• MESO: Mesoscale Discussion 0622

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Wed Apr 29 22:21:13 2026
    ACUS11 KWNS 292221
    SWOMCD
    SPC MCD 292220=20
    LAZ000-MSZ000-TXZ000-300015-

    Mesoscale Discussion 0622
    NWS Storm Prediction Center Norman OK
    0520 PM CDT Wed Apr 29 2026

    Areas affected...central Louisiana and far eastern Texas

    Concerning...Severe Thunderstorm Watch 180...

    Valid 292220Z - 300015Z

    The severe weather threat for Severe Thunderstorm Watch 180
    continues.

    SUMMARY...Some risk of severe hail, and perhaps damaging winds,
    persists across portions of WW 180 in central Louisiana.
    Additionally, conditions are being monitored along and south of an
    outflow boundary for additional development within a buoyant air
    mass.

    DISCUSSION...Organized convection with a history of producing severe
    hail continues to traverse far eastern TX and western LA. Although
    this activity will likely remain elevated behind a surface
    front/outflow boundary, the downstream environment continues to
    feature sufficient MUCAPE (around 1500 J/kg) and deep-layer wind
    shear for organized convection, including the potential for elevated supercells. Consequently, the primary hazard will most likely be
    large hail (most likely in the 1 to 1.75 inch range, though hail
    stones up to 2 inches appear possible given favorably weak low-level
    shear and strong flow aloft). Sporadic damaging winds also appear
    possible given the relatively warm (albeit still stable) surface
    conditions.

    Further south, trends are being monitored as new convection attempts
    to develop along and ahead of the front/outflow boundary. Convection
    developing towards the south will mature in a similarly favorable
    environment and will pose a severe hail threat. New convection may
    develop to the south of the current bounds of WW 180 depending on
    the southward propagation of the outflow. If this occurs, downstream
    watch issuance may be needed.

    ..Moore.. 04/29/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5oeRf7mJNvXdnx0ZidfVyylhj8N-_Iz98ZqTxD4cEqIM4wOIcM_Yj4mSb1GC6VscTv3CK7NSh= NGEvVw_mYTFXwQ34R4$ for graphic product...

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

    LAT...LON 32289383 32339351 32189216 32109188 31949158 31679149
    31099161 30969173 30719200 30649259 30659302 30739343
    30819386 30979419 31279438 31619443 31819442 31999436
    32209414 32289383=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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