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  • MESO: Mesoscale Discussion 1087

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, July 19, 2018 19:43:46
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    ACUS11 KWNS 191943
    SWOMCD
    SPC MCD 191943
    MOZ000-KSZ000-192115-

    Mesoscale Discussion 1087
    NWS Storm Prediction Center Norman OK
    0243 PM CDT Thu Jul 19 2018

    Areas affected...Portions of northeast Kansas into western Missouri

    Concerning...Severe Thunderstorm Watch 283...284...

    Valid 191943Z - 192115Z

    The severe weather threat for Severe Thunderstorm Watch 283, 284
    continues.

    SUMMARY...A corridor of damaging winds will remain possible near
    I-70 from Topeka eastward this afternoon. These storms are expected
    to reach western portions of the KC metro around 4pm.

    DISCUSSION...A cluster of severe thunderstorms, capable of damaging
    winds at times approaching 75+ mph, is progressing east around 45
    mph along the I-70 corridor this afternoon. Ahead of this cluster,
    visible satellite illustrates towering cumulus, suggesting a
    sufficiently unstable downstream environment. This is supported by
    the 18Z TOP sounding, which sampled steep low/mid-level lapse rates
    and ample northwesterly 700-500mb flow. Furthermore, dry air beneath
    500mb will enhance evaporative cooling within downdrafts already
    augmented by the aforementioned strong flow. All of these factors
    will likely maintain a threat of severe wind gusts (some possibly
    75+ mph) reaching the KC metro (especially western portions) around
    4pm.

    ..Picca.. 07/19/2018

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

    ATTN...WFO...EAX...TOP...ICT...

    LAT...LON 39559684 39629493 39439459 38969444 38359454 38289513
    38539656 38899710 39239712 39559684



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