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  • MESO: Mesoscale Discussion 0472

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Apr 17 18:13:07 2024
    ACUS11 KWNS 171813
    SWOMCD
    SPC MCD 171812=20
    PAZ000-WVZ000-OHZ000-MIZ000-INZ000-171945-

    Mesoscale Discussion 0472
    NWS Storm Prediction Center Norman OK
    0112 PM CDT Wed Apr 17 2024

    Areas affected...extreme eastern IN...much of OH...and western PA

    Concerning...Tornado Watch 122...

    Valid 171812Z - 171945Z

    The severe weather threat for Tornado Watch 122 continues.

    SUMMARY...Storms moving into northwest OH may intensify the next 1-2
    hours. All severe hazards remain possible across Tornado Watch 122.
    A downstream watch will likely be needed in the next couple of hours
    across eastern OH into western PA.

    DISCUSSION...Convection has slowly intensified into early afternoon
    as storms move into a somewhat more unstable airmass. Stronger
    heating has allowed low-level lapse rates to steepen ahead of the
    line of convection. This will support potential for increasing
    gusts. Furthermore, low-level instability remains quite large, with
    0-3 km MLCAPE greater than 125 J/kg. Regional VWP data shows
    enlarged, and favorably curved low-level hodographs, and low-level
    rotation has been noted in velocity signatures via region radars.
    Further intensification of these cells is expected over the next
    couple hours across northwest into central Ohio.=20

    As convection continues eastward, a similar environment is expected
    to extend across parts of eastern OH into western PA. A downstream
    watch will likely be needed by 20z/4pm EDT.

    ..Leitman.. 04/17/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8lyZ2PdLFyByWBNUwwC7yJm8rEKj_Y1WKgp5oJfBfqI-SYYCMPlSo5Su7ky_6tuS7m0aZ13fn= oxorwf7grQDleLi-3w$ for graphic product...

    ATTN...WFO...PBZ...RLX...CLE...ILN...DTX...IWX...IND...

    LAT...LON 39348363 39508478 39688521 40048524 40988496 41668463
    41988007 40957978 39798025 39418115 39288274 39348363=20


    =3D =3D =3D
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