• MESO: Mesoscale Discussion 1063

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wed May 29 06:15:17 2024
    ACUS11 KWNS 290615
    SWOMCD
    SPC MCD 290614=20
    TXZ000-290745-

    Mesoscale Discussion 1063
    NWS Storm Prediction Center Norman OK
    0114 AM CDT Wed May 29 2024

    Areas affected...TX South Plains

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

    Valid 290614Z - 290745Z

    Probability of Watch Issuance...5 percent

    SUMMARY...A narrow swath of severe hail and wind may persist through
    about 3 AM CDT before likely weakening. A watch is not expected.

    DISCUSSION...Long-lived supercell that produced multiple golf-ball
    size hail reports in the past hour across Roosevelt County, NM has
    evolved into a supercell bowing structure in the South Plains west
    of Lubbock. CAM guidance has handled this particular area of
    convection quite poorly, with successive runs of the HRRR
    initializing and then immediately weakening the cell within the
    first hour. MRMS MESH values have recently diminished to around 2
    inches as the bowing structure evolved which suggests the potential
    for significant severe hail is diminishing. Despite the likely
    elevated character, a swath of severe wind gusts may occur until the
    cell finally subsides, which was recently confirmed by a 62 mph gust
    at the Morton West TX Mesonet site. This appears likely to occur as
    it shifts away from the instability axis over eastern NM and
    relatively weaker deep-layer shear with eastern extent per
    time-series comparison of area VWP data.

    ..Grams/Thompson.. 05/29/2024

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4ANB7IvWfpHlo7iLDeRPt3fxZ7S1pvnj3HRij4D4s7IFGK4n-NODlaibq5wwewkZ2y6cM7VsU= Jrw_675Toqc5KyJlxk$ for graphic product...

    ATTN...WFO...LUB...

    LAT...LON 34030273 33960224 33870165 33490122 33120127 33010155
    33060196 33310266 33820284 34030273=20


    =3D =3D =3D
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