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  • MESO: Mesoscale Discussion 0844

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Saturday, June 23, 2018 22:14:54
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 232214
    SWOMCD
    SPC MCD 232214
    NEZ000-SDZ000-WYZ000-232315-

    Mesoscale Discussion 0844
    NWS Storm Prediction Center Norman OK
    0514 PM CDT Sat Jun 23 2018

    Areas affected...Central/eastern Wyoming...western Nebraska...and
    southwestern South Dakota

    Concerning...Severe potential...Watch unlikely

    Valid 232214Z - 232315Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Scattered storms continue to migrate eastward across the
    discussion area and will pose a threat for occasional, isolated hail
    and damaging wind gusts through sunset. A WW issuance is not
    anticipated.

    DISCUSSION...Scattered strong to occasionally severe thunderstorms
    continue to migrate/propagate eastward across Wyoming this
    afternoon. These storms are in a weakly unstable environment
    (500-1000 J/kg SBCAPE), with 30-45 kt deep shear profiles and steep
    low- to mid-level lapse rates supporting occasional, yet isolated
    severe hail and wind in the most intense cells. Large-scale lift
    associated with an upstream wave over the northern Rockies is also
    enhancing storm coverage and should continue to do so through the
    evening before low-level stabilization lowers the overall severe
    threat. Some upscale growth into linear segments may occur in
    southeastern Wyoming and western Nebraska overnight, resulting in a
    lingering severe threat in these areas. The overall magnitude of
    the threat should preclude any WW issuance, however.

    ..Cook/Grams.. 06/23/2018

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

    ATTN...WFO...LBF...UNR...CYS...RIW...

    LAT...LON 43700892 44040809 44120667 44100450 43870300 43450227
    42560189 41690208 41290291 41440449 41500525 41570652
    41600766 41910864 42600912 43120916 43700892



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