• MESO: Mesoscale Discussion 0384

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Friday, May 11, 2018 04:17:40
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    ACUS11 KWNS 110417
    SWOMCD
    SPC MCD 110416
    NEZ000-110545-

    Mesoscale Discussion 0384
    NWS Storm Prediction Center Norman OK
    1116 PM CDT Thu May 10 2018

    Areas affected...Nebraska

    Concerning...Severe Thunderstorm Watch 81...

    Valid 110416Z - 110545Z

    The severe weather threat for Severe Thunderstorm Watch 81
    continues.

    SUMMARY...Severe risk will spread across southern/eastern portions
    of ww81.

    DISCUSSION...MCS has evolved over central NE tonight along the nose
    of LLJ that is expected to veer after midnight. Convection has
    gradually organized as it spread off the higher Plains region and
    becomes more focused along a corridor of enhanced low-level warm
    advection. While the majority of this activity is likely rooted
    above the boundary layer, flanking updrafts across Dawson/Lincoln
    Counties appears to be ingesting more buoyant parcels. Severe wind
    gusts have been reported on latest surface observations from
    KBBW/KVTN and there is some concern this may continue for the next
    few hours along/just north of wind shift. Hail may also accompany
    this activity as it spreads across eastern/southern portions of
    ww81.

    ..Darrow.. 05/11/2018

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

    ATTN...WFO...OAX...GID...LBF...

    LAT...LON 41010200 41270009 42239932 42649834 41469761 40499824
    40480174 41010200



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, April 18, 2019 07:17:10
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    ACUS11 KWNS 180717
    SWOMCD
    SPC MCD 180716
    ILZ000-MOZ000-180915-

    Mesoscale Discussion 0384
    NWS Storm Prediction Center Norman OK
    0216 AM CDT Thu Apr 18 2019

    Areas affected...portions of east-central Missouri into parts of
    southern Illinois

    Concerning...Severe potential...Watch unlikely

    Valid 180716Z - 180915Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Limited/local severe risk may continue for a few hours,
    though WW is not anticipated downstream from WW 80.

    DISCUSSION...Latest radar loop shows a weakening band of storms
    moving quickly eastward across southwest/south-central Missouri,
    with the storms likely to be slightly elevated above a weakly stable
    boundary layer -- per 06Z SGF special RAOB, and subsequent, slight
    downward trends in surface temperatures/dewpoints across the area.
    While gusty winds will remain possible as long as the band retains
    any semblance of organization, risk for winds in excess of severe
    levels should continue to gradually diminish.

    Farther east into portions of southern Missouri, a cluster of
    elevated/locally stronger storms is ongoing. While occasional,
    stronger storm pulses have been capable of producing hail near
    severe levels per WDSS MESH data, the limited degree of instability
    should continue to temper large hail risk. As such, a new WW --
    downstream of WW 80 over southwest Missouri -- is not anticipated.

    ..Goss/Edwards.. 04/18/2019

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

    ATTN...WFO...PAH...ILX...LSX...SGF...

    LAT...LON 38259274 39179166 39629023 39488799 38258856 37169247
    38259274



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