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  • MESO: Mesoscale Discussion 1876

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Aug 7 12:19:19 2023
    ACUS11 KWNS 071219
    SWOMCD
    SPC MCD 071218=20 PAZ000-MDZ000-DCZ000-VAZ000-WVZ000-NCZ000-TNZ000-KYZ000-071415-

    Mesoscale Discussion 1876
    NWS Storm Prediction Center Norman OK
    0718 AM CDT Mon Aug 07 2023

    Areas affected...Northeast Tennessee...Northwest North
    Carolina...Western Virginia...South/East West Virginia...Maryland
    and Southern Pennsylvania

    Concerning...Outlook upgrade=20

    Valid 071218Z - 071415Z

    SUMMARY...An upgrade to Moderate Risk will take place at the 13Z Day
    1 Outlook update. The Moderate Risk will include areas in northeast
    Tennessee, northwest North Carolina, western Virginia,
    southern/eastern West Virginia, Maryland and southern Pennsylvania.
    Widespread damaging winds are expected, with localized gusts above
    65 knots possible.

    DISCUSSION...An upper-level trough will move through the Ohio and
    Tennessee Valleys today, with a moist airmass ahead of the system
    becoming moderately unstable. Thunderstorms will develop by late
    morning along a surface trough associated with the upper-level
    system. Supercell development will be likely around midday with a
    few tornadoes possible. A transition to a squall line is expected to
    take place during the afternoon. This squall line will move quickly
    eastward across the southern and central Appalachians. Widespread
    damaging winds are expected along the leading edge of the squall
    line, with localized gusts above 65 knots possible.

    ..Broyles/Grams.. 08/07/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6xgj6PcOVXdDQWPvl-cH0WomJ9zz8wjZ6X7IFQf3D6wekH_JnXrXB-6pGn_1EsUQu_dB_7aPB= _J2Ap3UslAlbzCeUvU$ for graphic product...

    ATTN...WFO...PHI...AKQ...CTP...LWX...RNK...PBZ...RLX...GSP...
    MRX...JKL...

    LAT...LON 36048135 35978240 35998284 36048323 36118359 36218382
    36308389 36478394 36708388 37168342 37838252 39307916
    40027763 40157677 40077628 39817597 39427605 38797655
    37527837 36607975 36048135=20


    =3D =3D =3D
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