• MESO: Mesoscale Discussion 0845

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jun 3 20:48:04 2021
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    ACUS11 KWNS 032047
    SPC MCD 032047=20

    Mesoscale Discussion 0845
    NWS Storm Prediction Center Norman OK
    0347 PM CDT Thu Jun 03 2021

    Areas affected...the Mid Atlantic region

    Concerning...Severe Thunderstorm Watch 234...

    Valid 032047Z - 032215Z

    The severe weather threat for Severe Thunderstorm Watch 234

    SUMMARY...Scattered strong/isolated severe storms continue from
    southeastern Pennsylvania southwestward into central Virginia, where
    locally damaging wind gusts remain the primary risk.

    DISCUSSION...Latest radar loop shows a broken band of storms that
    continues to evolve along and east of the higher terrain of Pennsylvania/Maryland/Virginia. Diurnal heating combined with the
    relatively moist (generally mid to upper 60s dewpoints)
    boundary-layer airmass across the area has pushed mixed-layer CAPE
    values into the 1000 to 1500 J/kg range. Coupled with
    increasing/weakly veering flow with height which is aiding updraft organization, isolated severe storms have evolved, a few exhibiting
    supercell characteristics. While marginally severe hail is
    possible, greater risk is for locally damaging wind gusts --
    particularly as storms grow upscale/congeal. Meanwhile, an
    isolated/brief tornado cannot be ruled out over the next 1-2 hours.

    ..Goss.. 06/03/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!svYJZ1QzpcGvpoyLFRSWKY8AHJngA9zXGvinWedC3UXG_usT4UY1olV8DMyC65Lt-SW8E17v$=
    for graphic product...


    LAT...LON 37477908 39477769 40787530 40667449 38127599 37447826

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