• MESO: Mesoscale Discussion 0422

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, May 15, 2018 04:31:00
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    ACUS11 KWNS 150430
    SWOMCD
    SPC MCD 150430
    MOZ000-ARZ000-OKZ000-KSZ000-150600-

    Mesoscale Discussion 0422
    NWS Storm Prediction Center Norman OK
    1130 PM CDT Mon May 14 2018

    Areas affected...Southeast KS...Northeast OK...Southwest
    MO...Northwest AR

    Concerning...Severe potential...Watch unlikely

    Valid 150430Z - 150600Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Strong storms will propagate southeast with a threat for gusty/damaging winds and marginally severe hail.

    DISCUSSION...Multiple thunderstorm clusters have conglomerated into
    a larger complex of convection over southeast KS late this evening.
    Precip shield is expanding across this region and an MCS appears to
    be evolving along the KS/OK border. Veered LLJ across northeast OK
    into southwest KS suggests this activity should propagate toward
    northwest AR. Marginally severe hail and gusty/damaging winds should
    be the primary threat with this activity. Given the marginality and
    limited spatiotemporal nature to this complex, a watch is not
    expected at this time.

    ..Darrow/Hart.. 05/15/2018

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

    ATTN...WFO...SGF...TSA...ICT...

    LAT...LON 37459532 37069396 36139411 36069523 36639644 37459532



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tuesday, April 23, 2019 02:24:53
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    ACUS11 KWNS 230224
    SWOMCD
    SPC MCD 230224
    TXZ000-OKZ000-230400-

    Mesoscale Discussion 0422
    NWS Storm Prediction Center Norman OK
    0924 PM CDT Mon Apr 22 2019

    Areas affected...Texas South Plains...northwest Texas into
    southwestern Oklahoma

    Concerning...Severe Thunderstorm Watch 94...

    Valid 230224Z - 230400Z

    The severe weather threat for Severe Thunderstorm Watch 94
    continues.

    SUMMARY...Storms may continue to pose some risk for mostly
    marginally severe hail through late evening, while developing
    northeastward across the Texas South Plains, into southwestern
    Oklahoma. Severe wind potential appears low, but potential still
    exists for some increase in strong surface gusts by Midnight-1 AM
    CDT.

    DISCUSSION...Discrete thunderstorms have increased in number during
    the past few hours. MRMS-MESH suggests that strong cells may still
    be occasionally producing marginally severe hail, and this probably
    will continue at least another few hours in the presence of strong
    deep-layer shear and thermodynamic profiles characterized by steep
    mid-level lapse rates and weak to moderate CAPE.

    Activity remains generally focused along a thermal gradient in the
    850-700 mb layer, where it remains possible that forcing for ascent
    associated with warm advection, beneath broadly difluent and
    divergent upper flow, could support further upscale convective
    growth and consolidation through 04-06Z. If this occurs, a
    gradually conglomerating surface cold pool could be accompanied by
    some potential for strong, gusty surface winds. Otherwise, as
    southerly low-level flow remains generally weak, damaging wind
    potential appears generally low.

    ..Kerr.. 04/23/2019

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

    ATTN...WFO...OUN...SJT...LUB...MAF...

    LAT...LON 33620226 34849958 33999937 33499962 32810130 32640228
    33620226



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