• MESO: Mesoscale Discussion 1268

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, August 09, 2018 19:55:43
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    ACUS11 KWNS 091955
    SWOMCD
    SPC MCD 091955
    INZ000-ILZ000-WIZ000-092100-

    Mesoscale Discussion 1268
    NWS Storm Prediction Center Norman OK
    0255 PM CDT Thu Aug 09 2018

    Areas affected...Southern Wisconsin and northern Illinois

    Concerning...Severe potential...Watch unlikely

    Valid 091955Z - 092100Z

    Probability of Watch Issuance...20 percent

    SUMMARY...A band of storms developing across northern portions of
    the discussion area will pose an isolated hail/wind threat over the
    next several hours. A WW is not anticipated for this activity.

    DISCUSSION...A broken band of storms continues to develop along a
    front located from just north of Lone Rock, WI to Milwaukee, WI at
    this time. These storms are in a modestly sheared, yet strongly
    unstable environment characterized by 20-25 kts of deep shear and
    3000+ J/kg MUCAPE, respectively. Given the initial linear
    organization with these cells, some southward propagation of the
    activity is expected with time especially as cold pools mature
    beneath ongoing storms. High-resolution model guidance further
    supports this notion, with storms potentially reaching northeastern
    Illinois by the 22-23Z timeframe. A risk for isolated damaging wind
    gusts and hail will exist with the strongest activity, although this
    threat should remain isolated enough to preclude a Severe
    Thunderstorm Watch issuance.

    ..Cook.. 08/09/2018

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

    ATTN...WFO...LOT...MKX...DVN...ARX...

    LAT...LON 43449056 43619001 43408887 43048780 42438684 42168667
    41818681 41528765 41748873 42439015 42869065 43449056



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