• MESO: Mesoscale Discussion 0370

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, May 09, 2018 00:39:01
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    ACUS11 KWNS 090038
    SWOMCD
    SPC MCD 090038
    TXZ000-OKZ000-090215-

    Mesoscale Discussion 0370
    NWS Storm Prediction Center Norman OK
    0738 PM CDT Tue May 08 2018

    Areas affected...far southwest OK into northwest TX

    Concerning...Severe potential...Watch unlikely

    Valid 090038Z - 090215Z

    Probability of Watch Issuance...5 percent

    SUMMARY...A few strong wind gusts are possible this evening across
    the MCD area. The overall threat will remain marginal and limited in
    space/time and a watch is not expected.

    DISCUSSION...A band of thunderstorms has developed ahead of a
    southward sagging cold front across the TX Panhandle into far
    southwest OK. Based on 00z RAOBs from AMA and OUN, this high-based
    activity should remain fairly disorganized/weak due to a combination
    of weak effective shear, limited instability and capping. However,
    00z RAOBs also show an inverted-v sub-cloud layer thermodynamic
    profile. This well-mixed boundary layer with steep 0-3km lapse rates
    could support a few strong wind gusts this evening. Given the
    marginal and unorganized nature of the threat, a watch is not
    expected.

    ..Leitman/Hart.. 05/09/2018

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

    ATTN...WFO...FWD...OUN...SJT...LUB...AMA...MAF...

    LAT...LON 35129955 33979847 32989833 32459881 32119996 32280094
    32610170 33270210 33990214 34630205 34810206 34810127
    34830050 35129955



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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, April 17, 2019 22:11:39
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    ACUS11 KWNS 172211
    SWOMCD
    SPC MCD 172211
    MOZ000-KSZ000-NEZ000-172345-

    Mesoscale Discussion 0370
    NWS Storm Prediction Center Norman OK
    0511 PM CDT Wed Apr 17 2019

    Areas affected...Northeast Kansas and northwest Missouri

    Concerning...Severe potential...Watch likely

    Valid 172211Z - 172345Z

    Probability of Watch Issuance...95 percent

    SUMMARY...Storms have started to form along the cold front in
    northeast Kansas and northwest Missouri. These storms may be capable
    of large hail. A severe thunderstorm watch will be needed shortly.

    DISCUSSION...Low-level moisture advection and diabatic heating has
    destabilized the area ahead of the cold front over the past few
    hours. This has led to sufficient buoyancy for storm development
    along the cold front in northeast Kansas and northwest Missouri.
    Additionally a storm has developed in east central Kansas in the
    eastern portion of severe thunderstorm watch 76. Most convective
    allowing guidance suggests the primary area of strong storm
    development will be associated with additional development along the
    boundary where this initial storm has developed. Steep mid-level
    lapse rates (8.0 to 8.5 C/km per RAP mesoanalysis) and effective
    shear around 40 to 45 knots per TWX VWP will support a threat for
    large hail from these storms. A severe thunderstorm watch will be
    needed shortly.

    ..Bentley/Hart.. 04/17/2019

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

    ATTN...WFO...LSX...DVN...SGF...EAX...OAX...TOP...

    LAT...LON 39559619 40069557 40479472 40549429 40569330 40399208
    38829264 38509326 38089414 38739521 38989563 39279611
    39559619



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