• MESO: Mesoscale Discussion 1757

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed Sep 15 20:38:46 2021
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    ACUS11 KWNS 152038
    SPC MCD 152038=20 MEZ000-NHZ000-MAZ000-VTZ000-CTZ000-NYZ000-NJZ000-PAZ000-152145-

    Mesoscale Discussion 1757
    NWS Storm Prediction Center Norman OK
    0338 PM CDT Wed Sep 15 2021

    Areas affected...eastern PA/NY into New England

    Concerning...Severe Thunderstorm Watch 501...502...

    Valid 152038Z - 152145Z

    The severe weather threat for Severe Thunderstorm Watch 501, 502

    SUMMARY...The severe threat continues across WW 501 and WW 502.
    Damaging wind gusts will continue to be the primary hazard the next
    few hours.

    DISCUSSION...Several line segments/bows have developed ahead of the eastward-advancing cold front from eastern PA into ME. This activity
    is ongoing within a corridor of moderate instability/shear favorable
    for organized convection. Damaging wind gusts will continue to be
    the main hazard with this activity, though a few instances of
    near-severe hail have been observed. The severe threat will
    gradually diminish during the evening hours with loss of daytime
    heating as the boundary-layer decouples and becomes more stable.

    ..Leitman.. 09/15/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!vvSNrmmTVHK6L9NGVhYU_LZFzrGZDIUubBgALQZmnS92bAhGMPc-wm1oRn7dB2m1h_ferWW3$=
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    LAT...LON 45326838 44426889 43357053 42477231 40817569 40037687
    39947750 40047810 40307852 40767823 41337707 43017376
    45167003 45516915 45546864 45326838=20

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