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  • MESO: Mesoscale Discussion 1108

    From COD Weather Processor@1:2320/107 to wx-storm@lists.illinois.edu on Fri Jun 12 20:33:46 2026
    ACUS11 KWNS 122033
    SWOMCD
    SPC MCD 122033=20
    NYZ000-CTZ000-MAZ000-NJZ000-PAZ000-122200-

    Mesoscale Discussion 1108
    NWS Storm Prediction Center Norman OK
    0333 PM CDT Fri Jun 12 2026

    Areas affected...portions of the Mid-Atlantic into southern New
    England

    Concerning...Severe Thunderstorm Watch 322...

    Valid 122033Z - 122200Z

    The severe weather threat for Severe Thunderstorm Watch 322
    continues.

    SUMMARY...Isolated damaging wind gusts will remain possible for
    another couple of hours across Severe Thunderstorm Watch 322.

    DISCUSSION...Widely scattered thunderstorms are ongoing across
    portions of northeastern Pennsylvania into southeastern New York,
    with a dominant storm mode of multicell clusters. One of these
    clusters recently produced two reports of wind damage in Susquehanna
    County, PA. Latest objective analysis suggests that available
    buoyancy has increased to around 2000 J/kg MLCAPE with low-level
    lapse rates steepening to 7.5-8.0 C/km amid continued afternoon
    heating. Coupled with 25-30 kts of westerly mid-level flow sampled
    by the DIX/OKX VWPs, this will continue to support a risk for
    occasional damaging wind gusts with the ongoing multicell clusters.
    Convective intensity is then expected to gradually wane later this
    evening owing to nocturnal low-level cooling/stabilization.

    ..Chalmers.. 06/12/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6cFnHQ08IbMXF-KbZN9H7mWmUSjblcYGPqzEZVLhjuLsk-xRpr6HXFPbnZenmCwoUlvJN2ZIP= rTn-_PABt9qOMH0Y1g$ for graphic product...

    ATTN...WFO...BOX...OKX...ALY...PHI...BGM...

    LAT...LON 41927313 41747297 41597293 41387298 41117328 40867356
    40727381 40667410 40687447 40867507 41097547 41337563
    41587563 41877544 42137513 42297465 42207407 42117363
    41927313=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH


    =3D =3D =3D
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    * Origin: Capitol City Online (1:2320/107)