• MESO: Mesoscale Discussion 1545

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 14 18:02:42 2023
    ACUS11 KWNS 141802
    SWOMCD
    SPC MCD 141802=20
    NJZ000-PAZ000-MDZ000-DEZ000-VAZ000-DCZ000-WVZ000-142030-

    Mesoscale Discussion 1545
    NWS Storm Prediction Center Norman OK
    0102 PM CDT Fri Jul 14 2023

    Areas affected...Parts of the Mid-Atlantic

    Concerning...Severe potential...Watch unlikely=20

    Valid 141802Z - 142030Z

    Probability of Watch Issuance...20 percent

    SUMMARY...A few instances of marginally severe hail and damaging
    gusts are possible across parts of the Mid-Atlantic through the
    afternoon. A watch is not expected.

    DISCUSSION...Isolated to widely scattered thunderstorms are evolving
    eastward across parts of southern PA into eastern WV and western VA
    this afternoon -- where a 1-inch hail report occurred earlier.
    During the next few hours, this activity will generally
    spread/develop eastward across the Mid-Atlantic region, where a
    plume of diurnally steepening low-level lapse rates is developing.
    Given around 30 kt of effective shear and the increasingly unstable pre-convective environment, marginally severe hail and locally
    damaging gusts are possible with any stronger multicell clusters or
    transient supercells that develop. The overall severe threat should
    remain too isolated/sporadic for a watch.

    ..Weinman/Bunting.. 07/14/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_TLgr3jYPwTXsd_nlJZ3SplKlAtOAT2_UOuNLqXjN2jVdyykFPHCnEzUJ__nMtljjoXju5RAz= JEX30ThO-OZ62IezFM$ for graphic product...

    ATTN...WFO...OKX...PHI...BGM...AKQ...CTP...LWX...RNK...

    LAT...LON 39487880 40157821 40647748 41087677 41287623 41367572
    41357506 41087456 40717429 40247434 39647462 39087498
    38637528 37837584 37707591 37407649 37387808 37667905
    38187935 38657928 39487880=20


    =3D =3D =3D
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