• MESO: Mesoscale Discussion 1481

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jun 29 22:39:13 2024
    ACUS11 KWNS 292239
    SWOMCD
    SPC MCD 292238=20
    NJZ000-NYZ000-PAZ000-DEZ000-MDZ000-300015-

    Mesoscale Discussion 1481
    NWS Storm Prediction Center Norman OK
    0538 PM CDT Sat Jun 29 2024

    Areas affected...Southeast PA...NJ...far northern MD/DE

    Concerning...Severe Thunderstorm Watch 484...

    Valid 292238Z - 300015Z

    The severe weather threat for Severe Thunderstorm Watch 484
    continues.

    SUMMARY...Strong to localized severe wind gusts from 50-65 mph will
    remain possible, mainly focused across southeast Pennsylvania and
    adjacent states. How far downstream this extends east of the
    Delaware Valley is uncertain, with forecast expectation of weakening
    farther east into New Jersey.

    DISCUSSION...A surging accelerated portion of a short-line segment
    has bowed across a part of east-central to southeast Pennsylvania.
    Its current eastward track will result in movement into a more
    weakly unstable air mass. But given its organization, a damaging
    wind threat will probably spread east of WW 484 into NJ before
    diminishing. Meanwhile, supercell structure exists within the
    tail-end robust updraft in south-central PA. With a plume of low 90s
    surface temperatures emanating north over central MD, it is
    plausible the lagging portion of the convective line may undergo a
    similar acceleration and bowing surge. This could potentially impact
    parts of far northern MD/DE, adjacent to WWs 482/484.

    ..Grams.. 06/29/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!852JWIXqEDpS6LjK9qFhEDoje5H3xB_rGhoII8kylSTS_6xnOhb_78v5a0dc3y4W_b_KKRaRC= xckfuYa8zYLQnNvoeg$ for graphic product...

    ATTN...WFO...OKX...PHI...CTP...LWX...

    LAT...LON 40767627 40817526 40707448 40637413 40057407 39677546
    39507641 39647702 40067726 40767627=20


    =3D =3D =3D
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