• MESO: Mesoscale Discussion 1535

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 14 01:16:33 2023
    ACUS11 KWNS 140116
    SWOMCD
    SPC MCD 140116=20
    NEZ000-140245-

    Mesoscale Discussion 1535
    NWS Storm Prediction Center Norman OK
    0816 PM CDT Thu Jul 13 2023

    Areas affected...Parts of western into central NE

    Concerning...Severe Thunderstorm Watch 484...

    Valid 140116Z - 140245Z

    The severe weather threat for Severe Thunderstorm Watch 484
    continues.

    SUMMARY...Some threat for hail and localized severe gusts may spread
    east of WW 484, but downstream watch issuance currently appears
    unlikely.

    DISCUSSION...Extensive convection is ongoing at 01 UTC across
    western NE, within an environment characterized by MLCAPE in excess
    of 1500 J/kg and effective shear of 40+ kt. However, convective mode
    has become rather messy, and storms have struggled to maintain
    severe intensity over the last hour or so. Given the favorable
    environment, some threat for isolated hail and/or severe gusts may
    continue in the short term, though with nocturnal cooling and
    increasing MLCINH (which is already rather large on the 00Z LBF
    sounding), a gradual weakening trend is expected with time.=20

    Some severe threat may spread east of WW 484, but unless there is an
    uptick in storm organization and intensity, downstream watch
    issuance appears unlikely at this time. Elevated convection could
    redevelop later tonight over portions of western NE with a localized
    severe threat, though this may remain isolated and largely occur
    after the 03 UTC expiration time of WW 484.

    ..Dean/Guyer.. 07/14/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5Bp7hDA_bRWrm9v4D1YyEk_uoaXZqRj9RqBGfoSCsIPlF5mycrxf09JnvvswDfdQ-MnUcob9D= TH0JL-yvxqZrwtHFRI$ for graphic product...

    ATTN...WFO...GID...LBF...GLD...

    LAT...LON 41260191 42510042 42669930 42109871 41439869 40969910
    40649978 40290156 40720198 41260191=20


    =3D =3D =3D
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