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  • MESO: Mesoscale Discussion 1408

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, September 02, 2018 02:39:49
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    ACUS11 KWNS 020239
    SWOMCD
    SPC MCD 020239
    MOZ000-IAZ000-NEZ000-KSZ000-020415-

    Mesoscale Discussion 1408
    NWS Storm Prediction Center Norman OK
    0939 PM CDT Sat Sep 01 2018

    Areas affected...Southeast NE

    Concerning...Severe Thunderstorm Watch 363...

    Valid 020239Z - 020415Z

    The severe weather threat for Severe Thunderstorm Watch 363
    continues.

    SUMMARY...Damaging winds and large hail remain a severe weather
    threat across the southeast Nebraska portion of WW 363. The storms
    located generally west and southwest of Saline and Jefferson
    Counties, NE should continue to diminish in intensity, as the
    stronger storms advance toward southwest Iowa. The western half or
    western two thirds of WW 363 will likely be canceled early.

    DISCUSSION...Long-lived cluster of storms, with a history of
    producing severe wind gusts, is now moving into the far eastern
    portion of WW 363 in southeast NE where storms have already occurred
    or are ongoing, though the environment remains very unstable.
    Effective bulk shear vectors oriented parallel to the surface
    boundary extending through southeast NE and then east across
    southern IA continue to favor bowing line segments. The favorable
    CAPE/shear parameter space will support damaging winds and large
    hail across the eastern third of WW 363. The recent tracks of the
    Lancaster, Otoe, Johnson to Saline cluster of storms indicated these
    storms should exit WW 363 into WW 364 between 03-0330Z, allowing the
    former watch to expire as scheduled or a little early.

    ..Peters.. 09/02/2018

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

    ATTN...WFO...EAX...OAX...TOP...ICT...GID...DDC...

    LAT...LON 38759974 40299861 41359665 41369592 40039544 39989618
    39649630 39569731 39309735 39309786 38879794 38849844
    38739850 38709932 38759974



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