• MESO: Mesoscale Discussion 1240

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, August 06, 2018 01:16:57
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    ACUS11 KWNS 060116
    SWOMCD
    SPC MCD 060116
    NEZ000-KSZ000-060315-

    Mesoscale Discussion 1240
    NWS Storm Prediction Center Norman OK
    0816 PM CDT Sun Aug 05 2018

    Areas affected...Northwest/west-central KS....South-central NE

    Concerning...Severe potential...Watch unlikely

    Valid 060116Z - 060315Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Strong wind gusts are possible downstream of the
    convective line moving through northwest KS. Additional storms
    capable of hail are possible across north-central KS and adjacent
    south-central NE.

    DISCUSSION...Initially disorganized cluster of thunderstorms over
    far east-central CO has recently shown a trend toward cold pool
    amalgamation and a more organized linear structure. Recent imagery
    from KGLD confirms this with indications that strong wind gusts are
    probable as this line moves east-southeastward into the well-mixed
    airmass across west-central KS. The more favorable thermodynamic is
    a bit farther north and the general expectation is for the ongoing
    line of storms to begin dissipating as it encounters the drier
    airmass across central KS. However, before that occurs some very
    strong gusts are possible. The severe threat is expected to remain
    too spatial limited to merit a watch, although convective trends
    will be monitored closely.

    A strengthening low-level jet may result in additional storm
    development along and north of the surface boundary extending from
    west-central KS northeastward into southern IA. In this area,
    vertical shear is a bit stronger and the overall thermodynamics are
    more favorable (i.e. 100 mb mean mixing ratios near 14 g/kg and
    MUCAPE over 3000 J/kg). As such, strong updrafts capable of severe
    hail are possible. Uncertainty regarding coverage merits low watch probabilities at this point but trends are being watched closely.

    ..Mosier/Hart.. 08/06/2018

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

    ATTN...WFO...GID...DDC...GLD...

    LAT...LON 38370121 38600196 39690177 40419905 38949913 38339995
    38370121



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