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  • MESO: Mesoscale Discussion 0359

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sat Apr 4 20:40:07 2026
    ACUS11 KWNS 042040
    SWOMCD
    SPC MCD 042039=20
    NYZ000-PAZ000-OHZ000-MIZ000-INZ000-042245-

    Mesoscale Discussion 0359
    NWS Storm Prediction Center Norman OK
    0339 PM CDT Sat Apr 04 2026

    Areas affected...much of northern Ohio into far northwest
    Pennsylvania

    Concerning...Severe Thunderstorm Watch 97...

    Valid 042039Z - 042245Z

    The severe weather threat for Severe Thunderstorm Watch 97
    continues.

    SUMMARY...Scattered strong to severe storms remain possible through
    late afternoon across the watch area.

    DISCUSSION...A leading line of thunderstorms well ahead of the cold
    front moved across northwest OH and far southeast Lower MI earlier
    this afternoon, producing locally damaging gusts. This line has
    since weakened and is now entering into central OH.=20

    The air mass continues to warm across eastern areas, and some
    rejuvenation is possible. Further, 0-1 km shear on the order of
    100-175 m2/s2 exists over northern OH and eastward along the south
    shores of Lake Erie, which may aid rotation within any storms that
    move into that zone. The CLE VWP shows 0-1 SRH around 175 m2/s2 with
    0-3 km shear of 42 kt.

    Farther west, a narrow line of convection is forming along the cold
    front into far eastern IN and into northwest OH/southeast Lower MI.
    Instability is weak here, but pockets of destabilization in the wake
    of the earlier activity may allow for at least isolated severe
    gusts. Low-level shear is comparably favorable here as well,
    possibly supporting QLCS structures should convection become
    sufficiently established.

    ..Jewell.. 04/04/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6eONY5UzrhffmvBMxQRDVqQ4VWQX86p0DTdn_JxiDak1wlNJq73Ec7Q-XLOAkQiA27RSG-Cnx= YJcHZXvQrVOeX70zn8$ for graphic product...

    ATTN...WFO...BUF...PBZ...CLE...ILN...DTX...IWX...GRR...IND...

    LAT...LON 40318524 41218475 42238444 42418425 42428349 42268302
    41928276 42128094 42438005 42277969 41727998 40958084
    40588169 40088251 39858347 40128506 40318524=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH


    =3D =3D =3D
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