• MESO: Mesoscale Discussion 0627

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Apr 30 23:54:18 2025
    ACUS11 KWNS 302354
    SWOMCD
    SPC MCD 302353=20
    INZ000-ILZ000-010100-

    Mesoscale Discussion 0627
    NWS Storm Prediction Center Norman OK
    0653 PM CDT Wed Apr 30 2025

    Areas affected...Parts of southeast Illinois into southern Indiana

    Concerning...Tornado Watch 200...

    Valid 302353Z - 010100Z

    The severe weather threat for Tornado Watch 200 continues.

    SUMMARY...A locally favorable tornado corridor is evident from parts
    of southeastern Illinois into southern Indiana in the near-term --
    within Tornado Watch 200.

    DISCUSSION...Several discrete mini supercell structures are evolving
    along an east/west-oriented warm front from southeast IL into
    southern IN. Ahead of these storms, the IND VWP is sampling a
    clockwise-curved hodograph with around 250 m2/s2 0-1km SRH along the
    front (based on observed storm motion). Given the narrow overlap of
    this boosted SRH and surface-based instability, a locally favorable
    tornado corridor is evident in the near-term.

    ..Weinman.. 04/30/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5zqOXNlPg1bQx5MC4JQ9vAaik4U6pelQvpzmEZETnOEw2yxd0ZF9X44wD5IHyxU7ArD6ReDcm= y23m0HgmOKNAvbpWxQ$ for graphic product...

    ATTN...WFO...LMK...IND...ILX...LSX...

    LAT...LON 39518875 39458783 39268565 39018559 38758578 38688634
    38768757 38918912 39128922 39388904 39518875=20

    MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


    =3D =3D =3D
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