• MESO: Mesoscale Discussion 1176

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Friday, July 27, 2018 20:52:51
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    ACUS11 KWNS 272052
    SWOMCD
    SPC MCD 272052
    KSZ000-NEZ000-COZ000-272215-

    Mesoscale Discussion 1176
    NWS Storm Prediction Center Norman OK
    0352 PM CDT Fri Jul 27 2018

    Areas affected...Portions of eastern Colorado...western Kansas...and
    far southwest Nebraska

    Concerning...Tornado Watch 315...

    Valid 272052Z - 272215Z

    The severe weather threat for Tornado Watch 315 continues.

    SUMMARY...Strong/severe storms will continue to build south into
    western Kansas, as well as east across Colorado, through this
    evening, with an attendant threat of severe winds, large hail, and a
    couple tornadoes. A new watch will eventually be needed south of
    ongoing Watch 315.

    DISCUSSION...In areas that have recovered following early-day
    outflow, two small bowing storms are progressing southeast around 40
    kt over far northeast CO/southwest NE/northwest KS this afternoon.
    Further strengthening and upscale growth (with embedded supercells)
    is probable through late afternoon, given movement into a more
    buoyant low-level air mass. Multiple severe wind gusts and large
    hail would be the primary threats with these cells. To the west,
    further development may occur on both an outflow boundary over
    northeast Colorado and with convection building east from higher
    terrain into strengthening south/southeasterly low-level flow this
    evening. In addition to the wind and hail threat with these cells,
    elongating hodographs may support a couple tornadoes in any embedded supercells, primarily over western Kansas. The southeastward
    development of the entire severe threat will eventually require a
    new watch south of Watch 315.

    ..Picca.. 07/27/2018

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

    ATTN...WFO...DDC...GLD...PUB...BOU...

    LAT...LON 38480528 39780416 39990346 40390243 40120076 39389990
    37649974 37370012 37440082 37380335 37660508 38480528



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