufficiently isolated to preclude watch issuance.

    DISCUSSION...Sporadic downbursts are evident in KPOE and KHDC
    velocity imagery as scattered, but poorly organized convection
    continues to develop along a residual frontal zone and along outflow
    boundaries across the lower MS Valley region. With time, this
    activity is forecast to spread north where temperatures are quickly
    warming into the 90s within a very moist air mass. The combination
    of steepening low-level lapse rates, high moisture content, and
    increasing buoyancy through late afternoon should maintain, if not
    increase, the potential for robust wet downbursts. Localized swaths
    of strong to severe winds (most likely 40-60 mph) appear possible
    with the more intense downbursts. Given the alignment of the
    predominantly zonally-oriented initiation zone with the weak
    easterly mid-level flow aloft, the potential for organized
    propagating clusters appears limited, which should preclude a more
    widespread severe wind threat and the need for watch issuance for LA
    and far southern MS. Nonetheless, the potential for severe
    downbursts should increase through peak heating.

    ..Moore/Guyer.. 07/01/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9umAB7Fg_TVQE2uVfOQDzUR4-LQVc1rh3x4Bu2UJ6wWVkn0RsKDWYmC-2ISZCO7vkvG0pMgSM= n5-x6iwdiMxt4xSLaU$ for graphic product...

    ATTN...WFO...JAN...LIX...LCH...SHV...

    LAT...LON 29669058 29659102 29899164 30649350 31169367 31709363
    32079334 32289287 32269253 31969181 31279008 31028963
    30788937 30518935 30318939 30088963 29829009 29669058=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH


    =3D =3D =3D
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    * Origin: Capitol City Weather Station (1:2320/127)