• MESO: Mesoscale Discussion 1464

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jun 26 22:57:48 2025
    ACUS11 KWNS 262256
    SWOMCD
    SPC MCD 262255=20
    NJZ000-PAZ000-MDZ000-DEZ000-VAZ000-270030-

    Mesoscale Discussion 1464
    NWS Storm Prediction Center Norman OK
    0555 PM CDT Thu Jun 26 2025

    Areas affected...portions of southeastern Pennsylvania to the
    DelMarVa and southern New Jersey

    Concerning...Severe Thunderstorm Watch 464...

    Valid 262255Z - 270030Z

    The severe weather threat for Severe Thunderstorm Watch 464
    continues.

    SUMMARY...Damaging gusts will remain possible across the Mid
    Atlantic this evening.

    DISCUSSION...Across northeastern portions of WW464, a cluster of
    thunderstorms has gradually taken on a more linear appearance early
    this evening. The environment ahead of these storms is largely
    pristine with moderate to large buoyancy and modestly steep
    low-level lapse rates amid weak vertical shear. This will continue
    to support strong updrafts with this convection through the early
    evening hours. Additional storm development/intensification into a
    loose QLCS appears likely as storms propagate east/southeastward
    along a remnant coastal boundary. Locally greater forcing along this
    boundary, and a strengthening cold pool should allow for increased
    forward propagation of the entire linear cluster. This suggests a
    continued damaging gust threat is likely, particularly from southern
    NJ, to eastern MD/PA and DE this evening.

    ..Lyons.. 06/26/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-5Ko8QItWeMe85WV9DZokoLdQPmeI9mxMATCVUfBa25o8_VnOxj-5VELJW1LyRp7xsl4Cpvv_= 4FsIbhicmuv47txZl0$ for graphic product...

    ATTN...WFO...PHI...AKQ...CTP...LWX...

    LAT...LON 39667675 40077642 40337565 39927492 39507447 39067474
    37947534 38077621 38507651 38937679 39367685 39667675=20

    MOST PROBABLE PEAK WIND GUST...55-70 MPH


    =3D =3D =3D
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