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  • MESO: Mesoscale Discussion 0476

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, May 20, 2018 20:33:16
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    ACUS11 KWNS 202033
    SWOMCD
    SPC MCD 202032
    INZ000-KYZ000-TNZ000-ILZ000-MSZ000-MOZ000-ARZ000-202230-

    Mesoscale Discussion 0476
    NWS Storm Prediction Center Norman OK
    0332 PM CDT Sun May 20 2018

    Areas affected...Northeast Arkansas into the lower Ohio Valley

    Concerning...Severe Thunderstorm Watch 110...

    Valid 202032Z - 202230Z

    The severe weather threat for Severe Thunderstorm Watch 110
    continues.

    SUMMARY...Severe hail and wind remain possible across most of the
    watch area.

    DISCUSSION...Numerous storms persist across the area, both along the
    original outflow boundary and in clusters to the south in a strongly
    unstable air mass. Radar shows that many of the storms have
    remained cellular, the exception being across southern IL and into
    western KY where the boundary continues to move east.

    Given the amount of storms, much of the air mass will be overturned
    in the next few hours, which reduces the threat of any organized
    MCS/wind threat. Therefore, marginally severe hail and only
    localized damaging wind gusts are expected.

    ..Jewell/Weiss.. 05/20/2018

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

    ATTN...WFO...OHX...PAH...MEG...JAN...LSX...LZK...

    LAT...LON 34008851 34009136 37939019 37938725 34008851



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, April 30, 2019 02:35:46
    This is a multi-part message in MIME format...

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    ACUS11 KWNS 300235
    SWOMCD
    SPC MCD 300235
    TXZ000-NMZ000-300430-

    Mesoscale Discussion 0476
    NWS Storm Prediction Center Norman OK
    0935 PM CDT Mon Apr 29 2019

    Areas affected...West TX

    Concerning...Severe Thunderstorm Watch 110...

    Valid 300235Z - 300430Z

    The severe weather threat for Severe Thunderstorm Watch 110
    continues.

    SUMMARY...Thunderstorms may linger for the next few hours but
    overall severe threat appears to be waning.

    DISCUSSION...Earlier supercell activity that developed west of MAF
    has struggled to maintain intensity with loss of daytime heating.
    00z sounding from MAF exhibited substantial CAPE but a weak but
    notable cap near 700mb. Latest short-range guidance suggests capping
    will strengthen through 06z and this may prove detrimental to
    ongoing storms. Additionally, recent radar trends suggest capping is strengthening and overall severe threat appears to be decreasing.

    ..Darrow.. 04/30/2019

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

    ATTN...WFO...MAF...

    LAT...LON 31460265 31680401 32240383 31990249 31460265



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