• MESO: Mesoscale Discussion 1016

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon May 27 18:38:00 2024
    ACUS11 KWNS 271837
    SWOMCD
    SPC MCD 271837=20
    NCZ000-VAZ000-SCZ000-272000-

    Mesoscale Discussion 1016
    NWS Storm Prediction Center Norman OK
    0137 PM CDT Mon May 27 2024

    Areas affected...portions of northern South Carolina...eastern North Carolina...southeastern Virginia

    Concerning...Severe potential...Watch likely=20

    Valid 271837Z - 272000Z

    Probability of Watch Issuance...80 percent

    SUMMARY...The severe threat is increasing across portions of
    northeast SC into southeastern VA. Multicells, line segments, and
    supercells will likely develop this afternoon and pose a threat for
    large hail and damaging gusts. A tornado or two also cannot be ruled
    out. A WW issuance will likely be needed in the next hour or so.

    DISCUSSION...Strong diurnal heating is contributing to
    destabilization of the boundary layer, with surface temperatures
    rising into the 80s F amid upper 60s to low 70s F dewpoints,
    boosting MLCAPE over 2000 J/kg over many locales. As the 500 mb vort
    max over northern NC continues to progress east, and as MLCINH
    continues to erode, thunderstorms should develop in the next couple
    of hours, and increase in both coverage and intensity through the
    afternoon. A 35+ kt southwesterly low-level jet is overspreading the
    Carolinas, beneath a westerly 60+ kt 500 mb jet, contributing to
    modestly curved and elongated hodographs. As such, multicells, short
    line segments, and occasional supercells, will all be possible
    convective modes, accompanied by a large hail/damaging gust threat.
    Some forecast soundings show large enough low-level hodograph
    curvature to support an isolated tornado threat closer to the NC/VA coastline.=20

    Given the expected coverage of potential severe weather this
    afternoon, a WW issuance will likely be needed in the next hour or
    two.

    ..Squitieri/Guyer.. 05/27/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-bCjKI3LGt5Uqdr-JGmh-JCTTrnp-CiMoDizsQ8E2_ylhvg0TxeILrypY4HrbVuGUVObjOgC2= am2Qauv_9gHAY5H7iQ$ for graphic product...

    ATTN...WFO...AKQ...MHX...RAH...ILM...RNK...CHS...CAE...GSP...

    LAT...LON 33808109 35218011 36897880 37467706 37087627 36277594
    35437607 34677684 34007768 33707848 33127912 33808109=20


    =3D =3D =3D
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