• MESO: Mesoscale Discussion 0420

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Tue Apr 14 18:04:33 2026
    ACUS11 KWNS 141803
    SWOMCD
    SPC MCD 141803=20
    PAZ000-WVZ000-OHZ000-141930-

    Mesoscale Discussion 0420
    NWS Storm Prediction Center Norman OK
    0103 PM CDT Tue Apr 14 2026

    Areas affected...portions of northern and eastern Ohio into western Pennsylvania

    Concerning...Severe potential...Watch possible=20

    Valid 141803Z - 141930Z

    Probability of Watch Issuance...40 percent

    SUMMARY...Multiple damaging gusts may accompany an MCS over the next
    few hours. While the efficiency in severe gust production is in
    question, convective trends will be monitored for the need of a
    Severe Thunderstorm Watch issuance.

    DISCUSSION...Deep-moist convection has developed and become
    established immediately ahead of an eastward tracking MCV. This MCS
    will track eastward along a corridor of modest deep-layer shear and
    500-1000 J/kg MLCAPE. Given the relatively lower-end buoyancy/shear
    parameter space, it is not clear how efficient the MCS will be at
    producing damaging or especially severe gusts. However, KCLE
    cross-sectional storm relative velocity data does depict weak
    descending rear-inflow features, and the deep-layer shear vector is
    oriented roughly normal to the orientation of the leading line. As
    such, some damaging (and perhaps severe) gust potential exists.
    There is also a chance for an instance or two of hail. Convective
    trends will continue to be monitored for the need of a WW issuance,
    but the severe threat may be too isolated to warrant an issuance.

    ..Squitieri/Gleason.. 04/14/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-TbKS9NTHoqvIH1rmq-Ivug5YVKq3tPRgdwVH8eYWmPFJaf_OCEvskPLpTREVBLdlbTmnrEJw= mjwkZUfSXt1Mg1Xe6E$ for graphic product...

    ATTN...WFO...CTP...PBZ...CLE...

    LAT...LON 40517981 40378100 40378187 40518238 40698264 40898287
    41088295 41298279 41428234 41808096 41898011 41767919
    41377898 40827929 40517981=20

    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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    * Origin: Capitol City Online (1:2320/107)