• MESO: Mesoscale Discussion 0324

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Mar 31 11:17:12 2025
    ACUS11 KWNS 311117
    SWOMCD
    SPC MCD 311116=20
    ALZ000-MSZ000-LAZ000-311245-

    Mesoscale Discussion 0324
    NWS Storm Prediction Center Norman OK
    0616 AM CDT Mon Mar 31 2025

    Areas affected...central/southern MS into southeast LA

    Concerning...Severe Thunderstorm Watch 83...84...

    Valid 311116Z - 311245Z

    The severe weather threat for Severe Thunderstorm Watch 83, 84
    continues.

    SUMMARY...A line of convection will continue shifting east/southeast
    across central/southern Mississippi and southeast Louisiana this
    morning, posing a risk for damaging wind gusts.

    DISCUSSION...A robust line of convection, with embedded bowing
    elements, will continue to shift east/southeast across the MCD area
    this morning. A recent gust of at least 65 mph was noted at KJAN
    with the northern bowing segment. A couple of intense bowing
    segments have occasionally been noted across parts of south-central
    LA. This activity is expected to continue producing severe/damaging
    gusts with eastward extent through the morning given favorable
    downstream instability and an increasing 850 mb southwesterly
    low-level jet. Regional VWP data do indicated some modestly enlarged
    low-level hodographs. However, 0-1 km shear is fairly weak, around
    15-25 kt amid poor low-level lapse rates. This should temper the
    tornado risk, though a brief spin-up could occur given the very
    moist boundary layer and at least modest low-level instability.

    ..Leitman.. 03/31/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8_V9bJr8w6RFX2Xz-Us9Rgtv_JCoN3DfVHwLcDfVxfgKUJ6m4i2Y4vt1Uv_JhIF97xalDD7vF= gl76ktGqDY_KW5EoiI$ for graphic product...

    ATTN...WFO...MOB...JAN...LIX...LCH...

    LAT...LON 32658950 32408861 31588825 30948834 30178872 29688957
    29599086 29659207 29739249 29929270 30119277 30309262
    30839183 31689072 32658950=20

    MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
    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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