• MESO: Mesoscale Discussion 1528

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Mon Jul 6 22:39:20 2026
    ACUS11 KWNS 062239
    SWOMCD
    SPC MCD 062238=20
    LAZ000-ARZ000-TXZ000-070045-

    Mesoscale Discussion 1528
    NWS Storm Prediction Center Norman OK
    0538 PM CDT Mon Jul 06 2026

    Areas affected...North-central Louisiana into far east Texas

    Concerning...Severe Thunderstorm Watch 467...

    Valid 062238Z - 070045Z

    The severe weather threat for Severe Thunderstorm Watch 467
    continues.

    SUMMARY...A cluster of thunderstorms has been producing 50-65 mph
    winds over the past hour. Based on the downstream environment,
    similar wind speeds will be possible for the next couple of hours as
    the band of storms spreads east into north-central Louisiana.

    DISCUSSION...Radar imagery from KSHV shows swaths of strong
    low-level velocities within a cold-pool driven band of convection.
    KSHV and K4F2 (Carthage, TX) sampled 63 and 58 mph winds
    (respectively) with the passage of the band. Although deep-layer
    shear remains very limited in the vicinity of the band, fairly
    unstable conditions downstream (MLCAPE estimated to be around 2500
    J/kg) will continue to promote strong updraft development along the
    leading edge of the outflow boundary. Somewhat steep low-level lapse
    rates of around 8 to 8.5 C/km will continue to facilitate downdraft accelerations and contribute to the development of additional swaths
    of strong to severe winds. Based on the downstream environment, peak
    wind gusts will most likely remain in the 50-70 mph range.=20

    A weak/shallow cold pool associated with diminishing convection
    across north-central LA may delineate the eastern edge of where
    these peak gusts may occur, but warmer temperatures to the southeast
    and better alignment of the cold pool with the deep-layer wind shear
    vector may promote severe gusts as far south as the southern fringe
    of WW 467.

    ..Moore.. 07/06/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7WH73rCUChjR5L7Ix8lCau8277X2MKUZiC75Kc7ihLqSjSHCh5WGU0X7OrUnGL3TPcgl9B2zA= X-MO489L11WbpJAq1E$ for graphic product...

    ATTN...WFO...SHV...

    LAT...LON 32019470 32079428 32329386 32579370 32909369 33079345
    33019257 32729240 32439239 32049246 31789254 31579271
    31429302 31389346 31399390 31449433 31619459 32019470=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


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