• MESO: Mesoscale Discussion 0379

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, May 10, 2018 23:10:40
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    ACUS11 KWNS 102310
    SWOMCD
    SPC MCD 102310
    NEZ000-SDZ000-COZ000-110115-

    Mesoscale Discussion 0379
    NWS Storm Prediction Center Norman OK
    0610 PM CDT Thu May 10 2018

    Areas affected...Western/Central Nebraska

    Concerning...Severe Thunderstorm Watch 79...

    Valid 102310Z - 110115Z

    The severe weather threat for Severe Thunderstorm Watch 79
    continues.

    SUMMARY...Scattered thunderstorms continue to pose a threat for
    large hail and damaging winds, with upscale growth to a linear
    convective system expected over time.

    DISCUSSION...Scattered thunderstorms have developed across the watch
    area and continue to intensify as they move into richer low level
    moisture across portions of western/central NE. MLCAPE of 1500-2000
    J/kg and effective bulk shear 40-50 kt will help to sustain the
    ongoing supercell structures across the area, posing mainly a large
    hail and damaging wind threat. The more isolated storms,
    particularly across northwestern/north-central NE, may pose an
    isolated tornado threat, as low-level winds are now backing within
    the decoupling boundary-layer resulting in an increase in low-level
    shear. With time, the scattered storms should begin to merge over
    the next few hours, with the primary threat transitioning to
    damaging winds into central portions of NE.

    ..Karstens.. 05/10/2018

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

    ATTN...WFO...GID...LBF...UNR...GLD...BOU...CYS...

    LAT...LON 40420222 41220288 42220312 43040241 43020074 42689968
    40789951 40160015 40150154 40420222



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, April 18, 2019 02:52:41
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    ACUS11 KWNS 180252
    SWOMCD
    SPC MCD 180252
    MOZ000-OKZ000-KSZ000-180415-

    Mesoscale Discussion 0379
    NWS Storm Prediction Center Norman OK
    0952 PM CDT Wed Apr 17 2019

    Areas affected...Northern Oklahoma and southeast Kansas

    Concerning...Severe Thunderstorm Watch 76...

    Valid 180252Z - 180415Z

    The severe weather threat for Severe Thunderstorm Watch 76
    continues.

    SUMMARY...The large hail and damaging wind threat continues across
    severe thunderstorm watch 76. The area with the greatest threat for
    damaging winds will be in northeast Oklahoma and southeast Kansas.
    Local watch extensions or a downstream watch may be needed.

    DISCUSSION...Storms continue across two areas within severe
    thunderstorm watch 76. The storms along the stationary front
    continue to be primarily hail producers while the line of storms
    along I-35 in Oklahoma have formed into a bowing segment with
    primarily a damaging wind threat. Expect the primary threat to be
    the bowing line of storms. Recently the Blackwell, OK mesonet site
    reported a wind gust of 62 mph. As this line continues to mature,
    expect wind speeds to continue to increase with the possibility for
    some winds in excess of 70 mph. Expect this line of storms to
    maintain severe intensity into far eastern Oklahoma and southeastern
    Kansas, but there is considerable uncertainty whether the line will
    be severe when it moves into a less unstable environment in
    Missouri. Therefore, trends will need to continue to be monitored
    for a downstream watch.

    ..Bentley/Hart.. 04/18/2019

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

    ATTN...WFO...SGF...EAX...TSA...TOP...ICT...OUN...

    LAT...LON 36949777 37329729 38019612 38519533 38179419 36979404
    36629451 35809589 35289703 35219777 35239828 36319774
    36949777



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