• MESO: Mesoscale Discussion 1477

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Fri Jul 3 22:31:44 2026
    ACUS11 KWNS 032231
    SWOMCD
    SPC MCD 032231=20
    NYZ000-CTZ000-NJZ000-PAZ000-040030-

    Mesoscale Discussion 1477
    NWS Storm Prediction Center Norman OK
    0531 PM CDT Fri Jul 03 2026

    Areas affected...Eastern Pennsylvania...southern New York...and
    northern New Jersey

    Concerning...Severe Thunderstorm Watch 448...

    Valid 032231Z - 040030Z

    The severe weather threat for Severe Thunderstorm Watch 448
    continues.

    SUMMARY...The potential for severe winds is increasing across
    eastern Pennsylvania, southern New York (including the New York City
    metro), and northern New Jersey as storms approach the coast.

    DISCUSSION...Latest radar imagery from KBGM and KDIX depict an
    initially broken band of thunderstorms beginning to show the early
    signs of cold pool amalgamation and upscale growth. Concurrently,
    increasing MRMS VIL values and cooling cloud-top temperatures have
    been observed over the past hour, further hinting that organization/intensification is occurring. More recently, a 75 mph
    gust was observed at Scranton, PA.=20

    Regional VWPs from central NY have been sampling fairly strong
    (40-50 knot) mid-level winds that are supporting stronger deep-layer
    wind shear than depicted by recent RAP mesoanalyses, and is likely
    promoting the recent intensification trend. Consequently, given the
    development of a deeper/more cohesive cold pool and strong
    deep-layer shear in proximity to ongoing convection, it seems likely
    that the potential for severe winds (most likely 55-75 mph) will
    persist downstream for the next couple of hours as storms approach
    the coast. Based on latest storm tracks, this band should reach the
    NY/NJ coast within the next 2-3 hours.

    ..Moore.. 07/03/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5hKJzHTLh-CNGfxsQhoG3Fb_uZfzjFUF9BlbTGhu4oN4kkYqEZnasQTKRn7Zf6L6lPl9UeFYb= JP2xuRQvN6av3VJAag$ for graphic product...

    ATTN...WFO...OKX...PHI...BGM...CTP...

    LAT...LON 40917669 40977631 41217577 41437542 41577506 41607470
    41047342 40817325 40587338 40497372 40307393 40147399
    40037408 39977446 40017511 40127561 40357613 40587672
    40737687 40917669=20

    MOST PROBABLE PEAK WIND GUST...65-80 MPH


    =3D =3D =3D
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    * Origin: Capitol City Weather Station (1:2320/127)