• MESO: Mesoscale Discussion 1136

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sunday, June 14, 2026 16:49:48
    ACUS11 KWNS 141649
    SWOMCD
    SPC MCD 141649=20
    PAZ000-WVZ000-OHZ000-INZ000-141745-

    Mesoscale Discussion 1136
    NWS Storm Prediction Center Norman OK
    1149 AM CDT Sun Jun 14 2026

    Areas affected...far eastern Indiana...portions of Ohio...western Pennsylvania...northern West Virginia Panhandle

    Concerning...Severe potential...Watch likely=20

    Valid 141649Z - 141745Z

    Probability of Watch Issuance...80 percent

    SUMMARY...Thunderstorm activity along and ahead the cold front will
    continue to increase in coverage and intensity. Severe potential
    will increase into the afternoon.

    DISCUSSION...Thunderstorm activity ongoing along the cold front from
    central Indiana into western Ohio is increasing in coverage and
    intensity. Ahead of the front, filtered daytime heating has warmed
    temperatures in Ohio into the mid to upper 80s. This in combination
    with dew points in the upper 60s to 70s has yielded MLCAPE around
    500-1000 J/kg. Low-level lapse rates are also steepening, with
    around 7-7.5 C/km analyzed in SPC Mesoanalysis. Increasingly
    favorable thermodynamics in combination with deep layer shear around
    45-50 kts will support storm organization and severe potential
    downstream. Increasingly favorable low-level shear profiles into PA,
    where surface winds have more of a southeasterly component may
    support potential for line embedded circulations and perhaps a
    tornado. The main hazard will be damaging wind. A watch will will
    be needed soon to cover this potential severe risk.

    ..Thornton/Mosier.. 06/14/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_fJwEUS9MR7Him8t2d8n21RftB-XBQGGABu-YnIGjfVN0HSIwUWmzAb36PKFMhcprQGOEEeeG= Bue5l5uFOclSeQxiSY$ for graphic product...

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

    LAT...LON 39408067 39038292 39248470 40018526 40788496 41318431
    41398314 41518201 41578183 41808034 41557961 41157936
    40667941 39877965 39408067=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    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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    --- SBBSecho 3.28-Linux
    * Origin: Capitol City Online (1:2320/107)
  • From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Sunday, June 14, 2026 17:41:20
    ACUS11 KWNS 141741
    SWOMCD
    SPC MCD 141740 COR
    PAZ000-WVZ000-OHZ000-INZ000-141745-

    Mesoscale Discussion 1136
    NWS Storm Prediction Center Norman OK
    1240 PM CDT Sun Jun 14 2026

    Areas affected...far eastern Indiana...portions of Ohio...western Pennsylvania...northern West Virginia Panhandle

    Concerning...Severe potential...Watch likely=20

    Valid 141740Z - 141745Z

    CORRECTED FOR GRAPHIC

    Probability of Watch Issuance...80 percent

    SUMMARY...Thunderstorm activity along and ahead the cold front will
    continue to increase in coverage and intensity. Severe potential
    will increase into the afternoon.

    DISCUSSION...Thunderstorm activity ongoing along the cold front from
    central Indiana into western Ohio is increasing in coverage and
    intensity. Ahead of the front, filtered daytime heating has warmed
    temperatures in Ohio into the mid to upper 80s. This in combination
    with dew points in the upper 60s to 70s has yielded MLCAPE around
    500-1000 J/kg. Low-level lapse rates are also steepening, with
    around 7-7.5 C/km analyzed in SPC Mesoanalysis. Increasingly
    favorable thermodynamics in combination with deep layer shear around
    45-50 kts will support storm organization and severe potential
    downstream. Increasingly favorable low-level shear profiles into PA,
    where surface winds have more of a southeasterly component may
    support potential for line embedded circulations and perhaps a
    tornado. The main hazard will be damaging wind. A watch will will
    be needed soon to cover this potential severe risk.

    ..Thornton/Mosier.. 06/14/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9a0y3qjn3iY-nUA7w3YG8TasJzWpdtf9_n52MQ7sK1moi2XtMpHIZ8kEKbqzuRzhwuq4mFhdT= CBHynrFVGrk-uMy-mM$ for graphic product...

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

    LAT...LON 39408067 39038292 39248470 40018526 40788496 41318431
    41398314 41518201 41578183 41808034 41557961 41157936
    40667941 39877965 39408067=20

    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
    MOST PROBABLE PEAK WIND GUST...55-70 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

    --- SBBSecho 3.28-Linux
    * Origin: Capitol City Online (1:2320/107)