• MESO: Mesoscale Discussion 1199

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, July 29, 2018 23:23:59
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 292323
    SWOMCD
    SPC MCD 292323
    NEZ000-KSZ000-COZ000-SDZ000-WYZ000-300030-

    Mesoscale Discussion 1199
    NWS Storm Prediction Center Norman OK
    0623 PM CDT Sun Jul 29 2018

    Areas affected...southeastern Wyoming...eastern Colorado...western Nebraska...and far northwestern Kansas

    Concerning...Tornado Watch 322...

    Valid 292323Z - 300030Z

    The severe weather threat for Tornado Watch 322 continues.

    SUMMARY...The severe threat continues across WW 322.

    DISCUSSION...Southeastward-moving thunderstorms continue to migrate
    across WW 322 at this time. Favorable shear/buoyancy profiles have
    supported occasional tornado and very large hail reports -
    especially with a cluster of supercells migrating across
    northeastern Colorado. Over the past hour or so, one dominant high-precipitation supercell has evolved over Morgan and Washington
    Counties and an expansive cold pool has spread northwest from this
    storm across much of Weld County and vicinity. This may signal the
    beginning of upscale growth advertised by the past several runs of
    high-res models.

    Upstream (in southeastern Wyoming), cellular storms may continue to
    pose a threat for very large hail and a tornado or two given
    favorable shear profiles and storm mode. Eventually, ongoing storms
    will move top the remnant cold pool across northeastern Colorado,
    which may lessen the overall tornado threat but still support large
    hail in the strongest cores.

    Farther south, convection near/west of Pueblo, CO has exhibited
    brief supercellular characteristics and necessitated a spatial
    expansion of the WW. Hail, damaging wind gusts, and tornadoes may
    evolve from any dominant storm that can materialize in this region.

    ..Cook.. 07/29/2018

    ...Please see www.spc.noaa.gov for graphic product...

    ATTN...WFO...LBF...DDC...UNR...GLD...PUB...BOU...CYS...RIW...

    LAT...LON 43420632 43540561 43510433 43030318 41970228 40860186
    39760147 38570158 38260164 38040218 37650308 37570419
    37830505 38250538 38850533 39700513 40470542 41020617
    41940652 42850659 43420632



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