• MESO: Mesoscale Discussion 0382

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Apr 3 20:43:42 2025
    ACUS11 KWNS 032043
    SWOMCD
    SPC MCD 032043=20
    ARZ000-LAZ000-TXZ000-032215-

    Mesoscale Discussion 0382
    NWS Storm Prediction Center Norman OK
    0343 PM CDT Thu Apr 03 2025

    Areas affected...Northeast TX into northwest LA and southern AR

    Concerning...Tornado Watch 109...

    Valid 032043Z - 032215Z

    The severe weather threat for Tornado Watch 109 continues.

    SUMMARY...Storm intensification is possible by late afternoon.
    Tornadic supercells remain possible near/south of the front, in
    addition to a threat of severe hail and wind.

    DISCUSSION...Some increase in deep convection has been noted across
    northeast TX, along and south/east of an outflow-reinforced surface
    front draped from northern MS into southern AR and northeast TX. The environment remains quite favorable for tornadic supercells within
    the warm sector in this region, with the 19Z SHV sounding depicting
    MLCAPE in excess of 3000 J/kg, 60 kt of effective shear, and 0-1 km
    SRH of greater than 200 m2/s2. However, in the absence of stronger
    large-scale ascent, it remains uncertain if any supercells can
    mature prior to moving to the cool side of the surface front. Any
    sustained surface-based supercells could pose some threat of
    significant (EF2+) tornadoes within this environment. Otherwise, a
    threat for severe hail (possibly greater than 2 inches in diameter)
    and damaging wind will accompany any supercells (surface-based or
    elevated) within this regime.

    ..Dean.. 04/03/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6FhaknN3Iy6iOQe8ikhk8VeX_d_0ES0Jeuxk2YeCIHLo3OaW9Wl9KieuYE16tUU9bkVuEZhtV= XVtFNHKaC-dfjKMe0E$ for graphic product...

    ATTN...WFO...JAN...LZK...SHV...

    LAT...LON 32569276 31519396 31329450 31539507 32019522 32349522
    32889512 33549398 34309154 33689144 33229151 33009203
    32939217 32569276=20

    MOST PROBABLE PEAK TORNADO INTENSITY...120-150 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


    =3D =3D =3D
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