• MESO: Mesoscale Discussion 1674

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Jul 17 23:12:29 2024
    ACUS11 KWNS 172312
    SWOMCD
    SPC MCD 172311=20 MAZ000-MEZ000-NHZ000-RIZ000-CTZ000-NYZ000-NJZ000-PAZ000-DEZ000-MDZ000-18011=
    5-

    Mesoscale Discussion 1674
    NWS Storm Prediction Center Norman OK
    0611 PM CDT Wed Jul 17 2024

    Areas affected...Portions of southern New England and the
    Mid-Atlantic

    Concerning...Severe Thunderstorm Watch 552...

    Valid 172311Z - 180115Z

    The severe weather threat for Severe Thunderstorm Watch 552
    continues.

    SUMMARY...A severe threat of damaging winds, and perhaps marginally
    severe hail, will continue across portions of southern New England
    and the Mid-Atlantic over the next 2-3 hours. Local watch extensions
    in time appear likely.

    DISCUSSION...Latest radar trends indicate two areas of damaging wind
    concerns across northern MA, and southward into far eastern PA. A
    small bowing segment, and a cluster of relatively robust updrafts
    are present within these regions. Although MLCIN should slowly begin
    to increase with the approach of sunset, surface observations across
    NJ ahead of the cluster suggest an undisturbed, buoyant air mass
    remains in place. Temperatures in the upper 80s to low 90s, along
    with dewpoints in the low 70s, is contributing to MLCAPE ~1000-1500
    J/kg. Cell mergers occurring through this evening will have the
    opportunity to produce severe wind gusts with deepening cold pools.
    This may especially be true across portions of southern NJ where
    slightly stronger low-level flow exists. A bowing segment or two
    will also remain possible here. A local extension in time will
    likely be needed for portions of the watch.

    ..Barnes.. 07/17/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!48J-4PqWKfeaslkiyqftre2PyyErL1jniGJEUQgy24dBpyDu_ec0Yi6EJ81U7-VzsBVRj6XAw= VjAkiN_NsxC2LYmimo$ for graphic product...

    ATTN...WFO...GYX...BOX...OKX...ALY...PHI...BGM...CTP...LWX...

    LAT...LON 43357027 43367115 42827199 42227242 42117317 41857410
    41597484 40987583 40257668 39927677 39677645 39657416
    40857293 41017202 41457128 41727056 42407076 42927068
    43357027=20


    =3D =3D =3D
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